Dodge - Dakota 4wd - Workshop Manual - 2002 - 2002

Engine Cooling Dakota, 2001-2005 Removal & Installation Print 1. Disconnect the negative battery cable. CAUTION Never open, service or drain the radiator or cooling system when hot; serious burns can occur from the steam and hot coolant. 2. Drain the engine coolant below the level of the thermostat housing or intake manifold. 3. Remove the air cleaner assembly if necessary for access to the sensor. 4. Remove the connector from the sensor. Vehicles with air conditioning may benefit if you fabricate an L-shaped hook tool from a wire coat hanger about 8 in. long. Use the hook for removal rather than pulling on the wiring harness. 5. Remove the sensor from the intake manifold. To install: 1. Install the sensor in the manifold and tighten to 8 ft. lbs. (11 Nm). 2. Install the connector on the sensor. There is no polarity: the connector cannot be accidentally reversed. 3. Connect the negative battery cable. 4. Inspect for leaks. 5. Install the engine cover. Back to Top Engine Electrical Dakota, 2001-2005 Alternator Diagnosis & Testing Print NOTE Before testing, make sure all connections and mounting bolts are clean and tight. Many charging system problems are related to loose and corroded terminals or bad grounds. Don-t overlook the engine ground connection to the body. On some vehicles, it is beneficial to add an additional ground between the engine and the chassis. This may solve many intermittent problems. NOTE Alternators must be replaced if defective in any way. No internal service is possible. Alternator Isolation Test On some models, it is possible to isolate the alternator from the regulator by grounding the field terminal. Grounding the field terminal removes the EVR from the circuit and forces full alternator output. This may help determine whether the problem is the alternator or EVR. NOTE Most alternators have two field terminals, one positive and one negative. With the engine running, the positive terminal will have battery voltage present and the negative terminal will have 3-5 volts less. Use a voltmeter to identify the negative terminal before carrying out the following test. WARNING Do not let the voltage get higher than 18 volts. Damage to electrical circuits may occur. 1. Connect a voltmeter across the battery terminals so the voltage can be monitored. 2. Start the engine and let it reach normal operating temperature. 3. Connect a jumper lead to a good ground. 4. Locate the field terminal (negative) on the back of the alternator. 5. Momentarily connect the grounded jumper to the field terminal. If the alternator is okay, the voltage will climb rapidly. Disconnect the jumper before the output reaches 18 volts. If the voltage does not rise, replace the alternator. If the voltage rises, the regulator circuits are bad. Voltage Drop Test NOTE Before proceeding, make sure the battery is in good condition and fully charged. Perform a voltage drop test of the positive side of the circuit as follows: 1. Start the engine and allow it to reach normal operating temperature. 2. Turn the headlamps, heater blower motor and interior lights ON. 3. Bring the engine to about 2,500 rpm and hold it there. 4. Connect the negative voltmeter lead directly to the battery positive terminal. 5. Touch the positive voltmeter lead directly to the alternator B+ output stud, not the nut. The meter should read no higher than about 0.5 volts. If it does, there is higher than normal resistance between the positive side of the battery and the B+ output at the alternator. 6. Move the positive meter lead to the nut and see if the voltage reading drops substantially. If it does, there is resistance between the stud and the nut. The theory is to keep moving closer to the battery terminal, one connection at a time, in order to find the area of high resistance (bad connection). Perform a voltage drop test of the negative side of the circuit as follows: 1. Start the engine and allow it to reach normal operating temperature. 2. Turn the headlamps, heater blower motor and interior lights ON. 3. Bring the engine to about 2,500 rpm and hold it there. 4. Connect the negative voltmeter lead directly to the negative battery terminal. 5. Touch the positive voltmeter lead directly to the alternator case or ground connection. The meter should read no higher than about 0.3 volts. If it does, there is higher than normal resistance between the battery ground terminal and the alternator ground. 6. Move the positive meter lead to the alternator mounting bracket. If the voltage reading drops substantially, you know that there is a bad electrical connection between the alternator and mounting bracket. The theory is to keep moving closer to the battery terminal, one connection at a time, in order to find the area of high resistance (bad connection). Precautions To prevent damage to the on-board computer, alternator and regulator, the following precautionary measures must be taken when working with the electrical system. Wear safety glasses when working on or near the battery. Don-t wear a watch with a metal band when servicing the battery. Serious burns can result if the band completes the circuit between the positive battery terminal and ground. When installing a battery, make sure that the positive and negative cables are not reversed. Be absolutely sure of the polarity of a booster battery before making connections. Connect the cables positive to positive, and negative to negative. Connect positive cables first and then make the last connection to ground on the body of the booster vehicle, so that arcing cannot ignite hydrogen gas that may have accumulated near the battery. Even momentary connection of a booster battery with the polarity reversed will destroy the alternator. Disconnect both battery cables -negative first-before attempting to charge a battery. Never ground the alternator output cable. Be cautious when using metal tools around a battery to avoid creating a short circuit between the terminals. Never ground the field circuit between the alternator and regulator. Never attempt to polarize an alternator. Never operate the alternator with the battery disconnected. Do not short across or ground any alternator terminals. Do not apply full battery voltage to the field connector(s). Always disconnect the battery ground cable before disconnecting the alternator lead. Never subject the alternator to excessive heat or dampness. If you are steam cleaning the engine, cover the alternator. If arc welding is to be done on the car, disconnect the battery and alternator. Disconnect the wiring from the engine controller (PCM). This consists of 14-and 60-pin connectors on most models. Removal & Installation 2.5L, 3.9L & 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Accessory drive belt Alternator harness connectors Alternator 3. Installation is the reverse of removal. Observe the following torques: A. 2.5L engine: 41 ft. lbs. (56 Nm). B. 3.9L, 5.9L engines: 30 ft. lbs. (41 Nm). 3.7L & 4.7L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE There are 1 vertical and 2 horizontal bolts. Negative battery cable Accessory drive belt Alternator harness connectors Mounting bolts and alternator Fig. Alternator mounting-3.7L and 4.7L engines To install: 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Install the alternator and tighten the bolts to the following specifications: Vertical bolt and long horizontal bolt: 41 ft. lbs. (56 Nm) Short horizontal bolt: 55 ft. lbs. (74 Nm). 3. Install or connect the following: Alternator harness connectors Accessory drive belt Negative battery cable Back to Top Dakota, 2001-2005 Description & Operation The charging system incorporates the following major components: Alternator Alternator drive belt Electronic Voltage Regulator (EVR) circuitry in the PCM Battery Battery temperature sensor Ignition switch Print "Check Gauges" lamp Voltmeter (if fitted) Wiring harness and connections The charging system is basically a series circuit with the battery wired in parallel. After the engine is started and running, the alternator takes over as the source of power and the battery then becomes part of the load on the charging system. The alternator, which is driven by the belt, consists of a rotating coil of laminated wire called the rotor. Surrounding the rotor are more coils of laminated wire that remain stationary just inside the alternator case, the stator. When current is passed through the rotor via the slip rings and brushes, the rotor becomes a rotating magnet with, of course, a magnetic field. When a magnetic field passes through a conductor (the stator), alternating current (A/C) is generated. This A/C current is rectified, or turned into direct current (D/C), by the diodes located within the alternator. The voltage regulator circuitry controls the alternator-s field voltage by grounding one end of the field windings very rapidly. The frequency varies according to current demand. The more the field is grounded, the more voltage and current the alternator produces. Voltage regulation on these vehicles is located in the Powertrain Control Module (PCM). Voltage is maintained at about 13.5-15 volts. During high engine speeds and low current demands, the regulator will adjust the voltage of the alternator field to lower the alternator output voltage. Conversely, when the vehicle is idling and the current demands may be high, the regulator will increase the field voltage, increasing the output of the alternator designed to reduce fuel consumption and increase power. A major factor in determining alternator output is the battery temperature sensor whose input to the PCM is used to adjust field voltage. The charging system is turned on and off with the ignition switch. The system is on when the engine is running and the ASD relay is energized. When the ASD relay is on, the PCM supplies voltage to the alternator field coil. The amount of current produced by the alternator is controlled by the EVR field control circuitry in the PCM. A battery temperature sensor, located in the battery tray housing, monitors battery condition. This information, along with data from monitored line voltage, is used by the PCM to vary charging rate. Fig. Back of typical alternator illustrating wiring Fig. Another style of alternator wiring Back to Top Dakota, 2001-2005 Troubleshooting System Testing Print The charging system should be inspected if: A Diagnostic Trouble Code (DTC) is set relating to the charging system The charging system warning light (if equipped) is illuminated when the engine is running The "Check Gauges" lamp (if equipped) is illuminated when the engine is running The dashboard voltmeter (if equipped) indicates improper charging (either high or low) The battery is overcharged (electrolyte level is low and/or boiling out) The battery is undercharged (insufficient power to crank the starter) The starting point for all charging system problems begins with the inspection of the battery, related wiring and the alternator drive belt. The battery must be in good condition and fully charged before system testing. If a Diagnostic Trouble Code (DTC) is set, diagnose and repair the cause of the trouble code first. If equipped, the charging system warning light will illuminate if the charging voltage is either too high or too low. The warning light should illuminate when the key is turned to the ON position as a bulb check. When the alternator starts producing voltage due to the engine starting, the light should go out. A good sign of overly high voltage is lights that burn out and/or burn very brightly. Overcharging can also cause damage to the battery and electronic circuits. Drive belts are often overlooked when diagnosing a charging system failure. Check the belt tension, check travel limit marks on the tensioner, if fitted. Check belt condition and replace the belt if needed. A loose belt will result in an undercharged battery and a no-start condition. This is especially true in wet weather conditions when moisture causes the belt to become more slippery. If the vehicle is equipped with a voltmeter, this can sometimes give a clue to belt problems. If the indicated voltage stays low after starting, especially in wet weather, it may indicate that the belt is too loose. Other indications are indicated voltage fluctuations when loads are added or removed from the system as when turning on the air conditioner. Back to Top Dakota, 2001-2005 Voltage Regulator The Electronic Voltage Regulator (EVR) is a circuit within the Powertrain Control Module (PCM). It cannot be service separately. If EVR problems arise, the entire PCM must be replaced. Print Back to Top Engine Mechanical Dakota, 2001-2005 Accessory Drive Belts Adjustment Print Correct drive belt tension is required to ensure optimum performance of the belt driven engine accessories. Use the correct gauge when checking belt tension; there are different types of adjustment gauges for checking either a serpentine or a V-type belt. Refer to the instructions supplied with the gauge. Place gauge in the middle of the section of belt being tested (between two pulleys) to check tension. Do not allow the gauge (or gauge adapter) to contact anything but the belt. NOTE It is not necessary to adjust belt tension on the 3.7L. 3.9L or 5.9L engines. These engines are equipped with an automatic belt tensioner. The tensioner maintains correct belt tension at all times. 2.5L Engines Belt tension is adjusted at the power steering pump bracket and idler pulley assembly. 1. Disconnect negative battery cable from battery. 2. Loosen idler pulley bolt. 3. Loosen tension adjusting bolt. 4. Adjust tension adjusting bolt until reading is within specification. 5. Tighten idler pulley bolt and re-check belt tension. Adjust if necessary. Fig. Tension adjusting bolt (1) Idler pulley bolt (2) Belt (3) Belt Tension Inspection Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately. Drive Belt Routings NOTE The belt routing schematics are published from the latest information available at the time of publication. If anything differs between these schematics and the Belt Routing Label, use the schematics on Belt Routing Label. This label is located in the engine compartment, usually on the fan shroud. Fig. Accessory drive belt routing-2.5L engines with A/C Fig. Accessory drive belt routing-2.5L engines without A/C Fig. Accessory drive belt routing-3.7L and 4.7L engines Removal & Installation 2.5L Engine 1. Disconnect negative battery cable from battery. 2. Loosen idler pulley bolt. 3. Loosen tension adjusting bolt and remove accessory drive belt. To install: WARNING When installing the serpentine accessory drive belt, the belt MUST be routed correctly. If not, the engine may overheat due to the water pump rotating in the wrong direction. Refer to ACCESSORY BELT ROUTING. 1. Install new belt. Install belt tension gauge and tighten adjustment bolt until belt tension is within specification range. 2. Tighten idler pulley bolt and re-check belt tension. Adjust if necessary. 3.7L, 3.9L, 4.7L And 5.9L Engines 1. Attach a socket/wrench to pulley mounting bolt of automatic tensioner. 2. Rotate tensioner assembly clockwise (as viewed from front) until tension has been relieved from belt. 3. Remove belt from idler pulley first. 4. Remove belt from vehicle. To install: WARNING When installing the serpentine accessory drive belt, the belt MUST be routed correctly. If not, the engine may overheat due to the water pump rotating in the wrong direction. 1. Install new belt. Route the belt around all pulleys except the idler pulley. Rotate the tensioner arm until it contacts its stop position. Route the belt around the idler and slowly let the tensioner rotate into the belt. Make sure the belt is seated onto all pulleys. 2. With the drive belt installed, inspect the belt wear indicator. 3. On 4.7L Engines only, the gap between the tang and the housing stop (measurement A) must not exceed 24 mm (0.94 inches). If the measurement exceeds this specification replace the serpentine accessory drive belt. Fig. Automatic belt tensioner-Typical Fig. Wear Indicator-Measurement -A- must not exceed 25mm (0.94 inches) Back to Top Dakota, 2001-2005 Camshaft, Bearings & Lifters Bearing Replacement Print 2.5L Engine The camshaft rotates within four steel-shelled, babbitt-lined bearings that are pressed into the cylinder block and then line reamed. The camshaft bearing bores and bearing diameters are not the same size. They are stepped down in 0.254 mm (0.010 inch) increments from the front bearing (largest) to the rear bearing (smallest). This permits easier removal and installation of the camshaft. The camshaft bearings are pressure lubricated. NOTE It is not advisable to attempt to replace camshaft bearings unless special removal and installation tools are available. NOTE This procedure must be done with the engine removed and completely disassembled. 1. Remove the camshaft. 2. Using a special removal/installation tool, remove the camshaft bearings. To install: 1. Inspect the camshaft bearing journals for uneven wear pattern or finish. 2. Inspect the camshaft lobes and distributor gear for wear. 3. Inspect the camshaft thrust plate for wear. If the plate shows excessive wear inspect the camshaft oil pressure relief holes in the rear cam journal. The relief holes must be clean and free of debris. WARNING Make sure outside diameter of number 1 bearing is clean. Make sure that the bearing is properly installed in the engine block, align the oil hole in the bearing with the oil gallery in the bearing bore. Failure to do so will cause inadequate oil supply for the sprockets and timing chain. 4. Using a special removal/installation tool, install new camshaft bearings. 5. Lubricate the camshaft with clean engine oil. 6. Install the camshaft. 3.9L & 5.9L Engines NOTE It is not advisable to attempt to replace camshaft bearings unless special removal and installation tools are available. NOTE This procedure must be done with the engine removed and completely disassembled. 1. With engine completely disassembled, drive out rear cam bearing core hole plug. 2. Using a special removal/installation tool, remove the camshaft bearings. To install: 1. Install new camshaft bearings with a special removal/installation tool. 2. Bearings must be carefully aligned to bring oil holes into full register with oil passages from the main bearing. If the camshaft bearing shell oil holes are not in exact alignment, remove and install them correctly. 3. Install a new core hole plug at the rear of camshaft. Be sure this plug does not leak. Removal & Installation 2.5L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Recover the A/C refrigerant, if equipped with air conditioning. 4. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Grille, if necessary Radiator A/C condenser, if equipped Distributor Valve cover Rocker arms and pushrods Hydraulic valve tappets Accessory drive belt Crankshaft damper Front cover Timing chain and gears Camshaft To install: NOTE If the camshaft sprocket appears to have been rubbing against the cover, check the oil pressure relief holes in the rear cam journal for debris. 1. Lubricate the camshaft with clean engine oil. 2. Install or connect the following: Camshaft Timing chain and gears Front cover Crankshaft damper Accessory drive belt Hydraulic valve tappets Rocker arms and pushrods Valve cover Distributor A/C condenser, if equipped Radiator Grille, if removed Negative battery cable 3. Fill the cooling system. 4. Recharge the A/C system, if equipped. 5. Start the engine and check for leaks. 3.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Cylinder head covers Rocker arms Hydraulic lash adjusters 3. Set the engine at Top Dead Center (TDC) of the compression stroke for the No. 1 cylinder. 4. Install Timing Chain Wedge 8350 to retain the chain tensioners. Fig. Chain Tensioner Retaining Wedges-3.7L engine 5. Matchmark the timing chains to the camshaft sprockets. 6. Install Camshaft Holding Tool 6958 and Adapter Pins 8346 to the left camshaft sprocket. 7. Remove or disconnect the following: Right camshaft timing sprocket and target wheel Left camshaft sprocket Camshaft bearing caps, by reversing the tightening sequence Camshafts Fig. Hold the left camshaft sprocket with a spanner wrench while removing or installing the camshaft sprocket bolts-3.7L engine Fig. Camshaft bearing cap bolt tightening sequence-3.7L engine To install: 1. Install or connect the following: Camshafts. Tighten the bearing cap bolts in 1 / 2 turn increments, in sequence, to 100 inch lbs. (11 Nm). Target wheel to the right camshaft Camshaft timing sprockets and chains, by aligning the matchmarks 2. Remove the tensioner wedges and tighten the camshaft sprocket bolts to 90 ft. lbs. (122 Nm). 3. Install or connect the following: Hydraulic lash adjusters in their original locations Rocker arms in their original locations Cylinder head covers Negative battery cable Fig. Turn the camshaft with pliers, if needed, to align the dowel in the sprocket-3.7L engine 3.9L & 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Recover the A/C refrigerant, if equipped with air conditioning. 4. Set the crankshaft to Top Dead Center (TDC) of the compression stroke for the No. 1 cylinder. 5. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Accessory drive belt Power steering pump Water pump Radiator A/C condenser Grille Crankshaft damper Front cover Valve covers Distributor Intake manifold Rocker arms and pushrods Hydraulic lifters Timing chain and sprockets Camshaft thrust plate and chain oil tab Camshaft Fig. Camshaft holding tool C-3509-3.9L and 5.9L engines To install: 1. Install or connect the following: Camshaft Camshaft Holding Tool C-3509 Camshaft thrust plate and chain oil tab. Tighten the bolts to 18 ft. lbs. (24 Nm). Timing chain and sprockets. Tighten the camshaft sprocket bolt to 50 ft. lbs. (68 Nm). 2. Remove the camshaft holding tool. 3. Install or connect the following: Hydraulic lifters in their original positions Rocker arms and pushrods in their original positions Intake manifold Distributor Valve covers Front cover Crankshaft damper Grille A/C condenser Radiator Water pump Power steering pump Accessory drive belt Negative battery cable 4. Fill the cooling system. 5. Recharge the A/C system, if equipped. 6. Start the engine and check for leaks. 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Cylinder head covers Rocker arms Hydraulic lash adjusters 3. Set the engine at Top Dead Center (TDC) of the compression stroke for the No. 1 cylinder. 4. Install Timing Chain Wedge 8350 to retain the chain tensioners. Fig. Chain Tensioner Retaining Wedges-4.7L engine 5. Matchmark the timing chains to the camshaft sprockets. 6. Install Camshaft Holding Tool 6958 and Adapter Pins 8346 to the left camshaft sprocket. 7. Remove or disconnect the following: Right camshaft timing sprocket and target wheel Left camshaft sprocket Camshaft bearing caps, by reversing the tightening sequence Camshafts Fig. Hold the left camshaft sprocket with a spanner wrench while removing or installing the camshaft sprocket bolts-4.7L engine Fig. Camshaft bearing cap bolt tightening sequence-4.7L engine To install: 1. Install or connect the following: Camshafts. Tighten the bearing cap bolts in 1 / 2 turn increments, in sequence, to 100 inch lbs. (11 Nm). Target wheel to the right camshaft Camshaft timing sprockets and chains, by aligning the matchmarks 2. Remove the tensioner wedges and tighten the camshaft sprocket bolts to 90 ft. lbs. (122 Nm). 3. Install or connect the following: Hydraulic lash adjusters in their original locations Rocker arms in their original locations Cylinder head covers Negative battery cable Fig. Turn the camshaft with pliers, if needed, to align the dowel in the sprocket-4.7L engine Back to Top Dakota, 2001-2005 Cylinder Head Removal & Installation Print 2.5L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: NOTE Keep valve train components in order for reassembly. Negative battery cable Crankcase Ventilation (CCV) hoses Air cleaner assembly Valve cover Rocker arms Pushrods Accessory drive belt A/C compressor and bracket, if equipped Power steering pump and bracket, if equipped Fuel line Combination manifold Thermostat housing coolant hoses Spark plugs Engine Coolant Temperature (ECT) sensor connector Cylinder head To install: Fig. Fabricate 2 alignment dowels out of used cylinder head bolts-2.5L engine Fig. Alignment dowel locations-2.5L engine WARNING Cylinder head bolts may only be reused one time. If reusing a cylinder head bolt, place a paint mark on the bolt after installation. If a cylinder head bolt has a paint mark, discard it and use a new bolt. 1. Fabricate two alignment dowels from old cylinder head bolts. Cut the hex head off of the bolts, and cut a slot in each dowel to ease removal. 2. Install or connect the following: One dowel in bolt hole No. 8, and one dowel in bolt hole No. 10. Cylinder head and gasket. Cylinder head bolts except for No 8 and No 10. Coat the threads of bolt No. 7 with Loctite® 592 sealant. 3. Remove the alignment dowels and install the No. 8 and No. 10 head bolts. WARNING During the final tightening sequence, bolt No. 7 will be tightened to a lower torque value than the rest of the bolts. Do not overtighten bolt No. 7. Fig. Cylinder head torque sequence-2.5L engine 4. Tighten the cylinder head bolts, in sequence, as follows: A. Step 1: 22 ft. lbs. (30 Nm). B. Step 2: 45 ft. lbs. (61 Nm). C. Step 3: 45 ft. lbs. (61 Nm). D. Step 4: Bolts 1-6 to 110 ft. lbs. (149 Nm). E. Step 5: Bolt 7 to 100 ft. lbs. (136 Nm). F. Step 6: Bolts 8-10 to 110 ft. lbs. (149 Nm). G. Step 7: Repeat steps 4, 5 and 6. 5. Install or connect the following: ECT sensor connector Spark plugs Thermostat housing coolant hoses Combination manifold Fuel line Power steering pump and bracket, if equipped A/C compressor and bracket, if equipped Accessory drive belt Pushrods and rocker arms in their original positions Valve cover Air cleaner assembly CCV hoses Negative battery cable 6. Fill the cooling system. 7. Start the engine and check for leaks. 3.7L Engine Left Side 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Properly relieve the fuel system pressure. 4. Remove or disconnect the following: Negative battery cable Exhaust Y-pipe Intake manifold Cylinder head cover Engine cooling fan and shroud Accessory drive belt Power steering pump 5. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V6 marks on the camshaft sprockets are at 12 o-clock as shown. Crankshaft damper Front cover Fig. Camshaft sprocket timing marks-3.7L 6. Lock the secondary timing chain to the idler sprocket with Timing Chain Locking tool 8429. Fig. Camshaft locking tool-3.7L 7. Matchmark the secondary timing chain one link on each side of the V6 mark to the camshaft sprocket. NOTE The cylinder head is retained by twelve bolts. Four of the bolts are smaller and are at the front of the head. Left secondary timing chain tensioner Cylinder head access plug Secondary timing chain guide Camshaft sprocket Cylinder head To install: Fig. Examine the head bolts for signs of stretching-3.7L engine 1. Check the cylinder head bolts for signs of stretching and replace as necessary. 2. Lubricate the threads of the 11mm bolts with clean engine oil. 3. Coat the threads of the 8mm bolts with Mopar® Lock and Seal Adhesive. 4. Install the cylinder heads. Use new gaskets and tighten the bolts, in sequence, as follows: A. Step 1: Bolts 1-8 to 20 ft. lbs. (27 Nm) B. Step 2: Bolts 1-10 verify torque without loosening C. Step 3: Bolts 9-12 to 10 ft. lbs. (14 Nm) D. Step 4: Bolts 1-8 plus 1 / 4 (90 degree) turn E. Step 5: Bolts 9-12 to 19 ft. lbs. (26 Nm) Fig. Cylinder head bolt torque sequence-3.7L 5. Install or connect the following: Camshaft sprocket. Align the secondary chain matchmarks and tighten the bolt to 90 ft. lbs. (122 Nm). Secondary timing chain guide Cylinder head access plug Secondary timing chain tensioner. Refer to the timing chain procedure in this section. 6. Remove the Timing Chain Locking tool. 7. Install or connect the following: Front cover Crankshaft damper. Torque the bolt to 130 ft. lbs. (175 Nm). Power steering pump Accessory drive belt Engine cooling fan and shroud Cover Intake manifold Exhaust Y-pipe Negative battery cable 8. Fill and bleed the cooling system. 9. Start the engine, check for leaks and repair if necessary. Right Side 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Properly relieve the fuel system pressure. 4. Remove or disconnect the following: Negative battery cable Exhaust Y-pipe Intake manifold Valve cover Engine cooling fan and shroud Accessory drive belt Oil fill housing Power steering pump 5. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V6 marks on the camshaft sprockets are at 12 o-clock as shown. Fig. Crankshaft timing marks-3.7L engine Fig. Camshaft positioning-3.7L engine 6. Remove or disconnect the following: Crankshaft damper Front cover 7. Lock the secondary timing chains to the idler sprocket with Timing Chain Locking tool 8429. 8. Matchmark the secondary timing chains to the camshaft sprockets. 9. Remove or disconnect the following: NOTE Each cylinder head is retained by eight 11mm bolts and four 8mm bolts. Secondary timing chain tensioners Cylinder head access plugs Secondary timing chain guides Camshaft sprockets Cylinder heads To install: 1. Check the cylinder head bolts for signs of stretching and replace as necessary. 2. Lubricate the threads of the 11mm bolts with clean engine oil. 3. Coat the threads of the 8mm bolts with Mopar® Lock and Seal Adhesive. 4. Install the cylinder heads. Use new gaskets and tighten the bolts, in sequence, as follows: A. Step 1: Bolts 1-8 to 20 ft. lbs. (27 Nm) B. Step 2: Bolts 1-10 verify torque without loosening C. Step 3: Bolts 9-12 to 10 ft. lbs. (14 Nm) D. Step 4: Bolts 1-8 plus 1 / 4 (90 degree) turn E. Step 5: Bolts 9-12 to 19 ft. lbs. (26 Nm) 5. Install or connect the following: Camshaft sprockets. Align the secondary chain matchmarks and tighten the bolts to 90 ft. lbs. (122 Nm). Secondary timing chain guides Cylinder head access plugs Secondary timing chain tensioners. Refer to the timing chain procedure in this section. 6. Remove the Timing Chain Locking tool. 7. Install or connect the following: Front cover Crankshaft damper. Torque the bolt to 130 ft. lbs. (175 Nm). Rocker arms Power steering pump Oil fill housing Accessory drive belt Engine cooling fan and shroud Valve covers Intake manifold Exhaust Y-pipe Negative battery cable 8. Fill and bleed the cooling system. 9. Start the engine, check for leaks and repair if necessary. 3.9L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Relieve the fuel pressure. 3. Drain the cooling system. 4. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Accessory drive belt Alternator A/C compressor, if equipped Alternator and A/C compressor bracket Air injection pump, if equipped Closed Crankcase Ventilation (CCV) system Air cleaner and hose Fuel line Accelerator linkage Cruise control cable, if equipped Transmission cable, if equipped Spark plug wires Distributor Ignition coil harness connectors Engine Coolant Temperature (ECT) sensor connector Heater hoses Bypass hose Intake manifold vacuum lines Fuel injector harness connectors Valve covers Intake manifold Exhaust front pipe Exhaust manifolds Rocker arms Pushrods Cylinder heads To install: WARNING Position the crankshaft so that no piston is at Top Dead Center (TDC) prior to installing the cylinder heads. Do not rotate the crankshaft during or immediately after rocker arm installation. Wait 5 minutes for the hydraulic lash adjusters to bleed down. Fig. Cylinder head torque sequence-3.9L engine 1. Install the cylinder heads with new gaskets. Tighten the bolts in sequence as follows: A. Step 1: 50 ft. lbs. (68 Nm). B. Step 2: 105 ft. lbs. (143 Nm). C. Step 3: 105 ft. lbs. (143 Nm). 2. Install or connect the following: Pushrods in their original locations Rocker arms in their original locations. Tighten the bolts to 21 ft. lbs. (28 Nm). Exhaust manifolds Exhaust front pipe Intake manifold Valve covers Fuel injector harness connectors Intake manifold vacuum lines Bypass hose Heater hoses ECT sensor connector Ignition coil harness connectors Distributor Spark plug wires Transmission cable, if equipped Cruise control cable, if equipped Accelerator linkage Fuel line Air cleaner and hose CCV system Air injection pump, if equipped Alternator and A/C compressor bracket Alternator A/C compressor Accessory drive belt Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. 4.7L Engine Left Side 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Exhaust pipe Intake manifold Cylinder head cover Fan shroud and fan Accessory drive belt Power steering pump 4. Rotate the crankshaft until the damper mark is aligned with the TDC mark. Verify that the V8 mark on the camshaft sprocket is at the 12 o-clock position. 5. Remove or disconnect the following: Vibration damper Timing chain cover 6. Lock the secondary timing chains to the idler sprocket with tool 8515, or equivalent. 7. Mark the secondary timing chain, on link on either side of the V8 mark on the cam sprocket. 8. Remove the left side secondary chain tensioner. 9. Remove the cylinder head access plug. 10. Remove the chain guide. 11. Remove the camshaft sprocket. NOTE There are 4 smaller bolts at the front of the head. Don-t overlook these. 12. Remove the head bolts and head. WARNING Don-t lay the head on its sealing surface. Due to the design of the head gasket, any distortion to the head sealing surface will result in leaks. Fig. Cylinder head torque sequence-4.7L engine 13. Installation is the reverse of removal. Observe the following: Check the head bolts. If any necking is observed, replace the bolt. The 4 small bolts must be coated with sealer. The head bolts are tightened in the following sequence: Step 1: Bolts 1-10 to 15 ft. lbs. (20 Nm) Step 2: Bolts 1-10 to 35 ft. lbs. (47 Nm) Step 3: Bolts 11-14 to 18 ft. lbs. (25 Nm) Step 4: Bolts 1-10 90 degrees Step 5: Bolts 11-14 to 22 ft. lbs. Right Side 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Exhaust pipe Intake manifold Cylinder head cover Fan shroud and fan Oil filler housing Accessory drive belt 4. Rotate the crankshaft until the damper mark is aligned with the TDC mark. Verify that the V8 mark on the camshaft sprocket is at the 12 o-clock position. 5. Remove or disconnect the following: Vibration damper Timing chain cover 6. Lock the secondary timing chains to the idler sprocket with tool 8515, or equivalent. 7. Mark the secondary timing chain, on link on either side of the V8 mark on the cam sprocket. 8. Remove the left side secondary chain tensioner. 9. Remove the cylinder head access plug. 10. Remove the chain guide. 11. Remove the camshaft sprocket. WARNING Do not pry on the target wheel for any reason! NOTE There are 4 smaller bolts at the front of the head. Don-t overlook these. 12. Remove the head bolts and head. WARNING Don-t lay the head on its sealing surface. Due to the design of the head gasket, any distortion to the head sealing surface will result in leaks. Fig. Cylinder head torque sequence-4.7L engine 13. Installation is the reverse of removal. Observe the following: Check the head bolts. If any necking is observed, replace the bolt. The 4 small bolts must be coated with sealer. The head bolts are tightened in the following sequence: Step 1: Bolts 1-10 to 15 ft. lbs. (20 Nm) Step 2: Bolts 1-10 to 35 ft. lbs. (47 Nm) Step 3: Bolts 11-14 to 18 ft. lbs. (25 Nm) Step 4: Bolts 1-10 90 degrees Step 5: Bolts 11-14 to 22 ft. lbs. 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: NOTE Keep valvetrain components in order for reassembly. Negative battery cable Accessory drive belt Alternator A/C compressor, if equipped Air injection pump, if equipped Air cleaner assembly Closed Crankcase Ventilation (CCV) system Evaporative emissions control system Fuel line Accelerator linkage Cruise control cable Transmission cable Distributor cap and wires Ignition coil wiring Engine Coolant Temperature (ECT) sensor connector Heater hoses Bypass hose Upper radiator hose Intake manifold Valve covers Rocker arms Pushrods Exhaust manifolds Spark plugs Cylinder heads To install: WARNING Position the crankshaft so that no piston is at Top Dead Center (TDC) prior to installing the cylinder heads. Do not rotate the crankshaft during or immediately after rocker arm installation. Wait 5 minutes for the hydraulic lash adjusters to bleed down. Fig. Cylinder head torque sequence-5.9L engines 1. Install the cylinder heads. Use new gaskets and tighten the bolts in sequence as follows: A. Step 1: 50 ft. lbs. (68 Nm). B. Step 2: 105 ft. lbs. (143 Nm). C. Step 3: 105 ft. lbs. (143 Nm). 2. Install or connect the following: Spark plugs Exhaust manifolds Pushrods and rocker arms in their original positions Valve covers Intake manifold Upper radiator hose Bypass hose Heater hoses ECT sensor connector Ignition coil wiring Distributor cap and wires Transmission cable Cruise control cable Accelerator linkage Fuel line Evaporative emissions control system CCV system Air cleaner assembly A/C compressor, if equipped Air injection pump, if equipped Alternator Accessory drive belt Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Engine Removal & Installation Print 2.5L, 3.9L & 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Drain the engine oil. 4. Relieve the fuel system pressure. 5. Remove or disconnect the following: WARNING Do not lift the engine by the intake manifold. Damage to the manifold may result. Negative battery cable Hood Upper crossmember and top core support Radiator hoses Cooling fan and shroud Radiator Accelerator cable Cruise control cable, if equipped Transmission cable, if equipped Heater hoses Intake manifold vacuum lines Accessory drive belt Power steering pump A/C compressor, if equipped Engine control sensor harness connectors Engine block heater, if equipped Fuel line Exhaust front pipe Starter motor Torque converter, if equipped Transmission oil cooler lines, if equipped Engine mounts Transmission flange bolts. Support the transmission. Engine To install: 1. Install or connect the following: Engine. Tighten the engine mount bolts to 70 ft. lbs. (95 Nm). Transmission flange bolts. Tighten the bolts to 40-45 ft. lbs. (54-61 Nm). Transmission oil cooler lines, if equipped Torque converter, if equipped. Tighten the bolts to 23 ft. lbs. (31 Nm). Starter motor Exhaust front pipe Fuel line Engine block heater, if equipped Engine control sensor harness connectors A/C compressor, if equipped Power steering pump Accessory drive belt Intake manifold vacuum lines Heater hoses Transmission cable, if equipped Cruise control cable, if equipped Accelerator cable Radiator Cooling fan and shroud Radiator hoses Upper crossmember and top core support Hood Negative battery cable 2. Fill the crankcase to the correct level. 3. Fill the cooling system. 4. Start the engine and check for leaks. 3.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Discharge the A/C system. 3. Drain the cooling system. 4. Release the fuel rail pressure. 5. Remove the air cleaner assembly. 6. Disconnect the battery. 7. Remove the upper fan shroud. 8. Remove the accessory drive belt. 9. Remove the viscous fan. 10. Remove the A/C compressor and position out of the way. 11. Remove the generator and secure away from engine. NOTE Do not remove the phenolic pulley from the P/S pump. It is not required for P/S pump removal. 12. Remove the power steering pump with lines attached and secure away from engine. 13. Disconnect the heater hoses from the engine. 14. Disconnect the heater hoses from heater core and remove the hose assembly. 15. Remove the upper radiator hose from engine. 16. Remove the lower radiator hose from engine. 17. Disconnect the transmission oil cooler lines at the radiator. 18. Remove the radiator core support bracket. 19. Remove the radiator assembly, A/C Condenser and transmission oil cooler. 20. Disconnect throttle and speed control cables. 21. Disconnect the engine to body ground straps at the left side of cowl. 22. Disconnect the engine wiring harness at the following points: Intake air temperature (IAT) sensor Fuel Injectors Throttle Position (TPS) Switch Idle Air Control (IAC) Motor Engine Oil Pressure Switch Engine Coolant Temperature (ECT) Sensor Manifold Absolute Pressure MAP) Sensor Camshaft Position (CMP) Sensor Coil Over Plugs Crankshaft Position Sensor 23. Remove the coil over plugs. 24. Remove fuel rail and secure away from engine. NOTE It is not necessary to release the quick connect fitting from the fuel supply line for engine removal. 25. Remove the PCV hose. 26. Remove the breather hoses. 27. Remove the vacuum hose for the power brake booster. 28. Disconnect the knock sensors. 29. Remove the engine oil dipstick tube. 30. Remove the intake manifold. 31. Install the engine lifting fixture, special tool 8247, using original fasteners from the removed intake manifold, and fuel rail. 32. Raise the vehicle on hoist. 33. Remove the exhaust crossover pipe from exhaust manifolds. 34. On 4wd vehicles, disconnect the axle vent tube from the left side engine mount. 35. Remove the through bolt retaining nut and bolt from both the left and right side engine mounts. 36. On 4wd vehicles, remove the locknut from the left and right side engine mount brackets. 37. Disconnect two ground straps from the lower left hand side and one ground strap from the lower right hand side of the engine. 38. Disconnect the crankshaft position sensor. NOTE The following step applies to 4wd vehicles equipped with automatic transmission only. 39. On 4wd vehicles, remove the axle isolator bracket from the engine, transmission and the axle. 40. Remove the structural cover. 41. Remove the starter. 42. Remove the torque converter bolts (automatic transmission only). 43. Remove transmission to engine mounting bolts. 44. Disconnect the engine block heater power cable from the block heater, if equipped. 45. Lower the vehicle. 46. Remove throttle body resonator assembly and air inlet hose. 47. Disconnect the throttle and speed control cables. 48. Disconnect the tube from both the left and right side crankcase breathers. Remove the breathers. 49. Remove the generator. 50. Disconnect the two heater hoses from the timing chain cover and heater core. 51. Unclip and remove the heater hoses and tubes from the intake manifold. 52. Disconnect the engine harness at the following points: Intake air temperature (IAT) sensor Fuel Injectors Throttle Position (TPS) Switch Idle Air Control (IAC) Motor Engine Oil Pressure Switch Engine Coolant Temperature (ECT) Sensor Manifold absolute pressure (MAP) Sensor Camshaft Position (CMP) Sensor Coil Over Plugs 53. Disconnect the vacuum lines at the throttle body and intake manifold. 54. Remove the power steering pump and position out of the way. 55. Disconnect the body ground strap at the right side cowl. 56. Disconnect the body ground strap at the left side cowl. NOTE It will be necessary to support the transmission in order to remove the engine. 57. Position a suitable jack under the transmission. 58. Remove the engine from the vehicle. To install: Fig. Engine mount through-bolt removal-3.7L engine w/2WD Fig. Engine mount through-bolt removal-3.7L engine w/4WD Fig. Axle isolator bracket removal-3.7L engine w/4wd 1. Position the engine in the vehicle. Position both the left and right side engine mount brackets and install the through bolts and nuts. On 2WD vehicles, tighten nuts to 95 Nm (70 ft. lbs.); on 4wd vehicles, to 102 Nm (75 ft. lbs.). 2. On 4wd vehicles, install the locknuts onto the engine mount brackets. Tighten the locknuts to 41 Nm (30 ft. lbs.). 3. Remove the jack from under the transmission. 4. Remove Engine Lifting Fixture Tool 8347. 5. Remove Special Tools 8400 Lifting Studs. 6. Position the generator wiring behind the oil dipstick tube, then install the oil dipstick tube upper mounting bolt. 7. Connect both left and right side body ground straps. 8. Install the power steering pump. 9. Connect the fuel supply line quick connect fitting. 10. Connect the vacuum lines at the throttle body and intake manifold. 11. Connect the engine harness at the following points: Intake Air Temperature (IAT) Sensor Idle Air Control (IAC) Motor Fuel Injectors Throttle Position (TPS) Switch Engine Oil Pressure Switch Engine Coolant Temperature (ECT) Sensor Manifold Absolute Pressure (MAP) Sensor Camshaft Position (CMP) Sensor Coil Over Plugs 12. Position and install the heater hoses and tubes onto intake manifold. 13. Install the heater hoses onto the heater core and the engine front cover. 14. Install the generator. 15. Install the A/C condenser, radiator and transmission oil cooler. 16. Connect the radiator upper and lower hoses. 17. Connect the transmission oil cooler lines to the radiator. 18. Install the accessory drive belt, fan assembly and shroud. 19. Install A/C compressor. 20. Install both breathers. Connect the tube to both crankcase breathers. 21. Connect the throttle and speed control cables. 22. Install the throttle body resonator assembly and air inlet hose. Tighten the clamps to 4 Nm (35 inch lbs.). 23. Raise the vehicle. 24. Install the transmission to engine mounting bolts. Tighten the bolts to 41 Nm (30 ft. lbs.). 25. Install the torque converter bolts (automatic transmission only). 26. Connect the crankshaft position sensor. 27. On 4wd vehicles, position and install the axle isolator bracket onto the axle, transmission and engine block. 28. Install the starter. WARNING The structural cover requires a specific torque sequence. Failure to follow this sequence may cause severe damage to the cover. 29. Install the structural cover. 30. Install the exhaust crossover pipe. 31. Install the engine block heater power cable, if equipped. 32. On 4wd vehicles, connect the axle vent tube to the left side engine mount. 33. Lower the vehicle. 34. Check and fill engine oil. 35. Recharge the A/C system. 36. Refill the engine cooling system. 37. Install the battery tray and battery. 38. Connect the battery positive and negative cables. 39. Start the engine and check for leaks. Fig. Tighten the structural cover bolts in this order-3.7L Engine 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Disconnect the battery negative and positive cables. 3. Remove the battery and the battery tray. 4. Raise the vehicle on hoist. 5. Remove exhaust crossover pipe from the exhaust manifolds. 6. On 4wd vehicles, disconnect the axle vent tube from left side engine mount. 7. Remove the through bolt retaining nut and bolt from both the left and right side engine mounts. 8. On 4wd vehicles, remove the locknut from left and right side engine mount brackets. 9. Disconnect two ground straps from the lower left hand side and one ground strap from the lower right hand side of the engine. 10. Disconnect the crankshaft position sensor. NOTE The following step applies to 4X4 vehicles equipped with automatic transmission only. 11. On 4wd vehicles, remove the axle isolator bracket from the engine, transmission and the axle. 12. Remove the structural cover. 13. Remove the starter. 14. Drain the cooling system. 15. Remove the torque converter bolts (automatic transmission only). 16. Remove the transmission to engine mounting bolts. 17. Disconnect the engine block heater power cable from the block heater, if equipped. 18. Lower the vehicle. 19. Remove the throttle body resonator assembly and air inlet hose. 20. Disconnect the throttle and speed control cables. 21. Disconnect the tube from both the left and right side crankcase breathers. Remove breathers. 22. Discharge the A/C system. 23. Remove the A/C compressor. 24. Remove the shroud, fan assembly and accessory drive belt. 25. Disconnect the transmission oil cooler lines at the radiator. 26. Disconnect the radiator upper and lower hoses. 27. Remove the radiator, A/C condenser and transmission oil cooler. 28. Remove the generator. 29. Disconnect the two heater hoses from the timing chain cover and heater core. 30. Unclip and remove the heater hoses and tubes from the intake manifold. 31. Disconnect the engine harness at the following points : Intake air temperature (IAT) sensor Fuel Injectors Throttle Position (TPS) Switch Idle Air Control (IAC) Motor Engine Oil Pressure Switch Engine Coolant Temperature (ECT) Sensor Manifold Absolute Pressure (MAP) Sensor Camshaft Position (CMP) Sensor Coil Over Plugs 32. Disconnect the vacuum lines at the throttle body and intake manifold. 33. Release the fuel rail pressure then disconnect the fuel supply quick connect fitting at the fuel rail. 34. Remove the power steering pump and position out of the way. 35. Install Special Tools 8400 Lifting Studs, into the cylinder heads. 36. Install Engine Lifting Fixture Special Tool 8347 following these steps: Holding the lifting fixture at a slight angle, slide the large bore in the front plate over the hex portion of the lifting stud. Position the two remaining fixture arms onto the two Special Tools 8400 Lifting Studs, in the cylinder heads. Pull forward and upward on the lifting fixture so that the lifting stud rest in the slotted area below the large bore. Secure the lifting fixture to the three studs using three 7 / 16 - 14 N/C locknuts. Make sure the lifting loop in the lifting fixture is in the last hole (closest to the throttle body) to minimize the angle of engine during removal. 37. Disconnect the body ground strap at the right side cowl. 38. Disconnect the body ground strap at the left side cowl. NOTE It will be necessary to support the transmission in order to remove the engine. 39. Position a suitable jack under the transmission. 40. Remove the engine from the vehicle. To install: 1. Position the engine in the vehicle. Position both the left and right side engine mount brackets and install the through bolts and nuts. On 2WD vehicles, tighten nuts to 95 Nm (70 ft. lbs.); On 4wd vehicles, tighten to 102 Nm (75 ft. lbs.). 2. On 4wd vehicles, install locknuts onto the engine mount brackets. Tighten the locknuts to 41 Nm (30 ft. lbs.). 3. Remove the jack from under the transmission. 4. Remove Engine Lifting Fixture Special Tool 8347. 5. Remove Special Tools 8400 Lifting Studs. 6. Position the generator wiring behind the oil dipstick tube, then install the oil dipstick tube upper mounting bolt. 7. Connect both left and right side body ground straps. 8. Install the power steering pump. 9. Connect the fuel supply line quick connect fitting. 10. Connect the vacuum lines at the throttle body and intake manifold. 11. Connect the engine harness at the following points: Intake Air Temperature (IAT) Sensor Idle Air Control (IAC) Motor Fuel Injectors Throttle Position (TPS) Switch Engine Oil Pressure Switch Engine Coolant Temperature (ECT) Sensor Manifold Absolute Pressure (MAP) Sensor Camshaft Position (CMP) Sensor Coil Over Plugs 12. Position and install the heater hoses and tubes onto intake manifold. 13. Install the heater hoses onto the heater core and the engine front cover. 14. Install the generator. 15. Install the A/C condenser, radiator and transmission oil cooler. 16. Connect the radiator upper and lower hoses. 17. Connect the transmission oil cooler lines to the radiator. 18. Install the accessory drive belt, fan assembly and shroud. 19. Install the A/C compressor. 20. Install both breathers. Connect the tube to both crankcase breathers. 21. Connect the throttle and speed control cables. 22. Install the throttle body resonator assembly and air inlet hose. Tighten clamps 4 Nm (35 inch lbs.). 23. Raise the vehicle. 24. Install transmission to engine mounting bolts. Tighten the bolts to 41 Nm (30 ft. lbs.). 25. Install the torque converter bolts (automatic transmission only). 26. Connect crankshaft position sensor. 27. On 4wd vehicles, position and install the axle isolator bracket onto the axle, transmission and engine block. Tighten the bolts to specification. 28. Install the starter. WARNING The structural cover requires a specific torque sequence. Failure to follow this sequence may cause severe damage to the cover. Fig. Structural cover torque sequence-4.7L engine 29. Install the structural cover. 30. Install the exhaust crossover pipe. 31. Install the engine block heater power cable, if equipped. 32. On 4wd vehicles, connect the axle vent tube to left side engine mount. 33. Lower the vehicle. 34. Check and fill the engine oil. 35. Recharge the A/C system. 36. Refill the engine cooling system. 37. Install the battery tray and battery. 38. Connect the battery positive and negative cables. 39. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Exhaust Manifold Removal & Installation Print 2.5L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Exhaust front pipe Intake manifold Exhaust manifold To install: 1. Install or connect the following: Exhaust manifold Intake manifold Exhaust front pipe Negative battery cable 2. Start the engine and check for leaks. 3.7L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Exhaust manifold heat shields Exhaust Gas Recirculation (EGR) tube Exhaust Y-pipe Exhaust manifolds To install: NOTE If the exhaust manifold studs came out with the nuts when removing the exhaust manifolds, replace them with new studs. Fig. Exhaust manifold fastener locations-3.7L engines 1. Install or connect the following: Exhaust manifolds. Torque the fasteners to 20 ft. lbs. (27 Nm), starting with the center nuts and work out to the ends. Exhaust Y-pipe EGR tube Exhaust manifold heat shields Negative battery cable 2. Start the engine, check for leaks and repair if necessary. 3.9L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Heated Oxygen (HO 2 S) sensor connectors Exhaust manifold heat shields Exhaust front pipe Exhaust manifolds To install: NOTE If the exhaust manifold studs came out with the nuts when removing the exhaust manifolds, replace them with new studs. 1. Install or connect the following: Exhaust manifolds. Tighten the fasteners to 25 ft. lbs. (34 Nm), starting with the center fasteners and working out to the ends. Exhaust front pipe Exhaust manifold heat shields HO 2 S sensor connectors Negative battery cable 2. Start the engine and check for leaks. Fig. Stud and bolt locations-3.9L engine 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Battery Power distribution center Battery tray Windshield washer fluid bottle Air cleaner assembly Accessory drive belt A/C compressor A/C accumulator bracket Heater hoses Exhaust manifold heat shields Exhaust Y-pipe Starter motor Exhaust manifolds To install: 1. Install or connect the following: Exhaust manifolds, using new gaskets. Tighten the bolts to 18 ft. lbs. (25 Nm), starting with the inner bolts and work out to the ends. Starter motor Exhaust Y-pipe Exhaust manifold heat shields Heater hoses A/C accumulator bracket A/C compressor Accessory drive belt Air cleaner assembly Windshield washer fluid bottle Battery tray Power distribution center Battery 2. Fill the cooling system. 3. Start the engine and check for leaks. 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Exhaust manifold heat shields Exhaust Gas Recirculation (EGR) tube Exhaust Y-pipe Exhaust manifolds To install: NOTE If the exhaust manifold studs came out with the nuts when removing the exhaust manifolds, replace them with new studs. Fig. Exhaust manifold fastener locations-5.9L engines 1. Install or connect the following: Exhaust manifolds. Tighten the fasteners to 20 ft. lbs. (27 Nm), starting with the center nuts and work out to the ends. Exhaust Y-pipe EGR tube Exhaust manifold heat shields Negative battery cable 2. Fill the cooling system. 3. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Flywheel or Flexplate & Ring Gear Removal & Installation Print NOTE Flexplate is the term for a flywheel mated with an automatic transmission. The flywheel serves as the forward clutch engagement surface. It also serves as the ring gear with which the starter pinion engages to crank the engine. The most common reasons to replace the flywheel are: Broken teeth on the flywheel ring gear Excessive driveline chatter when engaging the clutch Excessive wear, scoring or cracking of the clutch surface 3.9L & 5.9L Engines NOTE The ring gear is replaceable only on engines mated with a manual transmission, or automatic transmissions with a non lock-up torque converter. On engines with an automatic transmission and lock-up torque converter, the ring gear is not replaceable, so you must replace the torque converter assembly. 1. Disconnect the negative battery cable. 2. Raise and support the vehicle. 3. Remove the transmission. 4. If your vehicle has a manual transmission: A. Remove the clutch assembly. NOTE The bolts should be loosened a little at a time in a crisscross pattern to avoid warping the pressure plate. B. Remove the flywheel bolts. NOTE The flywheel bolts should be loosened a little at a time in a crisscross pattern to avoid warping the flywheel. C. Replace the pilot bearing in the end of the crankshaft after removing the flywheel. D. The flywheel should be checked for cracks and glazing. It can be resurfaced by a machine shop. 5. If the ring gear is to be replaced, drill a hole in the gear between two teeth, being careful not to contact the flywheel surface. Using a cold chisel at this point, crack the ring gear and remove it. Polish the inner surface of the new ring gear and heat it in an oven to about 600°F (316°C). Quickly place the ring gear on the flywheel and tap it into place, making sure that it is fully seated. WARNING Never heat the ring gear past 800°F (426°C), or the tempering will be destroyed. 6. If your vehicle has an automatic transmission: A. Remove the torque converter from the transmission. This is done by removing the c-clamp from the edge of the bell-housing, and carefully sliding the torque converter off of the input shaft of the transmission. CAUTION The torque converter is usually rather heavy, be prepared for the weight when the converter comes off of the input shaft. B. The converter is mated to the engine by a drive plate. To unbolt it, remove the retaining bolts from the crankshaft. Fig. The drive plate and torque converter are marked for reassembly Fig. Removing the starter ring gear with a cold chisel To install: 1. If your vehicle has a manual transmission: A. Position the flywheel on the end of the crankshaft. Tighten the bolts a little at a time, in a cross pattern, to 55 ft. lbs. (75 Nm). B. Install the clutch assembly. 2. If your vehicle has an automatic transmission: A. Install the torque converter on the input shaft.. B. Install the c-clamp that retains the converter to the bell housing. 3. Install the transmission. 4. Lower the vehicle. 5. Connect the negative battery cable. 6. Check the transmission fluid level. 4.7L Engine 1. Remove the transmission. 2. Remove the bolts and flexplate. To install: 1. Tighten bolts in a criss-cross pattern to 45 ft. lbs. (60 Nm). Back to Top Dakota, 2001-2005 Intake Manifold Removal & Installation Print 2.5L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Relieve the fuel system pressure. 4. Remove or disconnect the following: Negative battery cable Air intake hose and resonator Accessory drive belt Power steering pump and brackets Fuel line Accelerator cable Cruise control cable, if equipped Transmission cable, if equipped Throttle Position (TP) sensor connector Intake Air Temperature (IAT) sensor connector Idle Air Control (IAC) valve connector Engine Coolant Temperature (ECT) sensor connector Heated Oxygen (HO 2 S) sensor connector Fuel injector harness connectors Manifold Absolute Pressure (MAP) sensor vacuum line Closed Crankcase Ventilation (CCV) hose Intake manifold vacuum hoses Molded vacuum hose harness 5. Remove bolts 2-5. Loosen bolt No. 1 and nuts 6-7. 6. Remove the intake manifold. To install: Fig. Manifold torque sequence-2.5L engine 1. Install the intake manifold with a new gasket. Tighten the fasteners in sequence as follows: A. Step 1: Tighten bolt No. 1 to 30 ft. lbs. (41 Nm) B. Step 2: Tighten bolts 2-5 to 23 ft. lbs. (31 Nm) C. Step 3: Tighten nuts 6-7 to 17 ft. lbs. (23 Nm) 2. Install or connect the following: Molded vacuum hose harness Intake manifold vacuum hoses CCV hose MAP sensor vacuum line Fuel injector harness connectors HO 2 S sensor connector ECT sensor connector IAC valve connector IAT sensor connector TP sensor connector Transmission cable, if equipped Cruise control cable, if equipped Accelerator cable Fuel line Power steering pump and brackets Accessory drive belt Air intake hose and resonator Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. 3.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Air cleaner assembly Accelerator cable Cruise control cable Manifold Absolute Pressure (MAP) sensor connector Intake Air Temperature (IAT) sensor connector Throttle Position (TP) sensor connector Idle Air Control (IAC) valve connector Engine Coolant Temperature (ECT) sensor Positive Crankcase Ventilation (PCV) valve and hose Canister purge vacuum line Brake booster vacuum line Cruise control servo hose Accessory drive belt Alternator A/C compressor Engine ground straps Ignition coil towers Oil dipstick tube Fuel line Fuel supply manifold Throttle body and mounting bracket Cowl seal Right engine lifting stud Intake manifold. Remove the fasteners in reverse of the tightening sequence. To install: Fig. Intake manifold torque sequence-3.7L engine 1. Install or connect the following: Intake manifold using new gaskets. Tighten the bolts, in sequence, to 105 inch lbs. (12 Nm). Right engine lifting stud Cowl seal Throttle body and mounting bracket Fuel supply manifold Fuel line Oil dipstick tube Ignition coil towers Engine ground straps A/C compressor Alternator Accessory drive belt Cruise control servo hose Brake booster vacuum line Canister purge vacuum line PCV valve and hose ECT sensor IAC valve connector TP sensor connector IAT sensor connector MAP sensor connector Cruise control cable Accelerator cable Air cleaner assembly Negative battery cable 2. Fill the cooling system. 3. Start the engine and check for leaks. 3.9L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Accessory drive belt Alternator A/C compressor Alternator and A/C compressor bracket Air cleaner assembly Fuel line Fuel supply manifold Accelerator cable Transmission cable Cruise control cable Distributor cap and wires Ignition coil wiring Engine Coolant Temperature (ECT) sensor connector Heater hose Upper radiator hose Bypass hose Closed Crankcase Ventilation (CCV) system Evaporative emissions system Intake manifold To install: Fig. Intake manifold torque sequence-3.9L engine 1. Install the intake manifold. Use a new gasket and tighten the bolts in sequence as follows: A. Step 1: Bolts 1-2 to 72 inch lbs. (8 Nm) using 12 inch lb. (1.4 Nm) increments. B. Step 2: Bolts 3-12 to 72 inch lbs. (8 Nm). C. Step 3: Bolts 1-12 to 72 inch lbs. (8 Nm). D. Step 4: Bolts 1-12 to 12 ft. lbs. (16 Nm). E. Step 5: Bolts 1-12 to 12 ft. lbs. (16 Nm). 2. Install or connect the following: Evaporative emissions system CCV system Bypass hose Upper radiator hose Heater hose ECT sensor connector Ignition coil wiring Distributor cap and wires Cruise control cable Transmission cable Accelerator cable Fuel supply manifold Fuel line Air cleaner assembly Alternator and A/C compressor bracket A/C compressor Alternator Accessory drive belt Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Air cleaner assembly Accelerator cable Cruise control cable Manifold Absolute Pressure (MAP) sensor connector Intake Air Temperature (IAT) sensor connector Throttle Position (TP) sensor connector Idle Air Control (IAC) valve connector Engine Coolant Temperature (ECT) sensor Positive Crankcase Ventilation (PCV) valve and hose Canister purge vacuum line Brake booster vacuum line Cruise control servo hose Accessory drive belt Alternator A/C compressor Engine ground straps Ignition coil towers Oil dipstick tube Fuel line Fuel supply manifold Throttle body and mounting bracket Cowl seal Right engine lifting stud Intake manifold. Remove the fasteners in reverse of the tightening sequence. To install: Fig. Intake manifold torque sequence-4.7L 1. Install or connect the following: Intake manifold using new gaskets. Tighten the bolts, in sequence, to 105 inch lbs. (12 Nm). Right engine lifting stud Cowl seal Throttle body and mounting bracket Fuel supply manifold Fuel line Oil dipstick tube Ignition coil towers Engine ground straps A/C compressor Alternator Accessory drive belt Cruise control servo hose Brake booster vacuum line Canister purge vacuum line PCV valve and hose ECT sensor IAC valve connector TP sensor connector IAT sensor connector MAP sensor connector Cruise control cable Accelerator cable Air cleaner assembly Negative battery cable 2. Fill the cooling system. 3. Start the engine and check for leaks. 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Accessory drive belt Alternator A/C compressor Alternator and A/C compressor bracket Air cleaner assembly Fuel line Fuel supply manifold Accelerator cable Transmission cable Cruise control cable Distributor cap and wires Ignition coil wiring Engine Coolant Temperature (ECT) sensor connector Heater hose Upper radiator hose Bypass hose Closed Crankcase Ventilation (CCV) system Evaporative emissions system Intake manifold To install: Fig. Intake manifold torque sequence-5.9L engines 1. Install the intake manifold. Use a new gasket and tighten the bolts in sequence as follows: A. Step 1: Bolts 1-4 to 72 inch lbs. (8 Nm) using 12 inch lb. (1.4 Nm) increments. B. Step 2: Bolts 5-12 to 72 inch lbs. (8 Nm). C. Step 3: Bolts 1-12 to 72 inch lbs. (8 Nm). D. Step 4: Bolts 1-12 to 12 ft. lbs. (16 Nm). E. Step 5: Bolts 1-12 to 12 ft. lbs. (16 Nm). 2. Install or connect the following: Evaporative emissions system CCV system Bypass hose Upper radiator hose Heater hose ECT sensor connector Ignition coil wiring Distributor cap and wires Cruise control cable Transmission cable Accelerator cable Fuel supply manifold Fuel line Air cleaner assembly Alternator and A/C compressor bracket A/C compressor Alternator Accessory drive belt Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Oil Pan Removal & Installation Print 2.5L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Negative battery cable Exhaust front pipe Starter motor Bell housing access cover Oil level sensor connector, if equipped Left and right motor mounts 4. Place a jack under the crankshaft damper and raise the engine for clearance. 5. Remove the oil pan. To install: 1. Fabricate 4 alignment dowels from 1 1 / 2 inch x 1 / 4 inch bolts. Cut the heads off the bolts and cut a slot into the top of the dowel to allow installation/removal with a screwdriver. 2. Install or connect the following: Dowels Oil pan, using a new gasket. Tighten the 3. Replace the alignment dowels with 1 1 / 4 inch bolts to 85 inch lbs. (9.5 Nm) and the 5 / 16 inch bolts to 11 ft. lbs. (15 Nm). / 4 inch bolts and tighten them to 85 inch lbs. (9.5 Nm). 4. Install or connect the following: Left and right motor mounts Oil level sensor connector, if equipped Bell housing access cover Starter motor Exhaust front pipe Negative battery cable 5. Fill the crankcase. 6. Start the engine and check for leaks. 3.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Disconnect the negative battery cable. 3. Install an engine support fixture. Do not raise engine at this time. 4. Loosen both left and right side engine mount through bolts. Do not remove bolts. 5. Remove the structural dust cover, if equipped. 6. Drain engine oil. 7. Remove the front crossmember. NOTE Raise the engine just enough to provide clearance for oil pan removal. Check for proper clearance at fan shroud to fan and cowl to intake manifold. 8. Raise engine to provide clearance to remove oil pan. NOTE Do not pry on oil pan or oil pan gasket. Gasket is integral to engine windage tray and does not come out with oil pan. 9. Remove the oil pan mounting bolts and oil pan. 10. Unbolt oil pump pickup tube and remove tube. 11. Inspect the integral windage tray and gasket and replace as needed. To install: Fig. Oil pan bolt torque sequence-3.7L Engine Fig. 3.7L engine bedplate bolt torque sequence 1. Clean the oil pan gasket mating surface of the bedplate and oil pan. 2. Inspect integrated oil pan gasket, and replace as necessary. 3. Position the integrated oil pan gasket/windage tray assembly. 4. Install the oil pickup tube 5. If removed, install stud at position No. 9. 6. Install the mounting bolt and nuts. Tighten nuts to 28 Nm (20 ft. lbs.). 7. Position the oil pan and install the mounting bolts. Tighten the mounting bolts to 15 Nm (11 ft. lbs.) in the sequence shown. 8. Lower the engine into mounts. 9. Install both the left and right side engine mount through bolts. Tighten the nuts to 68 Nm (50 ft. lbs.). 10. Remove the lifting device. 11. Install structural dust cover, if equipped. 12. Install the front crossmember. 13. Fill engine oil. 14. Reconnect the negative battery cable. 15. Start engine and check for leaks. 3.9L Engine 2-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Negative battery cable Distributor cap Oil dipstick Exhaust front pipe Flywheel access panel, if equipped Left and right motor mount through bolts Oil pan. Raise the engine as necessary for clearance. Fig. Oil pan alignment dowel placement-3.9L engine shown To install: 1. Fabricate 4 alignment dowels from 1 1 / 2 inch x 1 / 4 inch bolts. Cut the heads off the bolts and cut a slot into the top of the dowel to allow installation/removal with a screwdriver. 2. Install or connect the following: Alignment dowels Oil pan. Replace the dowels with bolts and tighten all bolts to 17 ft. lbs. (23 Nm). Left and right motor mount through bolts Flywheel access panel, if equipped Exhaust front pipe Oil dipstick Distributor cap Negative battery cable 3. Fill the crankcase to the correct level. 4. Start the engine and check for leaks. 4-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Negative battery cable Engine oil dipstick Front axle. Support the engine Exhaust front pipe Flywheel access panel, if equipped Oil pan To install: 1. Fabricate 4 alignment dowels from 1 1 / 2 inch x 1 / 4 inch bolts. Cut the heads off the bolts and cut a slot into the top of the dowel to allow installation/removal with a screwdriver. 2. Install or connect the following: Alignment dowels Oil pan. Replace the dowels with bolts and tighten all bolts to 17 ft. lbs. (23 Nm). Flywheel access panel, if equipped Exhaust front pipe Front axle Engine oil dipstick Negative battery cable 3. Fill the crankcase to the correct level. 4. Start the engine and check for leaks. 4.7L Engine 2-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove the upper fan shroud. 4. Remove the throttle body resonator and air inlet hose. 5. Remove the intake manifold. 6. Raise vehicle on hoist. 7. Disconnect exhaust pipe at exhaust manifolds. 8. Remove the structural dust cover using sequence shown. 9. Drain engine oil and remove oil filter. 10. Position suitable jack under engine. 11. Remove both left and right side engine mount through bolts. 12. Raise engine to provide clearance to remove oil pan. 13. Place blocks of wood between engine brackets and lower mounts to provide stability to engine. NOTE Do not pry on oil pan or oil pan gasket. Gasket is mounted to engine and does not come out with oil pan. 14. Remove the oil pan mounting bolts and oil pan. 15. Unbolt oil pump pickup tube and remove tube and oil pan gasket from engine. To install: Fig. Structural cover torque sequence-3.7L and 4.7L engines 1. Clean the oil pan gasket mating surface of the bedplate and oil pan. 2. Position the oil pan gasket and pickup tube with new o-ring. Install the mounting bolt and nuts. Tighten bolt and nuts to 28 Nm (20 ft. lbs.). 3. Position the oil pan and install the mounting bolts. Tighten the mounting bolts to 15 Nm (11 ft. lbs.) in the sequence shown. 4. Raise the engine and remove the blocks of wood. 5. Lower engine and install both the left and right side engine mount through bolts. Tighten the nuts to 68 Nm (50 ft. lbs.). 6. Remove jack and install oil filter. 7. Install structural dust cover. 8. Install exhaust pipe onto exhaust manifolds. 9. Lower vehicle. 10. Install intake manifold. 11. Install throttle body resonator and air inlet hose. 12. Install upper fan shroud. 13. Fill cooling system. 14. Fill engine oil. 15. Start engine and check for leaks. 4-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. NOTE On 4wd vehicles, the front axle must be removed before the oil pan can be removed. 2. Remove the front axle from vehicle. 3. Remove the structural dust cover using sequence shown. 4. Drain the engine oil and remove oil filter. 5. Remove the oil pan mounting bolts and oil pan. 6. Unbolt oil pump pickup tube and remove tube and oil pan gasket from engine. To install: Fig. Oil pan mounting bolt tightening sequence-4.7L engine Fig. Bedplate bolt tightening sequence-4.7L engine Fig. 4.7L engine bedplate bolt torque sequence 1. Clean the oil pan gasket mating surface of the bedplate and oil pan. 2. Position the oil pan gasket and pickup tube with new o-ring. Install the mounting bolt and nuts. Tighten bolt and nuts to 28 Nm (20 ft. lbs.). 3. Position the oil pan and install the mounting bolts. Tighten the mounting bolts to 15 Nm (11 ft. lbs.) in the sequence shown. 4. Install structural dust cover. 5. Install oil filter. 6. Install front axle. 7. Lower vehicle. 8. Fill engine oil. 9. Start engine check for leaks. 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Oil filter Starter motor Cooler lines Oil level sensor connector Heated Oxygen (HO 2 S) sensor connector Exhaust Y-pipe Oil pan Fig. Oil pan alignment dowels-3.9L, 5.9L engines To install: 1. Install or connect the following: Oil pan, using a new gasket. Tighten the bolts to 18 ft. lbs. (24 Nm). Exhaust Y-pipe Heated Oxygen (HO 2 S) sensor connector Oil level sensor connector Cooler lines Starter motor Oil filter 2. Fill the crankcase. 3. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Oil Pressure Sensor Removal & Installation Print 1. Disconnect the battery negative cable. 2. Disconnect the wiring from the oil pressure sensor. 3. Unscrew the old sensor. 4. Coat the threads of the new sensor with Teflon® tape or an oil-resistant sealer. 5. Tighten the sensor to 11-15 ft lbs. (15-20 Nm). 6. Reconnect wiring. Start the engine and check operation. Check for leaks. Testing The oil pressure sensor is threaded into the engine block (see location illustrations). Low oil pressure (less than 10 psi) will close the switch, creating a circuit that includes the warning light. The light will go on when the switch is closed. Disconnect the harness wire(s) from the sensor. Connect a jumper wire from the harness wire to ground on the engine (if single wire) or across the two harness wires. Turn the ignition switch ON . The low oil pressure warning light should go ON. Disconnect the jumper. The light should go OFF. If the lamp does not light when the circuit is completed, suspect a burned out bulb or wiring problem. With the engine OFF and oil pressure "zero", check for continuity across the switch body. On single-terminal switches, check continuity between the switch terminal and ground on the switch body or engine block. On two-terminal switches, check for continuity between the two terminals. In either case, there should be continuity. If not, replace the switch. Fig. Oil pressure sensor location near distributor-3.9L, 5.9L (gas engine) Fig. Oil pressure sensor location-3.7L, 4.7L engine Back to Top Dakota, 2001-2005 Oil Pump Removal & Installation Print 3.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Oil Pan Timing chain cover Timing chains and tensioners Oil pump 3. Installation is the reverse of removal. Torque the pump bolts, in sequence, to 21 ft. lbs. (28 Nm), Fig. Oil pump bolt torque sequence-3.7L 3.9L & 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Negative battery cable Oil pan Oil pump pick-up tube Oil pump Fig. Exploded view of the oil pump assembly-3.9L and 5.9L engines To install: 1. Install or connect the following: Oil pump. Tighten the bolts to 30 ft. lbs. (41 Nm). Oil pump pick-up tube Oil pan Negative battery cable 2. Fill the crankcase to the correct level. 3. Start the engine and check for leaks. 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Negative battery cable Oil pan Oil pump pick-up tube Timing chains and tensioners Oil pump To install: 1. Install or connect the following: Oil pump. Tighten the bolts to 21 ft. lbs. (28 Nm). Timing chains and tensioners Oil pump pick-up tube Oil pan Negative battery cable 2. Fill the crankcase to the correct level. 3. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Precautions Before servicing any vehicle, please be sure to read all of the following precautions, which deal with personal safety, prevention of component damage, and important points to take into consideration when servicing a motor vehicle: Print Never open, service or drain the radiator or cooling system when the engine is hot; serious burns can occur from the steam and hot coolant. Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well-ventilated area. Do not allow fuel spray or vapors to come in contact with a spark, open flame, or excessive heat (a hot drop light, for example). Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion. Refer to the additional fuel system precautions later in this section. Fuel injection systems often remain pressurized, even after the engine has been turned OFF . The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury. Brake fluid often contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance. The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer. You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner should be used. All new vehicles are now equipped with an air bag system, often referred to as a Supplemental Restraint System (SRS) or Supplemental Inflatable Restraint (SIR) system. The system must be disabled before performing service on or around system components, steering column, instrument panel components, wiring and sensors. Failure to follow safety and disabling procedures could result in accidental air bag deployment, possible personal injury and unnecessary system repairs. Always wear safety goggles when working with, or around, the air bag system. When carrying a non-deployed air bag, be sure the bag and trim cover are pointed away from your body. When placing a non-deployed air bag on a work surface, always face the bag and trim cover upward, away from the surface. This will reduce the motion of the module if it is accidentally deployed. Refer to the additional air bag system precautions later in this section. Clean, high quality brake fluid from a sealed container is essential to the safe and proper operation of the brake system. You should always buy the correct type of brake fluid for your vehicle. If the brake fluid becomes contaminated, completely flush the system with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint. Never operate the engine without the proper amount and type of engine oil; doing so WILL result in severe engine damage. Timing belt maintenance is extremely important. Many models utilize an interference-type, non-freewheeling engine. If the timing belt breaks, the valves in the cylinder head may strike the pistons, causing potentially serious (also time-consuming and expensive) engine damage. Refer to the maintenance interval charts for the recommended replacement interval for the timing belt, and to the timing belt section for belt replacement and inspection. Disconnecting the negative battery cable on some vehicles may interfere with the functions of the on-board computer system(s) and may require the computer to undergo a relearning process once the negative battery cable is reconnected. When servicing drum brakes, only disassemble and assemble one side at a time, leaving the remaining side intact for reference. Only an MVAC-trained, EPA-certified automotive technician should service the air conditioning system or its components. Back to Top Dakota, 2001-2005 Rear Main Seal Removal & Installation Print 3.7L & 4.7L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Transmission Flexplate 3. Thread Oil Seal Remover 8506 into the rear main seal as far as possible and remove the rear main seal. To install: 1. Install or connect the following: Seal Guide 8349-2 onto the crankshaft Rear main seal on the seal guide Rear main seal, using the Crankshaft Rear Oil Seal Installer 8349 and Driver Handle C-4171; tap it into place until the installer is flush with the cylinder block Flexplate. Tighten the bolts to 45 ft. lbs. (60 Nm). Transmission 2. Start the engine and check for leaks. 3.9L & 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the engine oil. 3. Remove or disconnect the following: Oil pan Oil pump Rear main bearing cap 4. Loosen the other main bearing cap bolts for clearance and remove the rear main seal halves. To install: 1. Install or connect the following: New upper seal half to the cylinder block New lower seal half to the bearing cap 2. Apply sealant to the rear main bearing cap. Fig. Sealant application locations -3.9L and 5.9L engines 3. Install or connect the following: Rear main bearing cap. Tighten all main bearing cap bolts to 85 ft. lbs. (115 Nm). Oil pump and oil pan 4. Fill the engine. 5. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Rocker Arms Removal & Installation Print 2.5L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE Keep valvetrain components in order for reassembly. Negative battery cable Accelerator cable Transmission cable, if equipped Cruise control cable, if equipped Valve cover Rocker arm bolts, loosen them evenly to avoid damaging the alignment bridges Rocker arms Fig. Exploded view of the rocker arm mounting-2.5L engine To install: 1. Install or connect the following: Rocker arms, pivots and bridges in their original positions. Tighten the bolts for each bridged pair one turn at a time to 21 ft. lbs. (28 Nm). Valve cover Cruise control cable, if equipped Transmission cable, if equipped Accelerator cable Negative battery cable 3.9L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE Keep all valvetrain components in order for assembly. Negative battery cable Valve covers Rocker arms To install: 1. Rotate the crankshaft so that the V6 mark on the crankshaft damper aligns with the timing mark on the front cover. The V6 mark is located 147 degrees AFTER Top Dead Center (TDC). 2. Install the rocker arms in their original positions and tighten the bolts to 21 ft. lbs. (28 Nm). CAUTION Do not rotate the crankshaft during or immediately after rocker arm installation. Wait 5 minutes for the hydraulic lash adjusters to bleed down. 3. Install or connect the following: Valve covers Negative battery cable 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: NOTE Keep valvetrain components in order for reassembly. Negative battery cable Valve covers Rocker arms To install: 1. Rotate the crankshaft so that the V8 mark on the crankshaft damper aligns with the timing mark on the front cover. The V8 mark is located 147 degrees AFTER Top Dead Center (TDC). 2. Install the rocker arms in their original positions and tighten the bolts to 21 ft. lbs. (28 Nm). CAUTION Do not rotate the crankshaft during or immediately after rocker arm installation. Wait 5 minutes for the hydraulic lash adjusters to bleed down. 3. Install or connect the following: Valve covers Negative battery cable Fig. Exploded view of the rocker arm assembly-8.0L engine Back to Top Dakota, 2001-2005 Rocker Arms & Shafts Removal & Installation Print 3.7L & 4.7L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Valve covers 3. Rotate the crankshaft so that the piston of the cylinder to be serviced is at Bottom Dead Center (BDC) and both valves are closed. 4. Use special tool 8516 to depress the valve and remove the rocker arm. 5. Repeat for each rocker arm to be serviced. NOTE Keep valvetrain components in order for reassembly. Fig. Rocker arm service-4.7L engine To install: 1. Rotate the crankshaft so that the piston of the cylinder to be serviced is at BDC. 2. Compress the valve spring and install each rocker arm in its original position. 3. Repeat for each rocker arm to be installed. 4. Install or connect the following: Cylinder head cover Negative battery cable Back to Top Dakota, 2001-2005 Timing Chain Cover, Chain, Sprockets, & Seal Removal & Installation Print 2.5L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Accessory drive belt Cooling fan and shroud Crankshaft damper Front crankshaft seal Accessory brackets Front cover Oil slinger 3. Rotate the crankshaft so that the timing marks are aligned. Fig. Timing mark alignment-2.5L engine 4. Remove the timing chain and sprockets. To install: 1. Turn the timing chain tensioner lever to the unlock (down) position. Pull the tensioner block toward the tensioner lever to compress the spring. Hold the block and turn the tensioner lever to the lock (up) position. Fig. Timing chain tensioner-2.5L engines 2. Install the timing chain and sprockets with the timing marks aligned. Tighten the camshaft sprocket bolt to 80 ft. lbs. (108 Nm) for 2.5L engines or to 50 ft. lbs. (68 Nm) for 4.0L engines. 3. Release the timing chain tensioner. 4. Install or connect the following: Oil slinger New front crankshaft seal to the front cover Front cover, using a new gasket Timing Case Cover Alignment and Seal Installation Tool 6139 in the crankshaft opening to center the front cover Fig. Timing Case Cover Alignment and Seal Installation Tool 6139-2.5L engine 5. Tighten the front cover bolts as follows: A. Step 1: Cover-to-block B. Step 2: Cover-to-block 1 5 C. Step 3: Oil pan-to-cover D. Step 4: Oil pan-to-cover / 4 inch bolts to 60 inch lbs. (7 Nm). / 16 inch bolts to 16 ft. lbs. (22 Nm). 1 5 / 4 inch bolts to 85 inch lbs. (9.5 Nm). / 16 inch bolts to 11 ft. lbs. (15 Nm). 6. Install or connect the following: Accessory brackets Crankshaft damper. Tighten the bolt to 80 ft. lbs. (108 Nm). Cooling fan and shroud Accessory drive belt Negative battery cable 7. Start the engine and check for leaks. 3.7L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Valve covers Radiator fan 4. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V6 marks on the camshaft sprockets are at 12 o-clock. Power steering pump Access plugs from the cylinder heads Oil fill housing Crankshaft damper Fig. Camshaft sprocket timing marks-3.7L Fig. Crankshaft timing marks-3.7L Fig. Cylinder head access plugs-3.7L 5. Compress the primary timing chain tensioner and install a lockpin. 6. Remove the secondary timing chain tensioners. 7. Hold the left camshaft with adjustable pliers and remove the sprocket and chain. Rotate the left camshaft 15 degrees clockwise to the neutral position. 8. Hold the right camshaft with adjustable pliers and remove the camshaft sprocket. Rotate the right camshaft 45 degrees counterclockwise to the neutral position. 9. Remove the primary timing chain and sprockets. To install: Fig. Secondary timing chain tensioner preparation-3.7L engine 1. Use a small prytool to hold the ratchet pawl and compress the secondary timing chain tensioners in a vise and install locking pins. NOTE The black bolts fasten the guide to the engine block and the silver bolts fasten the guide to the cylinder head. 2. Install or connect the following: Secondary timing chain guides. Tighten the bolts to 21 ft. lbs. (28 Nm). Secondary timing chains to the idler sprocket so that the double plated links on each chain are visible through the slots in the primary idler sprocket 3. Lock the secondary timing chains to the idler sprocket with Timing Chain Locking tool as shown. Fig. Installing the idler gear and timing chains-3.7L Fig. Counterbalance shaft timing marks-3.7L Fig. Tightening the left side camshaft sprocket-3.7L Fig. Tightening the right side camshaft sprocket-3.7L Fig. Use the Timing Chain Locking tool to lock the timing chains on the idler gear-3.7L engine Fig. Timing chain system and alignment marks-3.7L engine 4. Align the primary chain double plated links with the idler sprocket timing mark and the single plated link with the crankshaft sprocket timing mark. 5. Install the primary chain and sprockets. Tighten the idler sprocket bolt to 25 ft. lbs. (34 Nm). 6. Align the secondary chain single plated links with the timing marks on the secondary sprockets. Align the dot at the L mark on the left sprocket with the plated link on the left chain and the dot at the R mark on the right sprocket with the plated link on the right chain. 7. Rotate the camshafts back from the neutral position and install the camshaft sprockets. 8. Remove the secondary chain locking tool. 9. Remove the primary and secondary timing chain tensioner locking pins. 10. Hold the camshaft sprockets with a spanner wrench and tighten the retaining bolts to 90 ft. lbs. (122 Nm). Fig. Timing cover bolt torque sequence-3.7L 11. Install or connect the following: Front cover. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). Front crankshaft seal Cylinder head access plugs A/C compressor Alternator Accessory drive belt tensioner. Tighten the bolt to 40 ft. lbs. (54 Nm). Oil fill housing Crankshaft damper. Tighten the bolt to 130 ft. lbs. (175 Nm). Power steering pump Lower radiator hose Heater hoses Accessory drive belt Engine cooling fan and shroud Camshaft Position (CMP) sensor Valve covers Negative battery cable 12. Fill and bleed the cooling system. 13. Start the engine, check for leaks and repair if necessary. 3.9L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Accessory drive belt Radiator Cooling fan Water pump Crankshaft pulley Front crankshaft seal Front cover Timing chain and gears Fig. Timing chain alignment marks-3.9L, 5.9L engines To install: 1. Install or connect the following: Timing chain and gears. Align the timing marks and tighten the camshaft sprocket bolt to 35 ft. lbs. (47 Nm). Front cover. Tighten the bolts to 30 ft. lbs. (41 Nm). Front crankshaft seal Crankshaft pulley. Tighten the bolt to 135 ft. lbs. (183 Nm). Water pump Cooling fan Radiator Accessory drive belt Negative battery cable 2. Fill the cooling system. 3. Start the engine and check for leaks. 4.7L Engine 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Valve covers Camshaft Position (CMP) sensor Engine cooling fan and shroud Accessory drive belt Heater hoses Lower radiator hose Power steering pump 4. Rotate the crankshaft so that the crankshaft timing mark aligns with the Top Dead Center (TDC) mark on the front cover, and the V8 marks on the camshaft sprockets are at 12 o-clock. Fig. Crankshaft timing marks-4.7L engine Fig. Camshaft positioning-4.7L engine 5. Remove or disconnect the following: Crankshaft damper Oil fill housing Accessory drive belt tensioner Alternator A/C compressor Front cover Front crankshaft seal Cylinder head access plugs Secondary timing chain guides Fig. Cylinder head access plug locations-4.7L engine Fig. Compress and lock the primary chain tensioner-4.7L engine 6. Compress the primary timing chain tensioner and install a lockpin. 7. Remove the secondary timing chain tensioners. 8. Hold the left camshaft with adjustable pliers and remove the sprocket and chain. Rotate the left camshaft 15 degrees clockwise to the neutral position. 9. Hold the right camshaft with adjustable pliers and remove the camshaft sprocket. Rotate the right camshaft 45 degrees counterclockwise to the neutral position. 10. Remove the primary timing chain and sprockets. To install: Fig. Secondary timing chain tensioner preparation-4.7L engine 1. Use a small prytool to hold the ratchet pawl and compress the secondary timing chain tensioners in a vise and install locking pins. NOTE The black bolts fasten the guide to the engine block and the silver bolts fasten the guide to the cylinder head. 2. Install or connect the following: Secondary timing chain guides. Tighten the bolts to 21 ft. lbs. (28 Nm). Secondary timing chains to the idler sprocket so that the double plated links on each chain are visible through the slots in the primary idler sprocket 3. Lock the secondary timing chains to the idler sprocket with Timing Chain Locking tool 8515 as shown. Fig. Use the Timing Chain Locking tool to lock the timing chains on the idler gear-4.7L engine Fig. Timing chain system and alignment marks-4.7L engine 4. Align the primary chain double plated links with the idler sprocket timing mark and the single plated link with the crankshaft sprocket timing mark. 5. Install the primary chain and sprockets. Tighten the idler sprocket bolt to 25 ft. lbs. (34 Nm). 6. Align the secondary chain single plated links with the timing marks on the secondary sprockets. Align the dot at the L mark on the left sprocket with the plated link on the left chain and the dot at the R mark on the right sprocket with the plated link on the right chain. 7. Rotate the camshafts back from the neutral position and install the camshaft sprockets. 8. Remove the secondary chain locking tool. 9. Remove the primary and secondary timing chain tensioner locking pins. 10. Hold the camshaft sprockets with a spanner wrench and tighten the retaining bolts to 90 ft. lbs. (122 Nm). Fig. Timing chain cover bolt torque sequence-4.7L engine 11. Install or connect the following: Front cover. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). Front crankshaft seal Cylinder head access plugs A/C compressor Alternator Accessory drive belt tensioner. Tighten the bolt to 40 ft. lbs. (54 Nm). Oil fill housing Crankshaft damper. Tighten the bolt to 130 ft. lbs. (175 Nm). Power steering pump Lower radiator hose Heater hoses Accessory drive belt Engine cooling fan and shroud Camshaft Position (CMP) sensor Valve covers Negative battery cable 12. Fill the cooling system. 13. Start the engine and check for leaks. 5.9L Engines 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Drain the cooling system. 3. Remove or disconnect the following: Negative battery cable Accessory drive belt Cooling fan and shroud Water pump Power steering pump Crankshaft damper Front crankshaft seal Front cover 4. Rotate the crankshaft so that the camshaft sprocket and crankshaft sprocket timing marks are aligned. 5. Remove the timing chain and sprockets. To install: 1. Install the timing chain and sprockets with the timing marks aligned. Tighten the camshaft sprocket bolt to 50 ft. lbs. (68 Nm). 2. Install or connect the following: Front cover. Tighten the cover bolts to 30 ft. lbs. (41 Nm) and the oil pan bolts to 18 ft. lbs. (24 Nm). Front crankshaft seal Crankshaft damper. Tighten the bolt to 135 ft. lbs. (183 Nm). Power steering pump Water pump Cooling fan and shroud Accessory drive belt Negative battery cable 3. Fill the cooling system. 4. Start the engine and check for leaks. Back to Top Dakota, 2001-2005 Valve Covers Removal & Installation Print 2.5L Engines NOTE A cured gasket is part of the valve cover. 1. Disconnect negative cable from battery. 2. Disconnect the Crankcase Ventilation (CCV) vacuum hose from valve cover. 3. Remove the air inlet hose and resonator from the air cleaner and throttle body. 4. Remove the valve cover mounting bolts. 5. Remove the valve cover. 6. Remove any original sealer from the cover sealing surface of the engine cylinder head (NOT the valve cover) and clean the surface using a fabric cleaner. 7. Remove all residue from the sealing surface using a clean, dry cloth. To install Inspect the valve cover for cracks. Replace the cover, if cracked. NOTE The original dark grey gasket material should NOT be removed. If sections of the gasket material are missing or are compressed, replace the valve cover. However, sections with minor damage such as small cracks, cuts or chips may be repaired with a hand held applicator. The new material must be smoothed over to maintain gasket height. Allow the gasket material to cure prior to valve cover installation. 1. If a replacement cover is installed, transfer the CCV valve grommet the oil filler cap from the original cover to the replacement cover. 2. Install valve cover. Tighten the mounting bolts to 115 inch lbs. (13 Nm) torque. 3. Connect the CCV hoses. 4. Connect negative cable to battery. 5. Install the air inlet hose and resonator. 3.7L Engine Left Side 1. Disconnect negative cable from battery. 2. Remove the resonator assembly and air inlet hose. 3. Disconnect injector connectors and unclip the injector harness. 4. Route injector harness in front of valve cover. 5. Disconnect the left side breather tube and remove the breather tube. 6. Remove the valve cover mounting bolts. 7. Remove valve cover and gasket. NOTE The gasket may be used again, providing no cuts, tears, or deformations have occurred. To install: WARNING Do not use harsh cleaners to clean the valve covers. Severe damage to covers may occur. 1. Clean valve cover and both sealing surfaces. Inspect and replace gasket as necessary. 2. Tighten valve cover bolts and double ended studs to 105 inch lbs. (12 Nm). 3. Install left side breather and connect breather tube. 4. Connect injector electrical connectors and injector harness retaining clips. 5. Install the resonator and air inlet hose. 6. Connect negative cable to battery. Right Side 1. Disconnect battery negative cable. 2. Remove air cleaner assembly, resonator assembly and air inlet hose. 3. Drain cooling system, below the level of the heater hoses. 4. Remove accessory drive belt. 5. Remove air conditioning compressor retaining bolts and move compressor to the left. 6. Remove heater hoses. 7. Disconnect injector and ignition coil connectors. 8. Disconnect and remove positive crankcase ventilation (PCV) hose. 9. Remove oil fill tube. 10. Unclip injector and ignition coil harness and move away from valve cover. 11. Remove right rear breather tube and filter assembly. 12. Remove valve cover retaining bolts. 13. Remove valve cover and gasket. NOTE The gasket may be used again, providing no cuts, tears, or deformations have occurred. To install: WARNING Do not use harsh cleaners to clean the valve covers. Severe damage to covers may occur. 1. Clean valve cover and both sealing surfaces. Inspect and replace gasket as necessary. 2. Tighten valve cover bolts and double ended studs to 105 inch lbs. (12 Nm). 3. Install right rear breather tube and filter assembly. 4. Connect injector, ignition coil electrical connectors and harness retaining clips. 5. Install the oil fill tube. 6. Install PCV hose. 7. Install heater hoses. 8. Install air conditioning compressor retaining bolts. 9. Install accessory drive belt. 10. Fill Cooling system. 11. Install air cleaner assembly, resonator assembly and air inlet hose. 12. Connect battery negative cable. 3.9L & 5.9L Engines 1. Disconnect the negative cable from the battery. 2. Disconnect closed ventilation system and evaporation control system from valve cover. 3. Remove valve cover bolts, cover and gasket. The gasket may be used again. To install: 1. Position the valve cover gasket onto the head rail. 2. Position the valve cover onto the gasket and install the bolts. Tighten the bolts to 95 inch lbs. (11 Nm) torque. 3. Install closed crankcase ventilation system and evaporation control system. 4. Connect the negative cable to the battery. 5. Start engine and check for leaks. 4.7L Engine Left Side 1. Disconnect negative cable from battery. 2. Remove the resonator assembly and air inlet hose. 3. Disconnect injector connectors and unclip the injector harness. 4. Route injector harness in front of valve cover. 5. Disconnect the left side breather tube and remove the breather tube. 6. Remove the valve cover mounting bolts. 7. Remove valve cover and gasket. NOTE The gasket may be used again, provided no cuts, tears, or deformations have occurred. Fig. Correct stud location-left valve cover To install: WARNING Do not use harsh cleaners to clean the valve covers. Severe damage to covers may occur. 1. Clean valve cover and both sealing surfaces. Inspect and replace gasket as necessary. 2. Install valve cover and hand start all fasteners. Verify that all studs are in the correct location. 3. Tighten valve cover bolts and double ended studs to 105 inch lbs. (12 Nm). 4. Install left side breather and connect breather tube. 5. Connect injector electrical connectors and injector harness retaining clips. 6. Install the resonator and air inlet hose. 7. Connect negative cable to battery. Right Side 1. Disconnect battery negative cable. 2. Remove air cleaner assembly, resonator assembly and air inlet hose. 3. Drain cooling system. 4. Remove accessory drive belt. 5. Remove air conditioning compressor retaining bolts and move compressor to the left. 6. Remove heater hoses. 7. Disconnect injector and ignition coil connectors. 8. Disconnect and remove positive crankcase ventilation (PCV) hose. 9. Remove oil fill tube. 10. Unclip injector and ignition coil harness and move away from valve cover. 11. Remove right rear breather tube and filter assembly. 12. Remove valve cover retaining bolts. 13. Remove valve cover. NOTE The gasket may be used again, provided no cuts, tears, or deformations have occurred. Fig. Correct stud location-right valve cover To install: WARNING Do not use harsh cleaners to clean the valve covers. Severe damage to covers may occur. 1. Clean valve cover and both sealing surfaces. Inspect and replace gasket as necessary. 2. Install valve cover and hand start all fasteners. Verify that all double ended studs are in the correct location. 3. Tighten valve cover bolts and double ended studs to 105 inch lbs. (12 Nm). 4. Install right rear breather tube and filter assembly. 5. Connect injector, ignition coil electrical connectors and harness retaining clips. 6. Install the oil fill tube. 7. Install PCV hose. 8. Install heater hoses. 9. Install air conditioning compressor retaining bolts. 10. Install accessory drive belt. 11. Fill Cooling system. 12. Install air cleaner assembly, resonator assembly and air inlet hose. 13. Connect battery negative cable. Back to Top Dakota, 2001-2005 Valve Lash (Clearance) Adjustment All gasoline engines covered in this section use hydraulic lifters. No maintenance or periodic adjustment is required. Print Back to Top Engine Performance & Emission Controls Dakota, 2001-2005 Component Locations The Engine Coolant Temperature (ECT) is located on or near the thermostat housing (2.5L, 3.9L and 5.9L engines), or near the front of the intake manifold (3.7L, 4.7L engines). Print The ECT sensor's resistance changes in response to engine coolant temperature. The sensor resistance decreases as the coolant temperature increases, and vice-versa. This provides a reference signal to the PCM, which indicates engine coolant temperature. The signal sent to the PCM by the ECT sensor helps the PCM to determine spark advance, EGR flow rate, and air/fuel ratio. Some vehicles may have two ECTs fitted: one for input to the PCM and the other for input to the coolant temperature gauge or warning light. Fig. ECT sensor location-2.5L engine. Fig. ECT sensor location-3.9L, 5.9L engines. Thermostat housing removed for clarity Fig. ECT sensor location-3.7L, 4.7L engines. Back to Top Fuel System Dakota, 2001-2005 Removal & Installation These engines are equipped with a fuel filter/pressure regulator. This unit is not a regularly maintained unit and is serviced only when a DTC indicates a fault. Print Back to Top Chassis Electrical Dakota, 2001-2005 Arming The System Assuming that the system components (air bag control module, sensors, air bag, etc.) are installed correctly and are in good working order, the system is armed whenever the battery-s positive and negative battery cables are connected. Print WARNING If you have disarmed the air bag system for any reason, and are re-arming the system, make sure no one is in the vehicle (as an added safety measure), then connect the negative battery cable. Back to Top Dakota, 2001-2005 Clockspring (Coil) Centering Print Disconnect and isolate the battery negative cable before beginning any airbag system component diagnosis, testing, removal, or installation procedures. Allow system capacitor to discharge for two minutes before beginning any component service. This will disable the airbag system. Failure to disable the airbag system may result in accidental airbag deployment, personal injury, or death. The clockspring is mounted on the steering column behind the steering wheel. Its purpose is to maintain a continuous electrical circuit between the wiring harness and the driver's side air bag module. This assembly consists of a flat, ribbon-like electrically conductive tape that winds and unwinds with the steering wheel rotation. Service replacement clocksprings are shipped pre-centered and with a molded plastic locking pin that snaps into a receptacle on the rotor and is engaged between two tabs on the upper surface of the rotor case. The locking pin secures the centered clockspring rotor to the clockspring case during shipment, but the locking pin must be removed from the clockspring after it is installed on the steering column. This locking pin should not be removed until the clockspring has been installed on the steering column. If the locking pin is removed before the clockspring is installed on a steering column, the clockspring centering procedure must be performed. NOTE The clockspring cannot be repaired. If the clockspring is faulty, damaged, or if the driver airbag has been deployed, the clockspring must be replaced. NOTE Before starting this procedure, be certain to turn the steering wheel until the front wheels are in the straight-ahead position. 1. Place the front wheels in the straight-ahead position. 2. Remove the clockspring from the steering column. 3. Rotate the clockspring rotor clockwise to the end of its travel. Do not apply excessive torque. 4. From the end of the clockwise travel, rotate the rotor about two and one-half turns counterclockwise. 5. The engagement dowel and yellow rubber boot should end up at the bottom, and the arrows on the clockspring rotor and case should be in alignment. The clockspring is now centered. 6. The front wheels should still be in the straight-ahead position. Reinstall the clockspring onto the steering column. Fig. The clockspring assembly is mounted to the end of the column, behind the steering wheel Back to Top Dakota, 2001-2005 Disarming the System Print 1. Disconnect and isolate the negative battery cable. Wait 2 minutes for the system capacitor to discharge before performing any service. 2. When repairs are completed, connect the negative battery cable. Back to Top Dakota, 2001-2005 General Information Print CAUTION Some vehicles are equipped with an air bag system. The system must be disarmed before performing service on, or around, system components, the steering column, instrument panel components, wiring and sensors. Failure to follow the safety precautions and the disarming procedure could result in accidental air bag deployment, possible injury and unnecessary system repairs. NOTE This manual does not cover SRS repairs or replacement as such work should be left to a trained professional. The following precautions then, are only to inform the do-it-yourselfer and give him or her a greater appreciation for the system when required to work in proximity to SRS components. Back to Top Dakota, 2001-2005 Precautions Disconnect and isolate the battery negative cable before beginning any airbag system component diagnosis, testing, removal, or installation procedures. Allow system capacitor to discharge for two minutes before beginning any component service. This will disable the airbag system. Failure to disable the airbag system may result in accidental airbag deployment, personal injury, or death. Print Do not place an intact undeployed airbag face down on a solid surface. The airbag will propel into the air if accidentally deployed and may result in personal injury or death. When carrying or handling an undeployed airbag, the trim side (face) of the airbag should be pointing towards the body to minimize possibility of injury if accidental deployment occurs. Failure to do this may result in personal injury or death. Replace airbag system components with Mopar® replacement parts. Substitute parts may appear interchangeable, but internal differences may result in inferior occupant protection. Failure to do so may result in occupant personal injury or death. Wear safety glasses, rubber gloves, and long sleeved clothing when cleaning powder residue from vehicle after an airbag deployment. Powder residue emitted from a deployed airbag can cause skin irritation. Flush affected area with cool water if irritation is experienced. If nasal or throat irritation is experienced, exit the vehicle for fresh air until the irritation ceases. If irritation continues, see a physician. Do not use a replacement airbag that is not in the original packaging. This may result in improper deployment, personal injury, or death. The factory installed fasteners, screws and bolts used to fasten airbag components have a special coating and are specifically designed for the airbag system. Do not use substitute fasteners. Use only original equipment fasteners listed in the parts catalog when fastener replacement is required. During, and following, any child restraint anchor service, due to impact event or vehicle repair, carefully inspect all mounting hardware, tether straps, and anchors for proper installation, operation, or damage. If a child restraint anchor is found damaged in any way, the anchor must be replaced. Failure to do this may result in personal injury or death. Deployed and non-deployed airbags may or may not have live pyrotechnic material within the airbag inflator. Do not dispose of driver/passenger/curtain airbags or seat belt tensioners unless you are sure of complete deployment. Refer to the Hazardous Substance Control System for proper disposal. Dispose of deployed airbags and tensioners consistent with state, provincial, local, and federal regulations. After any airbag component testing or service, do not connect the battery negative cable. Personal injury or death may result if the system test is not performed first. If the vehicle is equipped with the Occupant Classification System (OCS), do not connect the battery negative cable before performing the OCS Verification Test using the scan tool and the appropriate diagnostic information. Personal injury or death may result if the system test is not performed properly. Never replace both the Occupant Restraint Controller (ORC) and the Occupant Classification Module (OCM) at the same time. If both require replacement, replace one, and then perform the Airbag System test before replacing the other. Both the ORC and the OCM store Occupant Classification System (OCS) calibration data, which they transfer to one another when one of them is replaced. If both are replaced at the same time, an irreversible fault will be set in both modules and the OCS may malfunction and cause personal injury or death. If equipped with OCS, the Seat Weight Sensor is a sensitive, calibrated unit and must be handled carefully. Do not drop or handle roughly. If dropped or damaged, replace with another sensor. Failure to do so may result in occupant injury or death. If equipped with OCS, the front passenger seat must be handled carefully as well. When removing the seat, be careful when setting on floor not to drop. If dropped, the sensor may be inoperative, could result in occupant injury, or possibly death. If equipped with OCS, when the passenger front seat is on the floor, no one should sit in the front passenger seat. This uneven force may damage the sensing ability of the seat weight sensors. If sat on and damaged, the sensor may be inoperative, could result in occupant injury, or possibly death. Back to Top Drive Train Dakota, 2001-2005 Transmission Removal & Installation Print 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Negative battery cable Rear driveshaft Crankshaft Position (CKP) sensor Exhaust front pipe Transmission braces, if equipped Starter motor Transmission oil cooler lines Torque converter access cover Torque converter Transmission oil dipstick tube Vehicle Speed (VSS) sensor connector Park/Neutral switch connector Shift cable Throttle valve cable Transmission mount and crossmember. Support the transmission. Front driveshaft and transfer case, if equipped Transmission flange bolts Transmission To install: 1. Install or connect the following: Transmission. Tighten the flange bolts to 65 ft. lbs. (87 Nm). Front driveshaft and transfer case, if equipped Transmission mount and crossmember Throttle valve cable Shift cable Park/Neutral switch connector VSS sensor connector Transmission oil dipstick tube Torque converter. Tighten the bolts to 23 ft. lbs. (31 Nm) for 10.75 inch converters and to 35 ft. lbs. (47 Nm) for 12.2 inch converters. Torque converter access cover Transmission oil cooler lines Starter motor Transmission braces, if equipped. Tighten the bolts to 30 ft. lbs. (41 Nm). Exhaust front pipe CKP sensor Rear driveshaft Negative battery cable 42rle 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Disconnect the negative battery cable. 3. Raise and support the vehicle 4. Remove any necessary skid plates. 5. Mark the propeller shaft and axle companion flanges for assembly alignment. 6. Remove the rear propeller shaft. 7. Remove the front propeller shaft, if necessary. 8. Disconnect the wires from the input and output speed sensors. 9. Disconnect the wires from the transmission range sensor and the solenoid/pressure switch assembly. 10. Remove the bolts holding the exhaust crossover pipe to the pre-catalytic converter pipe flanges. 11. Remove the bolts holding the exhaust crossover pipe to the catalytic converter flange. 12. Disconnect gearshift cable from transmission manual valve lever. 13. Disengage the shift cable from the cable support bracket. 14. Remove the starter motor. 15. Remove the engine to transmission collar. 16. Rotate the crankshaft in clockwise direction until the converter bolts are accessible. Then remove the bolts one at a time. Rotate the crankshaft with a socket wrench on dampener bolt. 17. Disconnect the transmission vent hose from the transmission. 18. Remove the transfer case. 19. Support the rear of engine with a safety stand or jack. 20. Raise the transmission slightly with a service jack to relieve the load on the crossmember and supports. 21. Remove the bolts securing the rear support and cushion to the transmission and crossmember. 22. Remove the bolts attaching the crossmember to frame and remove crossmember. 23. Disconnect the transmission fluid cooler lines at the transmission fittings and clips. 24. Remove all remaining converter housing bolts. 25. Carefully work the transmission and torque converter assembly rearward off the engine block dowels. 26. Hold the torque converter in place during transmission removal. 27. Lower the transmission and remove the assembly from under the vehicle. 28. To remove the torque converter, carefully slide the torque converter out of the transmission. To install: 1. Check the torque converter hub and hub drive flats for sharp edges burrs, scratches, or nicks. Polish the hub and flats with 320/400 grit paper and crocus cloth if necessary. Verify that the converter hub O-ring is properly installed and is free of any debris. The hub must be smooth to avoid damaging pump seal at installation. 2. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, from the original transmission onto the replacement transmission. 3. Lubricate the oil pump seal lip with transmission fluid. 4. Align the converter and oil pump. 5. Carefully insert the converter in the oil pump. Then rotate the converter back and forth until fully seated in the pump gears. 6. Check the converter seating with a steel scale and straightedge. The surface of the converter lugs should be at least 13mm ( 1 / 2 in.) to the rear of straightedge when the converter is fully seated. 7. Temporarily secure the converter with a C-clamp. 8. Position the transmission on the jack and secure it with chains. 9. Check the condition of the converter driveplate. Replace the plate if cracked, distorted or damaged. Also, be sure the transmission dowel pins are seated in the engine block and protrude far enough to hold the transmission in alignment. 10. Apply a light coating of high temperature grease to the torque converter hub pocket in the rear pocket of the engine-s crankshaft. 11. Raise the transmission and align the torque converter with the drive plate and transmission converter housing with the engine block. 12. Move the transmission forward. Then raise, lower or tilt transmission to align the converter housing with engine block dowels. 13. Carefully work the transmission forward and over the engine block dowels until the converter hub is seated in the crankshaft. Verify that no wires, or the transmission vent hose, have become trapped between the engine block and the transmission. 14. Install the two bolts to attach the transmission to the engine. 15. Install the remaining torque converter housing to engine bolts. Tighten to 68 Nm (50 ft. lbs.). 16. Install the transfer case, if equipped. Tighten the transfer case nuts to 35 Nm (26 ft. lbs.). 17. Install the rear transmission crossmember. Tighten the crossmember to frame bolts to 68 Nm (50 ft. lbs.). 18. Install the rear support to the transmission. Tighten the bolts to 47 Nm (35 ft. lbs.). 19. Lower the transmission onto the crossmember and install the bolts attaching the transmission mount to the crossmember. Tighten clevis bracket to crossmember bolts to 47 Nm (35 ft. lbs.). Tighten the clevis bracket to rear support bolt to 68 Nm (50 ft. lbs.). 20. Remove the engine support fixture. 21. Connect the gearshift cable to the support bracket and transmission manual lever. 22. Connect the input and output speed sensor wires. 23. Connect the wires to the transmission range sensor and the solenoid/pressure switch assembly. 24. Install the torque converter-to-driveplate bolts. Tighten the bolts to 88 Nm (65 inch lbs.). 25. Install the starter motor and cooler line bracket. 26. Connect the cooler lines to transmission. 27. Install the transmission fill tube. 28. Install the exhaust components. 29. Align and connect the propeller shaft(s). 30. Adjust the gearshift cable if necessary. 31. Install any skid plates removed previously. 32. Lower the vehicle. 33. Fill the transmission with the required amount of Mopar® ATF +4, Automatic Transmission Fluid. 545RFE 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Disconnect the negative battery cable. 3. Raise and support the vehicle 4. Remove any necessary skid plates. 5. Mark propeller shaft and axle companion flanges for assembly alignment. 6. Remove the rear propeller shaft. 7. Remove the front propeller shaft, if necessary. 8. Remove the engine to transmission collar. 9. Remove the exhaust support bracket from the rear of the transmission. 10. Disconnect and lower or remove any necessary exhaust components. 11. Remove the starter motor. 12. Rotate crankshaft in clockwise direction until converter bolts are accessible. Then remove bolts one at a time. Rotate crankshaft with socket wrench on dampener bolt. 13. Disengage the output speed sensor connector from the output speed sensor. 14. Disengage the input speed sensor connector from the input speed sensor. 15. Disengage the transmission solenoid/TRS assembly connector from the transmission solenoid/TRS assembly. 16. Disengage the line pressure sensor connector from the line pressure sensor. 17. Disconnect gearshift cable from transmission manual valve lever. 18. Disconnect transmission fluid cooler lines at transmission fittings and clips. 19. Disconnect the transmission vent hose from the transmission. 20. Support rear of engine with safety stand or jack. 21. Raise transmission slightly with service jack to relieve load on crossmember and supports. 22. Remove bolts securing rear support and cushion to transmission and crossmember. 23. Remove bolts attaching crossmember to frame and remove crossmember. 24. Remove transfer case. 25. Remove all remaining converter housing bolts. 26. Carefully work transmission and torque converter assembly rearward off engine block dowels. 27. Hold torque converter in place during transmission removal. 28. Lower transmission and remove assembly from under the vehicle. 29. To remove torque converter, carefully slide torque converter out of the transmission. To install: 1. Check torque converter hub and hub drive flats for sharp edges burrs, scratches, or nicks. Polish the hub and flats with 320/400 grit paper and crocus cloth if necessary. Verify that the converter hub O-ring is properly installed and is free of any debris. The hub must be smooth to avoid damaging pump seal at installation. 2. If a replacement transmission is being installed, transfer any components necessary, such as the manual shift lever and shift cable bracket, from the original transmission onto the replacement transmission. 3. Lubricate oil pump seal lip with transmission fluid. 4. Align converter and oil pump. 5. Carefully insert converter in oil pump. Then rotate converter back and forth until fully seated in pump gears. 6. Check converter seating with steel scale and straightedge. Surface of converter lugs should be at least 13mm ( 1 / 2 in.) to rear of straightedge when converter is fully seated. 7. Temporarily secure converter with C-clamp. 8. Position transmission on jack and secure it with chains. 9. Check condition of converter driveplate. Replace the plate if cracked, distorted or damaged. Also be sure transmission dowel pins are seated in engine block and protrude far enough to hold transmission in alignment. 10. Apply a light coating of high temperature grease to the torque converter hub pocket in the rear pocket of the engine-s crankshaft. 11. Raise transmission and align the torque converter with the drive plate and transmission converter housing with the engine block. 12. Move transmission forward. Then raise, lower or tilt transmission to align the converter housing with engine block dowels. 13. Carefully work transmission forward and over engine block dowels until converter hub is seated in crankshaft. Verify that no wires, or the transmission vent hose, have become trapped between the engine block and the transmission. 14. Install two bolts to attach the transmission to the engine. 15. Install remaining torque converter housing to engine bolts. Tighten to 68 Nm (50 ft. lbs.). 16. Install transfer case, if equipped. Tighten transfer case nuts to 35 Nm (26 ft. lbs.). 17. Install rear transmission crossmember. Tighten crossmember to frame bolts to 68 Nm (50 ft. lbs.). 18. Install rear support to transmission. Tighten bolts to 47 Nm (35 ft. lbs.). 19. Lower transmission onto crossmember and install bolts attaching transmission mount to crossmember. Tighten clevis bracket to crossmember bolts to 47 Nm (35 ft. lbs.). Tighten the clevis bracket to rear support bolt to 68 Nm (50 ft. lbs.). 20. Remove engine support fixture. 21. Connect gearshift cable to transmission. 22. Connect wires to solenoid and pressure switch assembly connector, input and output speed sensors, and line pressure sensor. Be sure transmission harnesses are properly routed. 23. Install torque converter-to-driveplate bolts. Tighten bolts to 31 Nm (270 inch lbs.). 24. Install starter motor and cooler line bracket. 25. Connect cooler lines to transmission. 26. Install transmission fill tube. 27. Install exhaust components. 28. Install the engine collar onto the transmission and the engine. Tighten the bolts to 54 Nm (40 ft. lbs.). 29. Align and connect propeller shaft(s). 30. Adjust gearshift cable if necessary. 31. Install any skid plates removed previously. 32. Lower vehicle. 33. Fill transmission with Mopar® ATF +4, Automatic Transmission Fluid. Back to Top Steering Dakota, 2001-2005 Description Dakotas are equipped with a power rack and pinion steering system, which is comprised of: Print Rack and pinion steering gear Belt driven hydraulic steering pump Pump pressure and return hoses Oil Cooler (on some vehicles) Steering Column Fig. Power steering pump (1), gear (2) and oil cooler (3)-a typical rack and pinion steering system Back to Top Dakota, 2001-2005 Removal & Installation Print 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Front wheels Outer tie rod ends Steering shaft coupler Power steering hoses Steering gear Fig. Rack and pinion steering gear mounting used on the 2001-03 2WD Dakota models To install: 1. Install or connect the following: Steering gear. Tighten the bolts to 190 ft. lbs. (258 Nm). Power steering hoses. Tighten the fittings to 25 ft. lbs. (35 Nm). Steering shaft coupler. Tighten the bolt to 36 ft. lbs. (49 Nm). Outer tie rod ends. Tighten the nuts to 65 ft. lbs. (88 Nm). Front wheels 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Siphon out as much power steering fluid as possible from the pump. 3. Lock the steering wheel. 4. Raise and support the vehicle. 5. Remove the front tires. 6. Remove the nuts from the tie rod ends. 7. Separate tie rod ends from the knuckles. 8. Remove the steering gear pinch bolt. 9. Remove the lower steering coupling from the steering gear. 10. Turn the steering gear to the full right position. NOTE Protect the end of hoses to prevent contamination to the system and damage to the O-rings. 11. Remove the power steering lines from the gear. 12. Remove the steering gear mounting bolts and nuts. 13. Tip the gear forward to allow clearance and move to the right then tip the gear downward on the left side to remove from the vehicle. To install: NOTE Before installing gear inspect bushings and replace if worn or damaged. 1. Install gear to the vehicle and tighten mounting nuts and bolts to 190 ft. lbs. (258 Nm). 2. Install power steering lines to steering gear and tighten the pressure hose to 23 ft. lbs. (31 Nm) and tighten the return hose to 27 ft. lbs. (37 Nm). 3. Slide the shaft coupler onto gear. Install new bolt and tighten to 36 ft. lbs. (49 Nm). 4. Clean tie rod end studs and knuckle tapers. 5. Install tie rod ends into the steering knuckles and tighten the nuts to 55 ft. lbs. (75 Nm). 6. Install the front tires. 7. Remove the support and lower the vehicle. 8. Unlock the steering wheel. 9. Fill system with fluid. 10. Adjust the toe position. 2-Wheel Drive NOTE The steering column on vehicles with an automatic transmission may not be equipped with an internal locking shaft that allows the ignition key cylinder to be locked with the key. Alternative methods of locking the steering wheel for service will have to be used. 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Siphon out as much power steering fluid as possible from the pump. 3. Lock the steering wheel. 4. Raise and support the vehicle. 5. Remove the front tires. 6. Remove the nuts from the tie rod ends. 7. Separate tie rod ends from the knuckles with Puller C-3894-A, or equivalent. 8. Remove the power steering lines from the gear. 9. Remove the lower coupler bolt and slide the coupler off the gear. 10. Remove the mounting bolts from the gear to the front crossmember and remove the gear. Fig. Steering gear mounting-2004 2 wheel drive Fig. Steering gear coupler To install: NOTE Before installing gear inspect bushings and replace if worn or damaged. 1. Install gear on front crossmember and tighten mounting bolts to 200 ft. lbs. (271 Nm). 2. Slide shaft coupler onto gear. Install new bolt and tighten to 36 ft. lbs. (49 Nm). 3. Clean tie rod end studs and knuckle tapers. 4. Install tie rod ends into the steering knuckles and tighten the nuts to 60 ft. lbs. (81 Nm). 5. Install power steering lines to steering gear and tighten the hose to 23 ft. lbs. (31 Nm). 6. Install the front tires. 7. Remove support and lower vehicle. 8. Unlock the steering wheel. 9. Fill system with fluid. 10. Adjust the toe position. 4-Wheel Drive NOTE The steering column on vehicles with an automatic transmission may not be equipped with an internal locking shaft that allows the ignition key cylinder to be locked with the key. Alternative methods of locking the steering wheel for service will have to be used. 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Siphon out as much power steering fluid as possible from the pump. 3. Lock the steering wheel. 4. Raise and support the vehicle. 5. Remove the front tires. 6. Remove the nuts from the tie rod ends. 7. Separate tie rod ends from the knuckles with Puller C-3894-A, or equivalent. 8. Remove the splash shield from under the front end to gain access to the gear. 9. Remove the skid plate. 10. Remove the power steering lines from the gear. 11. Remove the lower coupler bolt and slide the coupler off the gear. 12. Remove the mounting bolts from the gear to the front crossmember. Slide the gear to the right side of the vehicle. Then tilt the left end of the gear down and remove the gear. 13. Adjust the toe position. Fig. Steering gear mounting-2004 4 wheel drive To install: NOTE Before installing the gear inspect bushings and replace if worn or damaged. 1. Install the gear on the front crossmember and tighten the mounting bolts to 200 ft. lbs. (271 Nm). 2. Slide the shaft coupler onto gear. Install a new bolt and tighten to 36 ft. lbs. (49 Nm). 3. Clean the tie rod end studs and knuckle tapers. 4. Install the tie rod ends into the steering knuckles and tighten the nuts to 60 ft. lbs. (81 Nm). 5. Install the power steering lines to steering gear and tighten the hose to 23 ft. lbs. (31 Nm). 6. Install the splash shield. 7. Install the skid plate. 8. Install the front tires. 9. Remove the support and lower the vehicle. 10. Unlock the steering wheel. 11. Fill the system with fluid. Back to Top Suspension Dakota, 2001-2005 Coil Springs Removal & Installation 1. Before servicing the vehicle, refer to the Precautions section. 2. Support the lower control arm on a floor jack. 3. Remove or disconnect the following: Front wheel Shock absorber Stabilizer bar link Lower ball joint. 4. Lower the jack and remove the coil spring. Print Fig. Front suspension components-2001-03 4WD models Fig. Front suspension components-2001-03 2WD models To install: 1. Install the coil spring and raise the control arm into position. 2. Install or connect the following: Lower ball joint. Tighten the nut to 135 ft. lbs. (183 Nm). Stabilizer bar link Shock absorber Front wheel 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support the vehicle. 3. Remove wheel and tire assembly. 4. Remove the stabilizer bar link from the lower suspension arm. 5. Remove the shock absorber. 6. Install a spring compressor up through the lower suspension arm, coil spring and upper shock mounting hole. 7. Tighten the tool lower nut to compress the coil spring. 8. Remove the lower ball joint nut and separate the ball joint from the knuckle. 9. Loosen the spring compressor lower nut to relieve spring tension. 10. Remove the tool and pull down on the lower suspension arm to remove the spring. To install: NOTE The ramped or open end of the coil spring is the bottom of the spring. 1. Tape the isolator pad to the top of the coil spring. Position the spring in the lower suspension arm pocket. Be sure that the coil spring is seated in the pocket. 2. Install a spring compressor up through the lower suspension arm, coil spring upper shock mounting hole. 3. Tighten the tool nut to compress the coil spring. 4. Install the lower ball joint into the knuckle and tighten the nut to 94 ft. lbs. (127 Nm). Install cotter pin. 5. Remove the spring compressor tool. 6. Install the stabilizer bar link to the lower suspension arm and tighten nut to 47 Nm (35 ft. lbs.). 7. Install the shock absorber. 8. Install the wheel and tire assembly. 9. Remove support and lower the vehicle. The front suspension utilizes coil over shock design; the shock absorber and coil spring are removed as a unit. A Branick 7200® or equivalent spring removal/installation tool will be required to service the spring. 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove the shock. 3. Install the shock assembly in the Branick 7200T spring removal/installation tool or equivalent. Fig. Spring/shock assembly (2) mounted in the tool (1) 4. Compress the spring. 5. Position Wrench, Special Tool 9362, or equivalent, on shock shaft retaining nut. Next, insert 8 mm socket though Wrench onto hex located on end of shock shaft. While holding shock shaft from turning, remove nut from shock shaft using Wrench. Fig. Position Wrench, Special Tool 9362 (2), or equivalent, on shock shaft retaining nut (1) 6. Remove the upper shock nut. 7. Remove the shock. 8. Remove the shock upper mounting plate. 9. Remove and inspect the upper and lower spring isolators. To install: 1. Install the lower isolator. 2. Install the upper isolator. 3. Position the shock into the coil spring. 4. Install the upper shock mounting plate. 5. Install Wrench (on end of a torque wrench), Special Tool 9362, on shock shaft retaining nut. Next, insert 8 mm socket though Wrench onto hex located on end of shock shaft. While holding shock shaft from turning, tighten nut using Wrench to 90 Nm (66 ft. lbs.) torque. 6. Install the shock upper mounting nut. 7. Decompress the spring. 8. Remove the shock assembly from the spring compressor tool. 9. Install the shock assembly. Back to Top Dakota, 2001-2005 Control Links Removal & Installation Print Control links are not utilized on 4WD models; the stabilizer end is mounted directly to the lower control arm. 2-Wheel Drive 1. Raise and support the vehicle. 2. Remove the upper link nut, retainer and grommet from each link. 3. Remove the lower link nut from the lower suspension arm on each side. Fig. Typical stabilizer components consist of stabilizer retainer (1), upper link grommets (2), stabilizer link (3) and stabilizer bar (4). To install: 1. Install the lower link retainer and grommet on the links. 2. Install the links into the stabilizer bar and lower suspension arm on each side. 3. Install the lower link mounting nut and tighten to 47 Nm (35 ft. lbs.). NOTE Ensure both link end caps are facing straight forward. 4. Install the upper link grommet, retainer and nut and tighten to 27 ft. lbs. (37 Nm). 5. Remove support and lower vehicle. 1. Raise and support the vehicle. 2. Remove the lower nut. 3. Remove the upper nut, retainers and grommets from the stabilizer bar. 4. Remove the stabilizer link from the vehicle. Fig. 2005 stabilizer with link (1), retainer (2), stabilizer bar (3), lower control arm (4) and lower nut (5). To install: 1. Install the stabilizer link to the vehicle. 2. Install the retainers, grommets and upper nut to the stabilizer bar and tighten to 23 Nm (17 ft. lbs.). 3. Install the lower nut and tighten to 102 Nm (75 ft. lbs.). 4. Remove the support and lower the vehicle. Back to Top Dakota, 2001-2005 Lower Ball Joints Removal & Installation These models utilize a lower control arm with an integral ball joint. If the ball joint is damaged or worn, the lower control arm must be replaced. 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove the tire and wheel assembly. 3. Remove the brake caliper and rotor. 4. Remove the outer tie rod retaining nut from the knuckle. 5. Separate the tie rod from the steering knuckle using special tool C-3894-A. 6. Remove the upper ball joint nut, then separate the upper ball joint from the knuckle using special tool 8677, or equivalent. 7. Remove the lower ball joint nut, then separate the lower ball joint from the steering knuckle using special tool 8677. 8. Remove the steering knuckle. 9. Move the halfshaft to the side and support the halfshaft out of the way (4WD) only. 10. Remove the snapring from the ball joint flange. NOTE Extreme pressure lubrication must be used on the threaded portions of the tool. This will increase the longevity of the tool and insure proper operation during the removal and installation process. 11. Press the ball joint (3) from the lower control arm (4) using special tools C-4212-F (Press) (1), 8445-3 (Driver) (2) and 9604 (Receiver) (5). Fig. Removing the lower ball joint from the control arm To install: Print Fig. Installing the lower ball joint NOTE Extreme pressure lubrication must be used on the threaded portions of the tool. This will increase the longevity of the tool and insure proper operation during the removal and installation process. 1. Install the ball joint (3) into the control arm and press in using special tools C-4212-F (press) (1), 8441-4 (Receiver) (2) and 9654-1 (Driver) (4). 2. Install the snapring around the ball joint flange. 3. Remove the support for the halfshaft and install into position 4X4 only. 4. Install the steering knuckle. 5. Install the tie rod end into the steering knuckle, then install the retaining nut and tighten to 55 ft. lbs. (75 Nm). 6. Install and tighten the halfshaft nut (if equipped) to 251 Nm (185 ft. lbs.). 7. Install the brake caliper and rotor. 8. Install the tire and wheel assembly. 9. Check the vehicle ride height. 10. Perform a wheel alignment. Back to Top Dakota, 2001-2005 Lower Control Arms Bushing Replacement Print The control arm bushings are serviced with the control arm as an assembly. Removal & Installation 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support the vehicle. 3. Remove the wheel and tire assembly. 4. Remove the disc brake caliper assembly. 5. Remove the disc brake rotor. 6. Disconnect the wheel speed sensor at the wheel well. 7. Remove tie rod end jam nut. 8. Disconnect the tie rod from the knuckle using special tool C-3894-A, or equivalent. 9. Remove the front halfshaft nut (4WD). 10. Remove the upper ball joint nut. Separate the upper ball joint from the steering knuckle with a remover. 11. Remove the lower ball joint nut. Separate the lower ball joint from the steering knuckle with a remover. 12. Remove the steering knuckle. 13. Remove the stabilizer bar link 14. Remove the shock absorber lower bolt and nut. 15. Remove the lower control arm bolts, nuts and washers. 16. Remove the lower control arm from the vehicle. Fig. Lower and upper control arm installation-2005 models To install: NOTE All suspension components should be tightened with the weight of the vehicle on them (curb height). 1. Position the lower control arm at the frame rail brackets. Install the pivot bolts washers and nuts. Tighten the nuts finger-tight. WARNING The ball joint stud taper must be CLEAN and DRY before installing the knuckle. Clean the stud taper with mineral spirits to remove dirt and grease. 2. Install the steering knuckle. 3. Insert the lower ball joint into the steering knuckle. Install and tighten the retaining nut to 60 ft. lbs. (81 Nm). 4. Install shock absorber lower bolt and nut. Tighten to 60 ft. lbs. (81 Nm). 5. Install the front halfshaft nut (4WD). 6. Insert the upper ball joint into the steering knuckle. Install and tighten the retaining nut to 55 ft. lbs. (75 Nm). 7. Install the stabilizer bar link and tighten to 169 Nm (125 ft. lbs.). 8. Tighten the lower control arm pivot nut and bolts to 244 Nm (180 ft. lbs.). 9. Insert the outer tie rod end into the steering knuckle. Install and tighten the retaining nut to 55 ft. lbs. (75 Nm). 10. Install the disc brake rotor. 11. Install the disc brake caliper and adaptor assembly and tighten to 135 Nm (100 ft. lbs.). 12. Install the wheel and tire assembly. 13. Remove the support and lower the vehicle. 14. Perform a wheel alignment. 2-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Front wheel Shock absorber Brake caliper and rotor Stabilizer bar link Coil spring Inner mounting bolts Lower control arm To install: Fig. Lower control arm-2002-04 2 wheel drive 1. Install or connect the following: Lower control arm. Tighten the front bolt to 130 ft. lbs. (175 Nm) and the rear bolt to 80 ft. lbs. (108 Nm). Coil spring. Tighten the lower ball joint nut to 94 ft. lbs. (127 Nm). Stabilizer bar link Brake caliper and rotor Shock absorber Front wheel 4-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Front wheel Outer tie rod end Halfshaft Torsion bar Shock absorber Stabilizer bar Lower ball joint Pivot bolts Lower control arm Fig. Lower control arm-2002-04 4 wheel drive To install: 1. Install or connect the following: Lower control arm. Tighten the front pivot bolt to 80 ft. lbs. (108 Nm) and the rear bolt to 140 ft. lbs. (190 Nm). Lower ball joint. Tighten the nut to 135 ft. lbs. (183 Nm). Stabilizer bar Shock absorber Torsion bar Halfshaft Outer tie rod end Front wheel Back to Top Dakota, 2001-2005 Shock Absorbers Removal & Installation 1. Before servicing the vehicle, refer to the Precautions section. 2. Remove or disconnect the following: 3. Install or connect the following: Front wheel Upper mount nut Lower mount bolt Shock absorber To install: 1. Install or connect the following: Shock absorber. Tighten the lower bolt to 100 ft. lbs. (136 Nm) and the upper nut to 30 ft. lbs. (41 Nm). Print Front wheel Fig. Front shock absorber mounting-2001-03 4WD Dakota models Fig. Front shock absorber mounting-2001-03 2WD Dakota models The front suspension utilizes coil over shock design; the shock absorber and coil spring are removed as a unit. A Branick 7200® or equivalent spring removal/installation tool will be required to service the shock. NOTE Before servicing the vehicle, refer to the Precautions section. 1. Raise and support the vehicle. 2. Remove the tire and wheel assembly. 3. Support the lower control arm outboard end. 4. Remove the upper shock nuts. Fig. Remove the upper shock nuts (1)-2005 models 5. Remove the stabilizer link lower nut and then separate the stabilizer link from the lower control arm to gain access to the lower shock nut. 6. Remove the lower shock bolt and nut. Fig. Stabilizer link (1), shock (2), nut (3), lower shock bolt (4), link lower nut (5), lower control arm (6) 7. Remove the shock. To install: NOTE All suspension components should be tightened with the weight of the vehicle on them (curb height). 1. Install the upper part of the shock into the frame bracket. 2. Install the upper nuts. Tighten to 102 Nm (75 ft. lbs.). 3. Install the lower part of the shock into the lower control arm shock bushing. 4. Position shock module clevis to lower control arm. Install bolt so head of bolt is facing rear of vehicle and hand start nut. Tighten the bolt and nut to 60 ft. lbs. (81 Nm). 5. Install the stabilizer link lower nut to the lower control arm. Tighten to 125 ft. lbs. (169 Nm). 6. Remove the support from the lower control arm outboard end. 7. Install the tire and wheel assembly. 8. Remove the support and lower the vehicle. 2-Wheel Drive NOTE Before servicing the vehicle, refer to the Precautions section. 1. Remove the upper shock nut, retainer and grommet from the shock absorber stud. 2. Raise and support the vehicle. 3. Remove the lower mounting bolts and remove shock absorber through the lower suspension arm. Fig. Front shock absorber mounting-2004 2 wheel drive To install: NOTE The upper shock nut must be replaced or use Mopar Lock -N Seal or Loctite® 242 on existing nut. 1. Install the lower retainer (lower retainer is stamped with an L) and grommet on the shock absorber stud and extend the shock. Insert the shock absorber through the lower suspension arm and upper mounting hole. 2. Install the lower mounting bolts and tighten to 28 Nm (21 ft. lbs.). 3. Remove the support and lower the vehicle. 4. Install the upper grommet and retainer (upper retainer is stamped with a U) on the shock absorber stud. Install a new nut or use Mopar Lock -N Seal or Loctite® 242 on the existing nut and tighten to 26 Nm (19 ft. lbs.). 4-Wheel Drive NOTE Before servicing the vehicle, refer to the Precautions section. 1. Raise and support vehicle. 2. Remove the upper shock absorber nut, retainer and grommet. 3. Remove the lower bolt and remove the shock absorber. To install: Fig. Front shock absorber mounting-2004 4 wheel drive NOTE Upper shock nut must be replaced or use Mopar Lock -N Seal or Loctite® 242 on existing nut. 1. Install the lower retainer (lower retainer is stamped with an L) and grommet on the shock absorber stud. Insert the shock absorber through the frame bracket hole. 2. Install the lower bolt and tighten the bolt to 108 Nm (80 ft. lbs.). 3. Install the upper grommet, retainer (upper retainer is stamped with a U) and new nut or use Mopar Lock -N Seal or Loctite® 242 on existing nut, on the shock absorber stud. Tighten nut to 26 Nm (19 ft. lbs.). Back to Top Dakota, 2001-2005 Stabilizer Bar (Sway Bar) & Links Removal & Installation Print 2-Wheel Drive 1. Raise and support the vehicle. 2. Remove the upper link nut, retainer and grommet from each link. 3. Remove the stabilizer bar retainer bolts and remove the retainers and stabilizer bar from the vehicle. 4. Remove the bushings from the stabilizer bar. NOTE If bushings are to be reused, do not cut the old bushings off the stabilizer bar; use a mixture of soapy water to aid in sliding the bushings off the bar. To install: 1. Install the bushings on the stabilizer bar using a mixture of soapy water or equivalent in order to slide the bushing over the bar with ease. WARNING Do not cut the new bushing for installation. 2. Install the stabilizer bar on the frame and install the retainers and the bolts. 3. Tighten the bolts to 45 ft. lbs. (60 Nm). NOTE Ensure the bar is centered with equal spacing on both sides. 4. Install the upper link grommet, retainer and nut and tighten to 27 ft. lbs. (37 Nm). 5. Remove support and lower vehicle. 4-Wheel Drive NOTE To service the stabilizer bar the vehicle must be on a drive on hoist. The vehicle suspension must be at curb height for stabilizer bar installation. 1. Remove the stabilizer bar retainer bolts from the lower suspension arms and remove the retainers. 2. Remove the stabilizer bar retainer nuts, bolts and retainers from the frame crossmember and remove the bar. 3. If necessary, remove the bushings from the stabilizer bar. NOTE If bushings are to be reused, do not cut the old bushings off the stabilizer bar; use a mixture of soapy water to aid in sliding the bushings off the bar. Fig. 4WD stabilizer components comprise lower control arm (1), nut (2), stabilizer bar (3) and retainers (4). To install: NOTE To service the stabilizer bar the vehicle must be on a drive on hoist. The vehicle suspension must be at curb height for stabilizer bar installation. 1. If removed, install the bushings on the stabilizer bar using a mixture of soapy water or equivalent in order to slide the bushing over the bar with ease. WARNING Do not cut the new bushing for installation. 2. Position the stabilizer bar on the frame crossmember brackets and install the retainers and nuts and bolts finger-tight. NOTE Ensure the bar is centered with equal spacing on both sides. 3. Install the stabilizer bar to the lower suspension arm. 4. Install the retainers and bolts to the lower suspension arm and tighten to 34 Nm (25 ft. lbs.). 5. Tighten the frame retainer nuts to 190 Nm (140 ft. lbs.). 6. Tighten the frame retainer bolts to 108 Nm (80 ft. lbs.). Back to Top Dakota, 2001-2005 Steering Knuckle Removal & Installation Print 2-Wheel Drive 1. Raise and support the vehicle. 2. Remove the wheel and tire assembly. 3. Remove disc brake caliper, rotor, shield and ABS speed sensor. 4. Remove tie-rod from steering knuckle arm. 5. Remove the stabilizer link. 6. Remove the hub/bearing. 7. Support the lower suspension arm with a jack stand. 8. Remove the lower ball joint nut and separate the ball joint from the knuckle with Remover C-4150A or equivalent. 9. Remove the upper ball joint nut and separate the ball joint from the knuckle with Remover MB-991113 or equivalent. WARNING When install Remover MB-991113 to separate the ball joint, be careful not to damage the ball joint seal. 10. Remove steering knuckle. To install: 1. Position steering knuckle on upper and lower ball joints and install nuts. Tighten lower nut to 94 ft. lbs. (127 Nm). Tighten upper nut to 60 ft. lbs. (81 Nm) and install new cotter pins. 2. Install the hub/bearing. 3. Remove the lower suspension arm support. 4. Install ABS speed sensor, brake dust shield, rotor and caliper. 5. Install the stabilizer link. 6. Install tie rod to steering knuckle arm. 7. Install the wheel and tire assembly. 8. Remove support and lower the vehicle 4-Wheel Drive 1. Raise and support the vehicle. 2. Remove the wheel and tire assembly. 3. Remove the brake caliper, rotor, shield and ABS wheel speed sensor if equipped. 4. Remove the front halfshaft. 5. Remove the tie rod end nut. Separate the tie rod from the knuckle with Remover C-3894A or equivalent. 6. Support the lower suspension arm with a hydraulic jack and raise the jack to unload the rebound bumper. WARNING When installing Remover MB-991113 to separate the ball joint, be careful not to damage the ball joint seal. 7. Remove the upper ball joint cotter pin and nut. Separate the ball joint from the knuckle with Remover MB-991113 or equivalent. 8. Remove the lower ball joint cotter pin and nut. Separate the ball joint from the knuckle with Remover C-4150A or equivalent and remove the knuckle. 9. Remove the hub/bearing from the steering knuckle. To install; NOTE When installing hub/bearing with ABS brakes, position the speed sensor opening towards the front of the vehicle. 1. Install the hub/bearing to the steering knuckle and tighten the bolts to 166 Nm (123 ft. lbs.). WARNING The ball joint stud tapers must be CLEAN and DRY before installing the knuckle. Clean the stud tapers with mineral spirits to remove dirt and grease. 2. Install the knuckle onto the upper and lower ball joint. 3. Install the upper and lower ball joint nuts. Tighten the upper ball joint nut to 60 ft. lbs. (81 Nm) and the lower ball joint nut to 183 Nm (135 ft. lbs.) then install cotter pins. Grease the lower ball joint. 4. Remove the hydraulic jack from the lower suspension arm. 5. Install the tie rod end and tighten the nut to 88 Nm (65 ft. lbs.). 6. Install the front halfshaft. 7. Install the ABS wheel speed sensor if equipped and brake shield, rotor and caliper. 8. Install the wheel and tire assembly. 9. Remove the support and lower the vehicle. Back to Top Dakota, 2001-2005 Torsion Bar Removal & Installation Print 1. Before servicing the vehicle, please familiarize yourself with safety procedures. NOTE The left and right side torsion bars are NOT interchangeable. The bars are identified and stamped R or L, for right or left. The bars do not have a front or rear end and can be installed with either end facing forward. 2. Raise and support the vehicle with the front suspension hanging. 3. Turn the adjustment bolt counterclockwise to release spring load. NOTE Count and record the number of turns for installation reference. 4. Remove the adjustment bolt from swivel. 5. Remove torsion bar and anchor. Remove anchor from torsion bar. 6. Remove all foreign material from torsion bar mounting in anchor and suspension arm. 7. Inspect adjustment bolt, bearing and swivel for damage. Fig. Torsion bar To install: 1. Insert torsion bar ends into anchor and suspension arm. 2. Position anchor and bearing in frame crossmember. Install adjustment bolt through bearing, anchor and into the swivel. 3. Turn adjustment bolt clockwise the recorded amount of turns. 4. Lower vehicle and adjust the front suspension height. Back to Top Dakota, 2001-2005 Upper Ball Joints Removal & Installation Print The Dakota models utilize an upper control arm with an integral ball joint. If the ball joint is damaged or worn, the upper control arm must be replaced. Back to Top Dakota, 2001-2005 Upper Control Arms Bushing Replacement Print The control arm bushings are serviced with the control arm as an assembly. Removal & Installation 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support vehicle. 3. Remove wheel and tire assembly. 4. Remove the nut from upper ball joint. 5. Separate upper ball joint from the steering knuckle with a ball joint tool. WARNING When installing the tool to separate the ball joint, be careful not to damage the ball joint seal. 6. Remove the wheel speed sensor wire from the retaining brackets to the upper control arm. 7. Remove the control arm pivot bolts and nuts and remove control arm. Fig. Upper control arm mounting, 2005 models. (1) bolts, (2) nuts, (3) brackets, (4) control arm, (5) ABS wheel speed wire, (6) ball joint, (7) knuckle To install: NOTE All suspension components should be tightened with the weight of the vehicle on them (curb height). 1. Position the control arm into the frame brackets. Install bolts and nuts. Tighten to 102 Nm (75 ft. lbs.). 2. Reposition the wheel speed wire into the retaining brackets. 3. Insert ball joint in steering knuckle and tighten ball joint nut to 55 ft. lbs. (75 Nm). 4. Install the wheel and tire assembly. 5. Remove the support and lower vehicle. 6. Perform a wheel alignment. 2-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support the vehicle. 3. Remove wheel and tire assembly. 4. Remove the caliper mounting bolts. 5. Remove brake hose bracket from the arm. 6. Position a hydraulic jack under the arm and raise the jack to unload the rebound bumper. 7. Remove cotter pin and nut from upper ball joint. 8. Separate upper ball joint from steering knuckle. NOTE When installing the remover to separate the ball joint, be careful not to damage the ball joint seal. 9. Remove the control arm pivot bar mounting nuts and remove the control arm. Fig. Upper control arm-2002-04 2 wheel drive To install: NOTE Before installation, insure pivot bar adjustment bolts are in their original location. 1. Position the control arm pivot bar on adjustment bolts. Install nuts and tighten to 210 Nm (155 ft. lbs.). 2. Position steering knuckle on upper ball joint. Tighten the upper ball joint nut to 81 Nm (60 ft. lbs.) and install a new cotter pin. 3. Install the brake hose bracket to the arm. 4. Install the caliper mounting bolts. Tighten the bolts to 30 Nm (22 ft. lbs.). 5. Install the wheel and tire assembly. 6. Remove support and lower vehicle. 7. Align front end to specifications. 4-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support the vehicle. 3. Remove the wheel and tire assembly. 4. Remove the brake hose brackets from the control arm. 5. Position a hydraulic jack under the lower suspension arm and raise the jack to unload the rebound bumper. 6. Remove the shock absorber. 7. Remove the cotter pin and nut from the upper ball joint. 8. Separate the upper ball joint from the steering knuckle. NOTE When installing the remover to separate the ball joint, be careful not to damage the ball joint seal. Fig. Upper control arm-2002-04 4 wheel drive To install: 1. Position the control arm pivot bar on the mounting bracket. Install the bolts and tighten (temporarily) to 136 Nm (100 ft. lbs.). 2. Insert the ball joint in the steering knuckle and tighten the ball joint nut to 60 ft. lbs. (81 Nm) then install a new cotter pin. 3. Install the shock absorber. NOTE The upper shock nut must be replaced or use Mopar Lock -N Seal or Loctite® 242 on the existing nut. 4. Remove the hydraulic jack. 5. Attach the brake hose brackets to the control arm. 6. Tighten the upper control arm pivot bolts to 204 Nm (150 ft. lbs.). 7. Install the wheel and tire assembly. 8. Remove the support and lower the vehicle. 9. Align the front suspension. Back to Top Dakota, 2001-2005 Wheel Bearings Adjustment Print Dakota models utilize a hub/bearing assembly which is not adjustable. Removal & Installation 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Raise and support the vehicle. 3. Remove the wheel and tire assembly. 4. Remove the brake caliper and rotor. 5. Remove the ABS wheel speed sensor if equipped. 6. Remove the halfshaft nut (4WD). NOTE Do not strike the knuckle with a hammer to remove the tie rod end or the ball joint. Damage to the steering knuckle will occur. 7. Pull down on the steering knuckle to separate the halfshaft from the hub/bearing (4WD). 8. Remove the three hub/bearing mounting bolts from the steering knuckle. 9. Slide the hub/bearing out of the steering knuckle. 10. Remove the brake dust shield. Fig. Front hub installation-2005 models To install: 1. Install the brake dust shield. 2. Install the hub/bearing into the steering knuckle and tighten the bolts to 163 Nm (120 ft. lbs.). 3. Install the brake rotor and caliper. 4. Install the ABS wheel speed sensor if equipped. 5. Install the halfshaft nut and tighten to 251 Nm (185 ft. lbs.) (4WD). 6. Install the wheel and tire assembly. 7. Remove the support and lower vehicle. 2-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Front wheel Brake caliper and rotor Spindle nut Hub and bearing assembly Fig. Hub/bearing assembly-2 wheel drive To install: 1. Install or connect the following: Hub and bearing assembly Spindle nut. Tighten the nut to 185 ft. lbs. (251 Nm). Brake caliper and rotor Front wheel 4-Wheel Drive 1. Before servicing the vehicle, please familiarize yourself with safety procedures. 2. Remove or disconnect the following: Front wheel Brake caliper and rotor Hub retainer nut Hub and bearing assembly Fig. Hub/bearing assembly-4 wheel drive To install: 1. Install or connect the following: Hub and bearing assembly. Tighten the bolts to 123 ft. lbs. (166 Nm). Hub retainer nut. Tighten the nut to 180 ft. lbs. (244 Nm). Brake caliper and rotor Front wheel Back to Top Brakes Dakota, 2001-2005 Bleeding the ABS System This is accomplished using the same methods as for the base brake system. Refer to those procedures. Print ABS system bleeding requires conventional bleeding methods plus use of the DRB scan tool. The procedure involves performing a base brake bleeding, followed by use of the scan tool to cycle and bleed the HCU pump and solenoids. A second base brake bleeding procedure is then required to remove any air remaining in the system. 1. Perform base brake bleeding. Refer to the appropriate section. 2. Connect the scan tool to the data link connector beneath the dashboard. 3. Select "Antilock Brakes" followed by "Miscellaneous", then "Bleed Brakes". Follow the instructions displayed until the unit displays "Test Complete", then disconnect the scan tool and proceed. 4. Perform a base brake bleeding a second time. 5. Top up the master cylinder. Back to Top Dakota, 2001-2005 Control Module Removal & Installation NOTE If the CAB is being replaced with a new CAB it must be reprogrammed with the use of a DRB III. 1. Disconnect battery negative cable. 2. Release the CAB harness connector locks, and remove the harness connectors from the CAB. 3. Disconnect the pump motor connector. 4. Remove screws attaching CAB to the HCU. 5. Remove the CAB. Fig. Harness connector locks Print Fig. Pump motor connector Fig. Mounting screw locations To install: 1. Place the CAB onto the HCU. NOTE Insure the CAB seal is in position before installation. 2. Install the mounting screws and tighten to 4-4.7 Nm (36-42 in. lbs.). 3. Connect the pump motor harness. 4. Connect the harnesses to the CAB and lock the connectors. 5. Connect battery. Back to Top Dakota, 2001-2005 Description & Operation The Rear Wheel Antilock Brake System (RWAL) is designed to prevent rear wheel lockup under heavy braking conditions. The main system components are: the RWAL valve, controller (CAB), rear wheel speed sensor mounted on the axle, and exciter ring on the differential. Print When the brakes are applied, hydraulic fluid is routed from the master cylinder's secondary circuit through the combination valve, to the RWAL valve. From there the fluid is routed to the rear brake wheel cylinders. The CAB monitors rear wheel speed through the sensor on the axle. If a wheel is about to lock up, the CAB signals the RWAL valve, which then modulates hydraulic pressure to the rear wheels to prevent lock up. During light brake application, rear wheel deceleration is not sufficient to activate the antilock system. During a normal stop the brake fluid flows without restriction to the rear wheel cylinders to stop the vehicle. The antilock solenoids are inactive. The isolation valve is open and the dump valve is closed allowing normal fluid flow to the rear wheel cylinders. Fig. the exciter ring is located in the differential If the CAB senses impending rear wheel lockup, it will energize the isolation solenoid. This prevents a further increase of driver induced brake pressure to the rear wheels. If this initial action is not enough to prevent rear wheel lock-up, the CAB will momentarily energize a dump solenoid. This opens the dump valve to vent a small amount of isolated rear brake pressure to an accumulator. The action of fluid moving to the accumulator reduces the isolated brake pressure at the wheel cylinders. The dump (pressure venting) cycle is limited to very short time periods (milliseconds). The CAB will pulse the dump valve until the rear wheel deceleration reaches the desired slip rate programmed into the CAB. The system will switch to normal braking once wheel locking tendencies are no longer present. Note that the RWAL system controls both rear wheel brakes simultaneously. Fig. RWAL hydraulic schematic Fig. Controller Antilock Brakes (CAB) module The Four Wheel Antilock Brake System (ABS) is designed to prevent wheel lock-up during braking under virtually any road surface conditions. This allows the driver to retain greater control of the vehicle during braking. The major components of the system are: Controller Antilock Brakes (CAB) Hydraulic Control Unit (HCU) Wheel speed sensors ABS warning light The HCU provides three channel ABS or four channel With Traction Control pressure control to the front and rear brakes. The front brake antilock valve provides two channel pressure control of the front brakes. Each front wheel brake unit is controlled separately. Two solenoid valves are used in each control channel. The rear brake antilock valve controls the rear wheel brakes in tandem. The rear brake valve contains two solenoid valves. The front and rear antilock valves contain electrically operated solenoid valves. The solenoid valves modulate brake fluid apply pressure during antilock braking. The valves are operated by the antilock electronic module. The antilock electrical system is separate from other electrical circuits in the vehicle. A specially programmed electronic control module is used to operate the system components. Some models have Electronic Brake Distribution (EBD) designed into the system that eliminates the combination/proportioning valve. The ABS electronic control module monitors wheel speed sensor inputs continuously while the vehicle is in motion. The module will not activate the ABS system as long as sensor inputs indicate normal braking. Fig. ABS schematic-typical During normal braking, the master cylinder, power booster and wheel brakes units all function as they would in a vehicle without ABS. The solenoid valves are not activated. The wheel speed sensors convert wheel speed into electrical signals. These signals are transmitted to the module for processing and determine wheel lock-up and deceleration rate. When a wheel speed sensor signal indicate the onset of wheel lock-up the ABS braking is activated. The antilock system retards the lockup conditions by modulating fluid apply pressure to the wheel brake units. The pressure is modulated according to wheel speed, degree of lock-up and rate of deceleration. The solenoid valves are cycled continuously to modulate pressure. Solenoid cycle time in antilock mode can be measured in milliseconds. Back to Top Dakota, 2001-2005 Diagnosis & Testing Diagnosis of base brake conditions that are mechanical in nature should be performed first. This includes brake noise, lack of power assist, parking brake, or vehicle vibration during normal braking. Print The RWAL brake system performs several self-tests every time the ignition switch is turned on and the vehicle is driven. The CAB monitors the system inputs and outputs circuits to verify the system is operating properly. If the CAB senses a malfunction in the system it will set a DTC into memory and trigger the warning lamp. Diagnosis of base brake conditions that are mechanical in nature should be performed first. This includes brake noise, lack of power assist, parking brake, or vehicle vibration during normal braking. The static and dynamic checks occur at ignition start up. During the dynamic check, the CAB briefly cycles the pump and solenoids to verify operation. An audible noise may be heard during this self-check. If an ABS component exhibits a fault during initialization, the CAB illuminates the amber warning light and registers a fault code in the memory. Fig. Back to Top Dakota, 2001-2005 Fault Codes Print The red brake warning lamp and amber ABS warning lamp are located in the instrument cluster. The red brake warning lamp is used to alert the driver of a hydraulic fault or that the parking brake is applied. The red brake warning lamp is also used to alert the driver of a problem with the RWAL system. The red brake warning lamp illuminates when a message is sent over the bus to the cluster to illuminate the bulb. A ground is provided when: The parking brake is applied and the parking brake switch is actuated A hydraulic fault has occurred and the pressure differential switch is actuated A RWAL fault has occurred The amber ABS warning lamp is used to alert the driver of an RWAL problem and identify DTCs stored in the CAB memory. If a system fault is detected during the self-test, or at any other time, the control module will illuminate the Antilock indicator lamp and store the fault code in the microprocessor memory. If a fault code is generated, the module will remember the code after the ignition is switched OFF . The microprocessor memory will store and display only one fault code at a time. The stored code can be displayed by grounding the RWAL diagnostic connector and counting the number of flashes on the indicator lamp. To clear the fault code, disconnect the control module connector or disconnect the battery for at least 5 seconds. During system retest, wait 30 seconds to make sure the fault code does not reappear. Fig. RWAL diagnostic trouble codes Back to Top Dakota, 2001-2005 Hydraulic Control Unit The hydraulic control unit (HCU) consists of a valve body, pump, two accumulators and a motor. The assembly is mounted on the driver side inner fender under the hood. Print Removal & Installation 1. Disconnect battery negative cable. 2. Remove the brake lines from HCU. 3. Push the harness connector locks to release the locks, then remove the connectors from the CAB. 4. Remove the nuts that attach the assembly to the mounting bracket. 5. Remove the assembly from the vehicle. Fig. Hydraulic control unit/Controller antilock brake (CAB) assembly showing brake lines (1), electrical connections (2), CAB (3), mounting bracket (4) and mounting nuts (5). To install: 1. Install the antilock assembly into the bracket and tighten bolts to 14-15 Nm (10-12 ft. lbs.). 2. Connect the CAB harnesses. 3. Connect the brake lines to the HCU. Tighten brake line fittings to 19 Nm (170 in. lbs.). 4. Connect battery. 5. Bleed brake system. Back to Top Dakota, 2001-2005 Rear Wheel Anti-Lock Brake System Removal & Installation Print RWAL Valve 1. Remove the RWAL valve harness connector from the controller. 2. Remove the brake lines from the valve. 3. Remove the valve mounting bolt and remove the valve from the bracket. 4. Installation is the reverse of removal. Tighten the mounting bolt to 15-20 ft. lbs. (20-27 Nm). Tighten the brake line fittings to 14 ft. lbs. (19 Nm). Fig. RWAL valve, mounting bolt and brake lines-typical The assembly is located on the drivers side inner fender under the hood. The assembly modulates hydraulic pressure to the rear brakes during a RWAL (Rear Wheel Anti-Lock) stop. Back to Top Dakota, 2001-2005 Wheel Speed Sensor Rotors (Toothed Rings) Removal & Installation Print 1. Remove the differential case from the axle housing. 2. Clamp the differential case in a soft-jaw vise. 3. Remove and discard the ring gear bolts. 4. Tap the ring gear off with a rawhide or plastic mallet. 5. Remove the exciter ring with a soft-faced hammer. To install: 1. Be sure to align the exciter ring tab with the slot in the differential case. 2. Invert the differential case and start two ring gear bolts. This will provide case to ring gear bolt hole alignment. 3. Press the exciter ring onto the differential case using the ring gear as a pilot. 4. Install new ring gear bolts and tighten in a cross pattern to 75 ft. lbs. (102 Nm) for 8 lbs. (180 Nm) for 248 and 267 RBI axles, 220 ft. lbs. (300 Nm) on 286 RBI axles. 1 / 4 in. axles, 115 ft. lbs. (157 Nm) for 9 1 / 4 in. axles, 130 ft. Fig. Removing the exciter ring from the differential case The "tone wheel" works in conjunction with the front wheel speed sensors as part of the ABS. There is one on each wheel. The tone wheel is located on the hub/bearing, on the axle outer stub shaft or inside the hub/bearing housing, depending on model and equipment. This component is not serviceable or removable and if damaged, the assembly of which it is a part must be replaced. Fig. The tone wheel is not replaceable by itself-2WD shown 1. Remove the differential case from the axle housing. 2. Clamp the differential case in a soft-jaw vise. 3. Remove and discard the ring gear bolts. 4. Tap the ring gear off with a rawhide or plastic mallet. 5. Remove the exciter ring with a soft-faced hammer. To install: 1. Be sure to align the exciter ring tab with the slot in the differential case. 2. Invert the differential case and start two ring gear bolts. This will provide case to ring gear bolt hole alignment. 3. Press the exciter ring onto the differential case using the ring gear as a pilot. 1 1 4. Install new ring gear bolts and tighten in a cross pattern to 75 ft. lbs. (102 Nm) for 8 1 / 4 in. axles, 115 ft. lbs. (157 Nm) for 9 1 / 4 in. axles. Back to Top Dakota, 2001-2005 Wheel Speed Sensors Removal & Installation 1. Raise the vehicle. 2. Remove the brake line mounting nut, if fitted, and remove the brake line from the sensor stud. 3. Remove the mounting stud from the sensor and shield. 4. Remove the sensor and shield from the differential housing. 5. Disconnect the wire and remove the sensor. To install: 1. Connect harness to sensor. Be sure the seal is securely in place between the sensor and wiring connector. 2. Install O-ring on sensor if removed. 3. Install sensor on differential; housing, sensor shield, mounting stud. Tighten to 18 ft. lbs. (24 Nm). 4. Install the brake line on the sensor stud and install the nut. 5. Lower the vehicle. Fig. RWAL speed sensor mounting-typical 1. Raise the vehicle. 2. Remove the brake line mounting nut, if fitted, and remove the brake line from the sensor stud. 3. Remove the mounting stud from the sensor and shield. 4. Remove the sensor and shield from the differential housing. 5. Disconnect the wire and remove the sensor. To install: 1. Connect harness to sensor. Be sure the seal is securely in place between the sensor and wiring connector. 2. Install O-ring on sensor if removed. 3. Install sensor on differential; housing, sensor shield, mounting stud. Tighten to 18 ft. lbs. (24 Nm). Print 4. Install the brake line on the sensor stud and install the nut. NOTE Use the original or replacement sensor bolt only. The bolt is special and must not be substituted. 5. Lower the vehicle. 2-Wheel Drive 1. Raise and support the vehicle. 2. Remove the sensor bolt from the steering knuckle and remove the sensor. 3. Disconnect the ABS wheel speed sensor wire and detach the wire from securing clips. To install: 1. Tighten the sensor bolt to 17 ft. lbs. (23 Nm). NOTE Use the original or replacement sensor bolt only. The bolt is special and must not be substituted under any circumstances. 2. The remainder of the procedure is the reverse of removal. Fig. Front wheel sensor location-2WD 4wd Models & 2005 2wd Models 1. Raise and support the vehicle. 2. Remove the wheel. 3. Remove the brake caliper. 4. Remove the rotor. 5. Remove the sensor attaching bolts. 6. Disconnect the wire and remove the sensor from the vehicle. To install: 1. Tighten the bolts to 13 ft. lbs. (18 Nm). NOTE Use the original or replacement sensor bolts only. The bolts are special and must not be substituted under any circumstances. 2. The remainder of the procedure is the reverse of removal. Fig. Front wheel speed sensor installation-4WD, 2005-06 Back to Top Diagnostics Dakota, 2001-2005 2.5L L4 VIN P Auto 1 2.5L L4 VIN P Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 2 Trouble Code: P0152 Print O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0358 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 3 Trouble Code: P0401 Print EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Trouble Code: P0563 Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 4 Trouble Code: P0581 Print Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0751 A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 5 Trouble Code: P0760 Print A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP Sensor VREF circuit open between the Sensor and PCM MAP Sensor ground circuit open between the Sensor and PCM MAP Sensor is damaged or has failed PCM has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 6 Trouble Code: P1495 Print Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Auto 7 Trouble Code: P1782 Print A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 1 2.5L L4 VIN P Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 2 Trouble Code: P0152 Print O2 (B2 S1) Short to Voltage Possible Causes: O2 O2 O2 O2 signal tracking in connector due to wet/oily conditions ground circuit is open heater supply circuit is open signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0358 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 3 Trouble Code: P0401 Print EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Trouble Code: P0563 Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 4 Trouble Code: P0581 Print Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0751 A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 5 Trouble Code: P0760 Print A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 6 Trouble Code: P1495 Print Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Back to Top Dakota, 2001-2005 2.5L L4 VIN P Std 7 Trouble Code: P1782 Print A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 1 3.7L V6 VIN K Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correlation Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: 5-volt supply circuit is open or shorted to ground MAP Sensor signal circuit is shorted to ground or shorted to Sensor ground circuit MAP Sensor has failed PCM 5-volt supply circuit has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted battery voltage or to ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0122 TP Sensor No. 1 Circuit Low Input Possible Causes: TP Sensor sweep Intermittent condition 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor return circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0123 TP Sensor/APPS Circuit High Input Possible Causes: Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Low coolant level Improper thermostat operation or thermostat failure ECT has failed Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Low coolant level Thermostat has failed Signal circuit shorted to battery voltage ECT Sensor has failed or voltage is below 1.0v Signal circuit is open, shorted to ground or shorted to Sensor ground ECT Sensor ground circuit or signal circuit is open PCM has failed Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 return circuit is shorted to ground or to signal circuit O2 signal circuit is shorted to O2 return upstream circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 Sensor (B1 S1) Voltage High Possible Causes: O2 Sensor signal circuit and/or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal or return circuit open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal circuit or upstream circuit has failed O2 element has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or heater control circuit is open O2 heater element has failed PCM has failed Trouble Code: P0137 O2 (B1 S2) Sensor Circuit Low Possible Causes: O2 return circuit is shorted to ground O2 signal circuit is shorted to ground, or to O2 return circuit, or O2 heater ground circuit O2 Sensor has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Sensor Voltage High Condition: Possible Causes: O2 Sensor signal circuit or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal circuit or return circuit open PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak O2 element is contaminated, deteriorated or it has failed O2 signal circuit or return circuit has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has failed O2 heater ground circuit or control circuit is open PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 upstream circuit is shorted to ground O2 signal circuit is shorted to ground or to O2 upstream return circuit O2 signal circuit is shorted to the heater ground circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery voltage. O2 upstream return circuit is open or is shorted to battery voltage O2 Sensor is damaged or has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak O2 signal circuit has an open or grounded condition O2 upstream return circuit has an open or grounded condition O2 element is deteriorated or it has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 2 Trouble Code: P0155 Print O2 (B2 S1) Heater Circuit Possible Causes: O2 heater control circuit is open O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Low Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 is damaged or it has failed PCM has failed Trouble Code: P0158 O2 (B2 S2) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery O2 downstream return circuit is open or is shorted to battery O2 is damaged or it has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Heater Performance Possible Causes: O2 heater control circuit or ground circuit is open O2 Sensor heater element is damaged or has failed PCM has failed Trouble Code: P0171 Fuel System Lean (B1 S1) Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged or fuel pump has failed O2 Sensor has failed O2 signal circuit or return circuit has failed O2 Sensor heater operation is faulty TP Sensor sweep has failed MAP Sensor operation has failed ECT Sensor operation has failed Engine mechanical problem is present Fuel is contaminated Exhaust leak exists Trouble Code: P0172 Fuel System (S1 B1) Rich Possible Causes: O2 Sensor heater or O2 Sensor has failed EVAP purge solenoid failed or improper operation O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair PCM has failed Trouble Code: P0174 Fuel System (S2 B1) Lean Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0175 Fuel System (S2 B1) Rich Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Possible Causes: ASD relay output circuit fault Injector control circuit fault Coil control circuit fault Ignition wiring, coil control circuit or coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module is damaged Fuel pressure leakdown fault Fuel injector damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0301 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0302 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0303 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0304 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0305 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0306 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0307 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0308 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve is open at idle EGR solenoid ground circuit is open EGR solenoid control circuit is open, shorted to ground or to voltage ASD relay power circuit open to the EGR solenoid EGR valve or solenoid is damaged or has failed PCM has failed (EGR open or EGR closed) Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 3 Trouble Code: P0403 Print EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Medium Leak Detected Possible Causes: Intermittent condition Vacuum hoses, connections or switches have come loose or malfunctioned EVAP emission system has a leak EVAP purge solenoid operation has malfunctioned NVLD switch operation has malfunctioned Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid return circuit open or shorted to ground EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP System Small Leak Detected Possible Causes: Fuel tank cap is damaged, loose or the wrong part number Small leak present somewhere in the EVAP system Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensor No. 1 Low Input Possible Causes: Intermittent condition Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged Instrument cluster problem Trouble Code: P0463 Fuel Level Sensor No. 1 High Input Possible Causes: Fuel level sending unit signal circuit is open or is shorted to battery voltage Fuel level Sensor ground circuit is open Fuel level Sensor is damaged or the fuel tank is damaged Instrument cluster is faulty BCM or PCM has failed Trouble Code: P0480 Low Speed (No.1) Fan Control Relay Circuit Possible Causes: Fan relay intermittent condition Ground circuit is open Fused B+ output circuit malfunction Fan relay control circuit is open or shorted to battery voltage or ground Fan relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions Throttle body or linkage is binding, damaged or sticking Intermittent condition PCM has failed Trouble Code: P0507 Idle Speed High Performance Possible Causes: PCV system malfunction Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Air induction system malfunction Throttle body or linkage is binding, damaged or sticking Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: 5v supply circuit is open or is shorted to ground Oil pressure Sensor signal circuit is shorted to ground or to sensor ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Circuit High Possible Causes: Oil pressure Sensor signal circuit is open or shorted to battery voltage or to 5v supply circuit Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is open between the switch and the PCM PSPS ground circuit is open between the switch and ground PSPS is damaged or it has failed PCM has failed Trouble Code: P0562 Battery Voltage Low Input Possible Causes: Resistance in battery positive circuit Resistance in the generator case ground Generator field ground circuit is open or shorted to ground Generator is damaged or it has failed Ground circuit is open PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 Serial Communication Link Malfunction Possible Causes: PCM or SPI failure Trouble Code: P0601 PCM Internal Controller Failure Possible Causes: PCM or SPI failure Trouble Code: P0606 Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch No. 2 Performance Malfunction Possible Causes: Fused B+ circuit malfunction Brake switch output circuit is open or is shorted to battery voltage or to ground Brake switch 1 signal circuit is open Brake switch has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: Related DTCs will be present Transmission temperature Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is open or is shorted to voltage TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 5 Trouble Code: P0714 Print A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 TCM Input Speed Sensor Circuit Malfunction Possible Causes: ISS ground circuit is open or is shorted to voltage ISS signal circuit is open, shorted to ground or to power ISS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0720 TCM Output Speed Sensor Circuit Malfunction Possible Causes: OSS ground circuit is open or is shorted to voltage or to ground Speed Sensor ground circuit is open, shorted to ground or to voltage OSS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM or TCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0740 A/T Torque Converter Clutch System Out of Range Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: Related relay DTCs present Transmission control relay output circuit open L/R solenoid control circuit open or shorted to ground or to voltage L/R solenoid/pressure switch assembly has malfunctioned or failed Intermittent wiring and connectors PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open O/D Solenoid control circuit is open or shorted to ground O/D Solenoid control circuit is shorted to system power O/D Solenoid is damaged or has failed PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: Related DTCs present Loss of Prime P0944 DTC present Transmission control relay output circuit open L/R switch sense circuit is open or is shorted to ground or to voltage L/R pressure switch is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 6 Trouble Code: P1391 Print CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1793 TCM TRD Link Communication Error Possible Causes: Torque Management Request (TMR) sense circuit is open or is shorted to ground or to voltage PCM or TCM has failed Intermittent wiring and connector problems Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 7 Trouble Code: P2100 Print Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2110 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Auto 8 Trouble Code: U0101 Print No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 1 3.7L V6 VIN K Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correlation Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: 5-volt supply circuit is open or shorted to ground MAP Sensor signal circuit is shorted to ground or shorted to Sensor ground circuit MAP Sensor has failed PCM 5-volt supply circuit has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted battery voltage or to ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0122 TP Sensor No. 1 Circuit Low Input Possible Causes: TP Sensor sweep Intermittent condition 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor return circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0123 TP Sensor/APPS Circuit High Input Possible Causes: Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Low coolant level Improper thermostat operation or thermostat failure ECT has failed Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Low coolant level Thermostat has failed Signal circuit shorted to battery voltage ECT Sensor has failed or voltage is below 1.0v Signal circuit is open, shorted to ground or shorted to Sensor ground ECT Sensor ground circuit or signal circuit is open PCM has failed Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 return circuit is shorted to ground or to signal circuit O2 signal circuit is shorted to O2 return upstream circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 Sensor (B1 S1) Voltage High Possible Causes: O2 Sensor signal circuit and/or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal or return circuit open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal circuit or upstream circuit has failed O2 element has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or heater control circuit is open O2 heater element has failed PCM has failed Trouble Code: P0137 O2 (B1 S2) Sensor Circuit Low Possible Causes: O2 return circuit is shorted to ground O2 signal circuit is shorted to ground, or to O2 return circuit, or O2 heater ground circuit O2 Sensor has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Sensor Voltage High Condition: Possible Causes: O2 Sensor signal circuit or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal circuit or return circuit open PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak O2 element is contaminated, deteriorated or it has failed O2 signal circuit or return circuit has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has failed O2 heater ground circuit or control circuit is open PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 upstream circuit is shorted to ground O2 signal circuit is shorted to ground or to O2 upstream return circuit O2 signal circuit is shorted to the heater ground circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery voltage. O2 upstream return circuit is open or is shorted to battery voltage O2 Sensor is damaged or has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak O2 signal circuit has an open or grounded condition O2 upstream return circuit has an open or grounded condition O2 element is deteriorated or it has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 2 Trouble Code: P0155 Print O2 (B2 S1) Heater Circuit Possible Causes: O2 heater control circuit is open O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Low Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 is damaged or it has failed PCM has failed Trouble Code: P0158 O2 (B2 S2) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery O2 downstream return circuit is open or is shorted to battery O2 is damaged or it has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Heater Performance Possible Causes: O2 heater control circuit or ground circuit is open O2 Sensor heater element is damaged or has failed PCM has failed Trouble Code: P0171 Fuel System Lean (B1 S1) Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged or fuel pump has failed O2 Sensor has failed O2 signal circuit or return circuit has failed O2 Sensor heater operation is faulty TP Sensor sweep has failed MAP Sensor operation has failed ECT Sensor operation has failed Engine mechanical problem is present Fuel is contaminated Exhaust leak exists Trouble Code: P0172 Fuel System (S1 B1) Rich Possible Causes: O2 Sensor heater or O2 Sensor has failed EVAP purge solenoid failed or improper operation O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair PCM has failed Trouble Code: P0174 Fuel System (S2 B1) Lean Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0175 Fuel System (S2 B1) Rich Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Possible Causes: ASD relay output circuit fault Injector control circuit fault Coil control circuit fault Ignition wiring, coil control circuit or coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module is damaged Fuel pressure leakdown fault Fuel injector damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0301 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0302 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0303 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0304 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0305 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0306 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0307 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0308 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve is open at idle EGR solenoid ground circuit is open EGR solenoid control circuit is open, shorted to ground or to voltage ASD relay power circuit open to the EGR solenoid EGR valve or solenoid is damaged or has failed PCM has failed (EGR open or EGR closed) Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 3 Trouble Code: P0403 Print EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Medium Leak Detected Possible Causes: Intermittent condition Vacuum hoses, connections or switches have come loose or malfunctioned EVAP emission system has a leak EVAP purge solenoid operation has malfunctioned NVLD switch operation has malfunctioned Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid return circuit open or shorted to ground EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP System Small Leak Detected Possible Causes: Fuel tank cap is damaged, loose or the wrong part number Small leak present somewhere in the EVAP system Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensor No. 1 Low Input Possible Causes: Intermittent condition Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged Instrument cluster problem Trouble Code: P0463 Fuel Level Sensor No. 1 High Input Possible Causes: Fuel level sending unit signal circuit is open or is shorted to battery voltage Fuel level Sensor ground circuit is open Fuel level Sensor is damaged or the fuel tank is damaged Instrument cluster is faulty BCM or PCM has failed Trouble Code: P0480 Low Speed (No.1) Fan Control Relay Circuit Possible Causes: Fan relay intermittent condition Ground circuit is open Fused B+ output circuit malfunction Fan relay control circuit is open or shorted to battery voltage or ground Fan relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions Throttle body or linkage is binding, damaged or sticking Intermittent condition PCM has failed Trouble Code: P0507 Idle Speed High Performance Possible Causes: PCV system malfunction Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Air induction system malfunction Throttle body or linkage is binding, damaged or sticking Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: 5v supply circuit is open or is shorted to ground Oil pressure Sensor signal circuit is shorted to ground or to sensor ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Circuit High Possible Causes: Oil pressure Sensor signal circuit is open or shorted to battery voltage or to 5v supply circuit Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is open between the switch and the PCM PSPS ground circuit is open between the switch and ground PSPS is damaged or it has failed PCM has failed Trouble Code: P0562 Battery Voltage Low Input Possible Causes: Resistance in battery positive circuit Resistance in the generator case ground Generator field ground circuit is open or shorted to ground Generator is damaged or it has failed Ground circuit is open PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C S/C S/C S/C switch switch switch switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring No. 2 signal circuit is open between the clockspring and S/C switch return circuit is open between PCM and clockspring or S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 Serial Communication Link Malfunction Possible Causes: PCM or SPI failure Trouble Code: P0601 PCM Internal Controller Failure Possible Causes: PCM or SPI failure Trouble Code: P0606 Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV MTV MTV MTV PCM solenoid/relay solenoid/relay solenoid/relay solenoid/relay has failed circuit is open or it is shorted to ground circuit is shorted to power ground circuit is open is damaged or it has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch No. 2 Performance Malfunction Possible Causes: Fused B+ circuit malfunction Brake switch output circuit is open or is shorted to battery voltage or to ground Brake switch 1 signal circuit is open Brake switch has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: Related DTCs will be present Transmission temperature Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is open or is shorted to voltage TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 5 Trouble Code: P0714 Print A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 TCM Input Speed Sensor Circuit Malfunction Possible Causes: ISS ground circuit is open or is shorted to voltage ISS signal circuit is open, shorted to ground or to power ISS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0720 TCM Output Speed Sensor Circuit Malfunction Possible Causes: OSS ground circuit is open or is shorted to voltage or to ground Speed Sensor ground circuit is open, shorted to ground or to voltage OSS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM or TCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0740 A/T Torque Converter Clutch System Out of Range Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: Related relay DTCs present Transmission control relay output circuit open L/R solenoid control circuit open or shorted to ground or to voltage L/R solenoid/pressure switch assembly has malfunctioned or failed Intermittent wiring and connectors PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open O/D Solenoid control circuit is open or shorted to ground O/D Solenoid control circuit is shorted to system power O/D Solenoid is damaged or has failed PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: Related DTCs present Loss of Prime P0944 DTC present Transmission control relay output circuit open L/R switch sense circuit is open or is shorted to ground or to voltage L/R pressure switch is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 6 Trouble Code: P1391 Print CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1793 TCM TRD Link Communication Error Possible Causes: Torque Management Request (TMR) sense circuit is open or is shorted to ground or to voltage PCM or TCM has failed Intermittent wiring and connector problems Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 7 Trouble Code: P2100 Print Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2110 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 3.7L V6 VIN K Std 8 Trouble Code: U0101 Print No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 1 3.9L V6 VIN X Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 2 Trouble Code: P0151 Print O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 3 Trouble Code: P0358 Print Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 5 Trouble Code: P0751 Print A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator fan control relay circuit is open or shorted to ground Radiator fan control relay circuit is open (test power to IGN) Radiator fan control relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 6 Trouble Code: P1492 Print Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Auto 7 Print Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick switch ground circuit is open AutoStick AutoStick AutoStick AutoStick AutoStick downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 1 3.9L V6 VIN X Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 2 Trouble Code: P0151 Print O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 3 Trouble Code: P0358 Print Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 5 Trouble Code: P0751 Print A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP Sensor VREF circuit open between the Sensor and PCM MAP Sensor ground circuit open between the Sensor and PCM MAP Sensor is damaged or has failed PCM has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 6 Trouble Code: P1492 Print Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Back to Top Dakota, 2001-2005 3.9L V6 VIN X Std 7 Trouble Code: P1775 Print A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 1 4.7L V8 VIN J Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correlation Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: 5-volt supply circuit is open or shorted to ground MAP Sensor signal circuit is shorted to ground or shorted to Sensor ground circuit MAP Sensor has failed PCM 5-volt supply circuit has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted battery voltage or to ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0122 TP Sensor No. 1 Circuit Low Input Possible Causes: TP Sensor sweep Intermittent condition 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor return circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0123 TP Sensor/APPS Circuit High Input Possible Causes: Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Low coolant level Improper thermostat operation or thermostat failure ECT has failed Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Low coolant level Thermostat has failed Signal circuit shorted to battery voltage ECT Sensor has failed or voltage is below 1.0v Signal circuit is open, shorted to ground or shorted to Sensor ground ECT Sensor ground circuit or signal circuit is open PCM has failed Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 return circuit is shorted to ground or to signal circuit O2 signal circuit is shorted to O2 return upstream circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 Sensor (B1 S1) Voltage High Possible Causes: O2 Sensor signal circuit and/or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal or return circuit open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal circuit or upstream circuit has failed O2 element has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or heater control circuit is open O2 heater element has failed PCM has failed Trouble Code: P0137 O2 (B1 S2) Sensor Circuit Low Possible Causes: O2 return circuit is shorted to ground O2 signal circuit is shorted to ground, or to O2 return circuit, or O2 heater ground circuit O2 Sensor has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Sensor Voltage High Condition: Possible Causes: O2 Sensor signal circuit or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal circuit or return circuit open PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak O2 element is contaminated, deteriorated or it has failed O2 signal circuit or return circuit has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has failed O2 heater ground circuit or control circuit is open PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 upstream circuit is shorted to ground O2 signal circuit is shorted to ground or to O2 upstream return circuit O2 signal circuit is shorted to the heater ground circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery voltage. O2 upstream return circuit is open or is shorted to battery voltage O2 Sensor is damaged or has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak O2 signal circuit has an open or grounded condition O2 upstream return circuit has an open or grounded condition O2 element is deteriorated or it has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 2 Trouble Code: P0155 Print O2 (B2 S1) Heater Circuit Possible Causes: O2 heater control circuit is open O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Low Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 is damaged or it has failed PCM has failed Trouble Code: P0158 O2 (B2 S2) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery O2 downstream return circuit is open or is shorted to battery O2 is damaged or it has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Heater Performance Possible Causes: O2 heater control circuit or ground circuit is open O2 Sensor heater element is damaged or has failed PCM has failed Trouble Code: P0171 Fuel System Lean (B1 S1) Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged or fuel pump has failed O2 Sensor has failed O2 signal circuit or return circuit has failed O2 Sensor heater operation is faulty TP Sensor sweep has failed MAP Sensor operation has failed ECT Sensor operation has failed Engine mechanical problem is present Fuel is contaminated Exhaust leak exists Trouble Code: P0172 Fuel System (S1 B1) Rich Possible Causes: O2 Sensor heater or O2 Sensor has failed EVAP purge solenoid failed or improper operation O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair PCM has failed Trouble Code: P0174 Fuel System (S2 B1) Lean Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0175 Fuel System (S2 B1) Rich Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Possible Causes: ASD relay output circuit fault Injector control circuit fault Coil control circuit fault Ignition wiring, coil control circuit or coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module is damaged Fuel pressure leakdown fault Fuel injector damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0301 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0302 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0303 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0304 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0305 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0306 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0307 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0308 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve is open at idle EGR solenoid ground circuit is open EGR solenoid control circuit is open, shorted to ground or to voltage ASD relay power circuit open to the EGR solenoid EGR valve or solenoid is damaged or has failed PCM has failed (EGR open or EGR closed) Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 3 Trouble Code: P0403 Print EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Medium Leak Detected Possible Causes: Intermittent condition Vacuum hoses, connections or switches have come loose or malfunctioned EVAP emission system has a leak EVAP purge solenoid operation has malfunctioned NVLD switch operation has malfunctioned Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid return circuit open or shorted to ground EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP System Small Leak Detected Possible Causes: Fuel tank cap is damaged, loose or the wrong part number Small leak present somewhere in the EVAP system Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensor No. 1 Low Input Possible Causes: Intermittent condition Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged Instrument cluster problem Trouble Code: P0463 Fuel Level Sensor No. 1 High Input Possible Causes: Fuel level sending unit signal circuit is open or is shorted to battery voltage Fuel level Sensor ground circuit is open Fuel level Sensor is damaged or the fuel tank is damaged Instrument cluster is faulty BCM or PCM has failed Trouble Code: P0480 Low Speed (No.1) Fan Control Relay Circuit Possible Causes: Fan relay intermittent condition Ground circuit is open Fused B+ output circuit malfunction Fan relay control circuit is open or shorted to battery voltage or ground Fan relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions Throttle body or linkage is binding, damaged or sticking Intermittent condition PCM has failed Trouble Code: P0507 Idle Speed High Performance Possible Causes: PCV system malfunction Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Air induction system malfunction Throttle body or linkage is binding, damaged or sticking Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: 5v supply circuit is open or is shorted to ground Oil pressure Sensor signal circuit is shorted to ground or to sensor ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Circuit High Possible Causes: Oil pressure Sensor signal circuit is open or shorted to battery voltage or to 5v supply circuit Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is open between the switch and the PCM PSPS ground circuit is open between the switch and ground PSPS is damaged or it has failed PCM has failed Trouble Code: P0562 Battery Voltage Low Input Possible Causes: Resistance in battery positive circuit Resistance in the generator case ground Generator field ground circuit is open or shorted to ground Generator is damaged or it has failed Ground circuit is open PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 Serial Communication Link Malfunction Possible Causes: PCM or SPI failure Trouble Code: P0601 PCM Internal Controller Failure Possible Causes: PCM or SPI failure Trouble Code: P0606 Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch No. 2 Performance Malfunction Possible Causes: Fused B+ circuit malfunction Brake switch output circuit is open or is shorted to battery voltage or to ground Brake switch 1 signal circuit is open Brake switch has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: Related DTCs will be present Transmission temperature Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is open or is shorted to voltage TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 5 Trouble Code: P0714 Print A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 TCM Input Speed Sensor Circuit Malfunction Possible Causes: ISS ground circuit is open or is shorted to voltage ISS signal circuit is open, shorted to ground or to power ISS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0720 TCM Output Speed Sensor Circuit Malfunction Possible Causes: OSS ground circuit is open or is shorted to voltage or to ground Speed Sensor ground circuit is open, shorted to ground or to voltage OSS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM or TCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0740 A/T Torque Converter Clutch System Out of Range Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: Related relay DTCs present Transmission control relay output circuit open L/R solenoid control circuit open or shorted to ground or to voltage L/R solenoid/pressure switch assembly has malfunctioned or failed Intermittent wiring and connectors PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open O/D Solenoid control circuit is open or shorted to ground O/D Solenoid control circuit is shorted to system power O/D Solenoid is damaged or has failed PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: Related DTCs present Loss of Prime P0944 DTC present Transmission control relay output circuit open L/R switch sense circuit is open or is shorted to ground or to voltage L/R pressure switch is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 6 Trouble Code: P1391 Print CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1793 TCM TRD Link Communication Error Possible Causes: Torque Management Request (TMR) sense circuit is open or is shorted to ground or to voltage PCM or TCM has failed Intermittent wiring and connector problems Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 7 Trouble Code: P2100 Print Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2110 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Auto 8 Trouble Code: U0101 Print No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 1 4.7L V8 VIN J Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correlation Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: 5-volt supply circuit is open or shorted to ground MAP Sensor signal circuit is shorted to ground or shorted to Sensor ground circuit MAP Sensor has failed PCM 5-volt supply circuit has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP Sensor signal circuit is open MAP Sensor ground circuit is open MAP MAP MAP PCM Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted battery voltage or to ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0122 TP Sensor No. 1 Circuit Low Input Possible Causes: TP Sensor sweep Intermittent condition 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor return circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0123 TP Sensor/APPS Circuit High Input Possible Causes: Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Low coolant level Improper thermostat operation or thermostat failure ECT has failed Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Low coolant level Thermostat has failed Signal circuit shorted to battery voltage ECT Sensor has failed or voltage is below 1.0v Signal circuit is open, shorted to ground or shorted to Sensor ground ECT Sensor ground circuit or signal circuit is open PCM has failed Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 return circuit is shorted to ground or to signal circuit O2 signal circuit is shorted to O2 return upstream circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 Sensor (B1 S1) Voltage High Possible Causes: O2 Sensor signal circuit and/or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal or return circuit open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal circuit or upstream circuit has failed O2 element has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or heater control circuit is open O2 heater element has failed PCM has failed Trouble Code: P0137 O2 (B1 S2) Sensor Circuit Low Possible Causes: O2 return circuit is shorted to ground O2 signal circuit is shorted to ground, or to O2 return circuit, or O2 heater ground circuit O2 Sensor has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Sensor Voltage High Condition: Possible Causes: O2 Sensor signal circuit or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal circuit or return circuit open PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak O2 element is contaminated, deteriorated or it has failed O2 signal circuit or return circuit has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has failed O2 heater ground circuit or control circuit is open PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 upstream circuit is shorted to ground O2 signal circuit is shorted to ground or to O2 upstream return circuit O2 signal circuit is shorted to the heater ground circuit O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery voltage. O2 upstream return circuit is open or is shorted to battery voltage O2 Sensor is damaged or has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak O2 signal circuit has an open or grounded condition O2 upstream return circuit has an open or grounded condition O2 element is deteriorated or it has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 2 Trouble Code: P0155 Print O2 (B2 S1) Heater Circuit Possible Causes: O2 heater control circuit is open O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Low Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 is damaged or it has failed PCM has failed Trouble Code: P0158 O2 (B2 S2) Circuit High Possible Causes: O2 signal circuit is open or is shorted to battery O2 downstream return circuit is open or is shorted to battery O2 is damaged or it has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Heater Performance Possible Causes: O2 heater control circuit or ground circuit is open O2 Sensor heater element is damaged or has failed PCM has failed Trouble Code: P0171 Fuel System Lean (B1 S1) Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged or fuel pump has failed O2 Sensor has failed O2 signal circuit or return circuit has failed O2 Sensor heater operation is faulty TP Sensor sweep has failed MAP Sensor operation has failed ECT Sensor operation has failed Engine mechanical problem is present Fuel is contaminated Exhaust leak exists Trouble Code: P0172 Fuel System (S1 B1) Rich Possible Causes: O2 Sensor heater or O2 Sensor has failed EVAP purge solenoid failed or improper operation O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair PCM has failed Trouble Code: P0174 Fuel System (S2 B1) Lean Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0175 Fuel System (S2 B1) Rich Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Possible Causes: ASD relay output circuit fault Injector control circuit fault Coil control circuit fault Ignition wiring, coil control circuit or coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module is damaged Fuel pressure leakdown fault Fuel injector damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0301 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0302 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0303 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0304 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0305 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0306 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0307 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0308 Cylinder 1-8 Misfire Detected Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve is open at idle EGR solenoid ground circuit is open EGR solenoid control circuit is open, shorted to ground or to voltage ASD relay power circuit open to the EGR solenoid EGR valve or solenoid is damaged or has failed PCM has failed (EGR open or EGR closed) Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 3 Trouble Code: P0403 Print EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Medium Leak Detected Possible Causes: Intermittent condition Vacuum hoses, connections or switches have come loose or malfunctioned EVAP emission system has a leak EVAP purge solenoid operation has malfunctioned NVLD switch operation has malfunctioned Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid return circuit open or shorted to ground EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP System Small Leak Detected Possible Causes: Fuel tank cap is damaged, loose or the wrong part number Small leak present somewhere in the EVAP system Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensor No. 1 Low Input Possible Causes: Intermittent condition Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged Instrument cluster problem Trouble Code: P0463 Fuel Level Sensor No. 1 High Input Possible Causes: Fuel level sending unit signal circuit is open or is shorted to battery voltage Fuel level Sensor ground circuit is open Fuel level Sensor is damaged or the fuel tank is damaged Instrument cluster is faulty BCM or PCM has failed Trouble Code: P0480 Low Speed (No.1) Fan Control Relay Circuit Possible Causes: Fan relay intermittent condition Ground circuit is open Fused B+ output circuit malfunction Fan relay control circuit is open or shorted to battery voltage or ground Fan relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions Throttle body or linkage is binding, damaged or sticking Intermittent condition PCM has failed Trouble Code: P0507 Idle Speed High Performance Possible Causes: PCV system malfunction Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Air induction system malfunction Throttle body or linkage is binding, damaged or sticking Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: 5v supply circuit is open or is shorted to ground Oil pressure Sensor signal circuit is shorted to ground or to sensor ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Circuit High Possible Causes: Oil pressure Sensor signal circuit is open or shorted to battery voltage or to 5v supply circuit Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is open between the switch and the PCM PSPS ground circuit is open between the switch and ground PSPS is damaged or it has failed PCM has failed Trouble Code: P0562 Battery Voltage Low Input Possible Causes: Resistance in battery positive circuit Resistance in the generator case ground Generator field ground circuit is open or shorted to ground Generator is damaged or it has failed Ground circuit is open PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 Serial Communication Link Malfunction Possible Causes: PCM or SPI failure Trouble Code: P0601 PCM Internal Controller Failure Possible Causes: PCM or SPI failure Trouble Code: P0606 Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch No. 2 Performance Malfunction Possible Causes: Fused B+ circuit malfunction Brake switch output circuit is open or is shorted to battery voltage or to ground Brake switch 1 signal circuit is open Brake switch has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: Related DTCs will be present Transmission temperature Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: Related DTCs are present TFT Sensor signal circuit is open or is shorted to voltage TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 5 Trouble Code: P0714 Print A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 TCM Input Speed Sensor Circuit Malfunction Possible Causes: ISS ground circuit is open or is shorted to voltage ISS signal circuit is open, shorted to ground or to power ISS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0720 TCM Output Speed Sensor Circuit Malfunction Possible Causes: OSS ground circuit is open or is shorted to voltage or to ground Speed Sensor ground circuit is open, shorted to ground or to voltage OSS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM or TCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0740 A/T Torque Converter Clutch System Out of Range Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: Related relay DTCs present Transmission control relay output circuit open L/R solenoid control circuit open or shorted to ground or to voltage L/R solenoid/pressure switch assembly has malfunctioned or failed Intermittent wiring and connectors PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open O/D Solenoid control circuit is open or shorted to ground O/D Solenoid control circuit is shorted to system power O/D Solenoid is damaged or has failed PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Failure Possible Causes: Related DTCs present Transmission control relay output circuit open U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: Related DTCs present Loss of Prime P0944 DTC present Transmission control relay output circuit open L/R switch sense circuit is open or is shorted to ground or to voltage L/R pressure switch is damaged or has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 6 Trouble Code: P1391 Print CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1793 TCM TRD Link Communication Error Possible Causes: Torque Management Request (TMR) sense circuit is open or is shorted to ground or to voltage PCM or TCM has failed Intermittent wiring and connector problems Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 7 Trouble Code: P2100 Print Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2110 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN J Std 8 Trouble Code: U0101 Print No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 1 4.7L V8 VIN N Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 2 Trouble Code: P0139 Print O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 3 Trouble Code: P0309 Print Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0358 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 4 Trouble Code: P0481 Print High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Trouble Code: P0563 Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 5 Trouble Code: P0606 Print Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0714 A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 6 Trouble Code: P0748 Print A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0751 A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM power supply circuit to direct battery is open TCM power supply circuit to the ignition switch is open TCM power ground circuit is open or the connector is loose TCM has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 7 Trouble Code: P1398 Print Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 8 Trouble Code: P1717 Print Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2100 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Back to Top Dakota, 2001-2005 4.7L V8 VIN N Auto 9 Trouble Code: P2110 Print Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Trouble Code: U0101 No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 1 4.7L V8 VIN N Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0060 Engine Temperature Control A-D Ground Malfunction Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0061 Engine Temperature Control Level 2 RPM Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0062 Engine Temperature Control Level 2 MPH Performance Possible Causes: PCM need to be reprogrammed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage Sensor has failed or it has failed (possible open circuit) Sensor has failed has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 O2 O2 O2 signal tracking (wet/oily) in connector due to short from signal to power circuit signal circuit is open ground circuit is open is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 2 Trouble Code: P0139 Print O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0151 O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0196 Engine Oil Temperature Sensor Circuit Performance Possible Causes: Engine oil temp Engine oil temp Engine oil temp Engine oil temp PCM has failed signal circuit is open or is shorted to ground or to battery voltage Sensor ground circuit is open signal circuit is shorted to Sensor ground Sensor has failed Trouble Code: P0197 Engine Oil Temperature Sensor Circuit Low Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed Trouble Code: P0198 Engine Oil Temperature Sensor Circuit High Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed Trouble Code: P0201 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0202 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0203 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0204 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0205 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0206 Injector 1, 2, 3, 4, 5, or 6 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0207 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0208 Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0221 Throttle Position Sensor No. 2 Performance Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed Trouble Code: P0223 Throttle Position Sensor No. 2 Circuit High Possible Causes: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 3 Trouble Code: P0309 Print Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0330 Knock Sensor No. 2 Circuit Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0358 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0430 Catalyst (2/1) Efficiency Below Normal Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0457 Loose Fuel Cap Condition: Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0461 Fuel Level Sensor No. 1 Malfunction Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 4 Trouble Code: P0481 Print High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0520 Engine Oil Pressure Sensor Out of Range Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0521 Engine Oil Pressure Sensor Does Not Reach Range Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0524 Engine Oil Pressure Low Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Trouble Code: P0563 Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0571 Brake Switch No. 1 No Output Signal Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0572 Brake Switch Signal No. 1 Circuit Low Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed Trouble Code: P0573 Brake Switch No. 1 Stuck High/Off Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0591 Speed Control Switch No. 2 Malfunction Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0592 Speed Control Switch No. 2 Circuit Low Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed Trouble Code: P0593 Speed Control Switch No. 2 Circuit High Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 5 Trouble Code: P0606 Print Engine Control Module Processor Malfunction Possible Causes: PCM has failed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0642 Sensor Reference Voltage 1 Circuit Low Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed Trouble Code: P0643 Sensor Reference Voltage 1 Circuit High Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0652 Sensor Reference Voltage 2 Circuit Low Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed Trouble Code: P0653 Sensor Reference Voltage 2 Circuit High Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0689 ASD Relay Sense Circuit Low Possible Causes: ASD power supply (fused B+) problem ASD relay output circuit is open or is shorted to ground ASD relay has failed PCM has failed Trouble Code: P0690 ASD Relay Sense Circuit High Possible Causes: Intermittent condition ASD relay output circuit is shorted to voltage ASD relay is damaged or it has failed PCM internal short to voltage PCM has failed Trouble Code: P0691 Low Speed Fan (Fan No. 1) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0692 Low Speed Fan (Fan No. 1) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is shorted to battery voltage PCM has failed Trouble Code: P0693 High Speed Fan (Fan No. 2) Relay Control Circuit Low Possible Causes: Intermittent condition Fused ignition switch output circuit problems Radiator fan relay has failed Radiator fan control circuit is open or is shorted to ground PCM has failed Trouble Code: P0694 High Speed Fan (Fan No. 2) Relay Control Circuit High Possible Causes: Intermittent condition Radiator fan relay has failed Radiator fan control circuit is open or shorted to battery voltage PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0706 A/T Check Shifter Signal Circuit Malfunction Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0714 A/T Transmission Fluid Temperature Sensor Intermittent Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 6 Trouble Code: P0748 Print A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0751 A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM power supply circuit to direct battery is open TCM power supply circuit to the ignition switch is open TCM power ground circuit is open or the connector is loose TCM has failed Trouble Code: P0888 A/T Relay Output Malfunction Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0952 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0953 A/T AutoStick Sensor Circuit High Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 7 Trouble Code: P1398 Print Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Trouble Code: P1492 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1501 Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1502 Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation Possible Causes: Other active Bus or Communication DTCs Incorrect tire circumference PCM has failed Trouble Code: P1572 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground Brake switch 2 signal is open Stop lamp switch has failed PCM has failed Trouble Code: P1573 Brake Switch Stuck ON Possible Causes: Brake switch 1 signal is shorted to ground or to voltage Brake switch 2 signal is open or is shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch has failed PCM has failed Trouble Code: P1593 Speed Control Switch Stuck Operation Possible Causes: Intermittent speed control switch 1/2 stuck DTC S/C switches or Steering Column Control Module malfunctioning S/C signal circuit open or shorted ground or to battery voltage S/C switch signal circuit shorted to switch return circuit S/C Sensor ground open PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1618 Primary 5v Sensor Reference Voltage Malfunction Possible Causes: Primary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1628 Auxiliary 5v Sensor Reference Voltage Malfunction Possible Causes: Auxiliary 5v supply circuit open or shorted to ground or to battery voltage 5v Sensor has failed PCM has failed Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 8 Trouble Code: P1717 Print Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Trouble Code: P1775 A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2072 Electronic Throttle Control System Malfunction Possible Causes: Throttle plate frozen Trouble Code: P2074 Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak Possible Causes: Vacuum leak in hoses or component connections High resistance or resistance to ground in MAP 5v supply or signal circuit MAP Sensor has failed High resistance in MAP ground circuit TP Sensor has failed or is improperly adjusted High resistance or resistance to ground in TP Sensor 5v supply or signal circuit High resistance in TP Sensor ground circuit PCM has failed Trouble Code: P2096 Downstream Fuel System 1/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor has failed O2 Sensor signal circuit or return circuit problem Fuel contamination Trouble Code: P2097 Downstream Fuel System 1/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 1/2 has failed O2 Sensor No. 1/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2098 Downstream Fuel System 2/2 Lean Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2099 Downstream Fuel System 2/2 Rich Possible Causes: Exhaust leak Engine mechanical problem O2 Sensor No. 2/2 has failed O2 Sensor No. 2/2 signal circuit or return circuit problem Fuel contamination Trouble Code: P2100 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Intermittent condition Throttle plate or bore may have foreign object blockage ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit ETC negative circuit is open or is shorted to battery voltage or to ground Low battery voltage ETC Motor or Throttle Body has failed PCM has failed Trouble Code: P2101 Electronic Throttle Control Motor Malfunction Possible Causes: Throttle body assembly may have failed Low battery voltage PCM has failed Trouble Code: P2107 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Trouble Code: P2108 Electronic Throttle Control Module Processor Malfunction Possible Causes: PCM requires reprogramming Back to Top Dakota, 2001-2005 4.7L V8 VIN N Std 9 Trouble Code: P2110 Print Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground ETC motor has failed PCM has failed Trouble Code: P2111 Electronic Throttle Control Forced Limited RPM Possible Causes: Throttle plate stuck above Limp Home position TP Sensors 1 & 2 both read 2.5v ETC positive circuit is open or is shorted to ground or to battery voltage ETC negative circuit is open or is shorted to ground PCM has failed Trouble Code: P2112 Electronic Throttle Control Unable To Open Possible Causes: Throttle plate stuck at or below Limp Home position ETC positive circuit is open or is shorted to ground ETC negative circuit is open or is shorted to ground or to battery voltage PCM has failed Trouble Code: P2115 Accelerator Pedal Position Sensor No. 1 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2116 Accelerator Pedal Position Sensor No. 2 Minimum Stop Performance Possible Causes: APP Sensors must be reprogrammed to relearn Trouble Code: P2118 Electronic Throttle Control Motor Circuit Malfunction Possible Causes: Throttle plate or bore malfunctions ETC positive circuit is open or is shorted to ground, battery voltage or ETC negative circuit ETC negative circuit is open or is shorted to ground or to battery voltage ETC motor has malfunctioned PCM has failed Trouble Code: P2122 Accelerator Pedal Position Sensor No. 1 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 1 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2123 Accelerator Pedal Position Sensor No. 1 Circuit High Possible Causes: APP Sensor No. 1 return circuit is open APP Sensor No. 1 signal circuit is shorted to either 5v supply circuit APP Sensor No. 1 has failed PCM has failed Trouble Code: P2127 Accelerator Pedal Position Sensor No. 2 Circuit Low Possible Causes: 5v supply circuit is open or shorted to ground APP Sensor No. 2 signal circuit is open, shorted to ground or to Sensor return circuit APP Sensor No. 2has failed PCM has failed Trouble Code: P2128 Accelerator Pedal Position Sensor No. 2 Circuit High Possible Causes: APP Sensor No. 2 return circuit is open APP Sensor No. 2 signal circuit is shorted to either 5v supply circuit APP Sensor No. 2 has failed PCM has failed Trouble Code: P2135 Throttle Position Sensors 1 & 2 Correlation Possible Causes: TP Sensor No. 1 or 2 signal circuit is shorted to ground or to battery voltage TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit shorted to ground TP Sensor ground circuit has high resistance TP Sensor No. 1 signal circuit is shorted to Sensor No. 2 signal circuit TP Sensor has failed PCM has failed Trouble Code: P2138 Accelerator Pedal Position Sensors 1 & 2 Correlation Possible Causes: APP Sensor No. 1 or 2 signal circuit has high resistance APP Sensor No. 1 or 2 return circuit has high resistance 5v supply circuit has high resistance APP Sensor has failed PCM has failed Trouble Code: P2161 Vehicle Speed Sensor No. 2 Erratic Possible Causes: Active Bus or Communications DTCs Incorrect tire circumference PCM has failed Trouble Code: P2166 Accelerator Pedal Position Sensor No. 1 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2167 Accelerator Pedal Position Sensor No. 2 Maximum Stop Performance Possible Causes: In-Plant test failure APP Sensors must be reprogrammed to relearn Trouble Code: P2172 High Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2173 High Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Vacuum leak 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2174 Low Airflow/Vacuum Leak Detected (Instantaneous Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2175 Low Airflow/Vacuum Leak Detected (Slow Accumulation) Possible Causes: Restricted air inlet system 5v supply circuit has high resistance or is shorted to ground MAP signal circuit has high resistance or is shorted to ground TP Sensor ground circuit has high resistance TP Sensor signal circuit is shorted to ground TP Sensor return circuit has high resistance MAP Sensor has failed TP Sensor has failed PCM has failed Trouble Code: P2181 Cooling System Performance Possible Causes: Low coolant level ECT signal circuit is open or shorted to ground, Sensor ground, or battery voltage ECT Sensor ground circuit is open Thermostat has failed ECT Sensor has failed PCM has failed Trouble Code: P2299 Brake Pedal Position/Accelerator Pedal Position Incompatible Possible Causes: Customer pressing accelerator pedal, then pressing brake pedal and holds both down at the same time Stop lamp switch has failed APP Sensor has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Trouble Code: U0101 No TCM Bus Message Possible Causes: PCI Bus unable to communicate with (DRBIII) scan tool Fused ignition switch output incorrect (off-run-start) Intermittent condition PCM has failed Trouble Code: U0155 No Cluster Bus Message Possible Causes: Communication link with instrument cluster has failed Instrument cluster operation improper or has failed PCM has failed Trouble Code: U0168 No SKIM Bus Message Possible Causes: Intermittent operation PCI Bus circuit open or shorted from PCM to SKIM Loss of communication between PCM and SKIM SKIM or PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 1 5.9L V8 VIN Z Auto Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 2 Trouble Code: P0151 Print O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP CMP CMP CMP CMP Sensor Sensor Sensor Sensor Sensor connector is damaged, open or it is shorted signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit 5v supply circuit is open or shorted to ground or to battery voltage ground circuit is open is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 3 Trouble Code: P0358 Print Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 5 Trouble Code: P0751 Print A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 6 Trouble Code: P1492 Print Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Auto 7 Trouble Code: P1775 Print A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 1 5.9L V8 VIN Z Std Print Trouble Code: P0016 Crankshaft/Camshaft Timing Misalignment Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed Trouble Code: P0031 O2 (B1 S1) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0032 O2 (B1 S1) Heater Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0037 O2 (B1 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0038 O2 (B1 S2) Heater Circuit High Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0051 O2 (B2 S1) Heater Relay Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0052 O2 (B2 S1) Heater Relay Circuit High Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed Trouble Code: P0057 O2 (B2 S2) Heater Circuit Low Possible Causes: O2 assembly is damaged or it has failed O2 heater control circuit is shorted to ground PCM has failed Trouble Code: P0058 O2 (B2 S2) Heater Circuit High Possible Causes: O2 heater control circuit is open or is shorted to battery voltage O2 heater ground circuit is open O2 Sensor has failed PCM has failed Trouble Code: P0068 MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed Trouble Code: P0071 Ambient Temperature Sensor Performance Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0072 Ambient Temperature Sensor Circuit Low Input Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed Trouble Code: P0073 Ambient Temperature Sensor Circuit High Input Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed Trouble Code: P0106 BARO Out-Of-Range at Key On / MAP Sensor Low Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed Trouble Code: P0107 MAP Sensor Circuit Low Input Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed Trouble Code: P0108 MAP Sensor Circuit High Input Possible Causes: MAP MAP MAP MAP PCM Sensor signal circuit is open Sensor ground circuit is open Sensor signal circuit shorted to VREF (5v) Sensor has failed or it has failed (possible open circuit) has failed Trouble Code: P0110 IAT Sensor Circuit High or Low Input Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed Trouble Code: P0111 IAT Sensor Performance Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0112 IAT Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed Trouble Code: P0113 IAT Sensor Circuit High Input Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed Trouble Code: P0116 ECT Sensor Circuit Performance Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P0117 ECT Sensor Circuit Low Input Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed Trouble Code: P0118 ECT Sensor Circuit High Input Possible Causes: ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor signal circuit is open ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed (possible open circuit) PCM has failed Trouble Code: P0121 TP Sensor Does Not Agree With MAP Possible Causes: MAP Sensor and/or TP Sensor VREF (5v) not present MAP or TP Sensor ground circuit has high resistance MAP or TP Sensor signal circuit has high resistance TP Sensor is damaged or has failed PCM has failed Trouble Code: P0122 TP Sensor Circuit Low Input Possible Causes: TP Sensor VREF (5v) circuit is open or shorted to ground TP Sensor 5v supply circuit is shorted to ground TP Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed Possible intermittent condition PCM has failed Trouble Code: P0123 TP Sensor Circuit High Input Possible Causes: TP Sensor sweep TP Sensor ground circuit is open TP Sensor signal circuit is open or is shorted to VREF (5v) TP Sensor is damaged or has failed (an internal open circuit) Possible intermittent condition PCM has failed Trouble Code: P0125 Closed Loop Temperature Not Reached Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0128 Thermostat Rationality Test Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is contaminated, damaged or it has failed Inspect for low coolant level or for an incorrect coolant mixture Trouble Code: P0129 Barometric Pressure Out-Of-Range Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed Trouble Code: P0131 O2 (B1 S1) Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0132 O2 (B1 S1) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed Trouble Code: P0133 O2 (B1 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0134 O2 (B1 S1) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2S signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0135 O2 (B1 S1) Heater Circuit Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0136 O2 (B1 S2) Heater Circuit Low Input Conditions Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed Trouble Code: P0137 O2 (B1 S2) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0138 O2 (B1 S2) Circuit Short to Voltage Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed Trouble Code: P0139 O2 (B1 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance Trouble Code: P0140 O2 (B1 S2) Remains At Center Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P0141 O2 (B1 S2) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 2 Trouble Code: P0151 Print O2 (B2 S1) Circuit Short to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed Trouble Code: P0152 O2 (B2 S1) Short to Voltage Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed Trouble Code: P0153 O2 (B2 S1) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0154 O2 (B2 S1) Remains At Center Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0155 O2 (B2 S1) Heater Circuit Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed Trouble Code: P0157 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed Trouble Code: P0158 O2 (B2 S2) Circuit Shorted to Ground Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed Trouble Code: P0159 O2 (B2 S2) Slow Response Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed Trouble Code: P0161 O2 (B2 S2) Slow Response Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed Trouble Code: P0165 Starter Relay Circuit Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed Trouble Code: P0171 Fuel System Lean (Bank 1) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0172 Fuel System Rich (Bank 1) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed Trouble Code: P0174 Fuel System Lean (Bank 2) Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose Trouble Code: P0175 Fuel System Rich (Bank 2) Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed Trouble Code: P0218 A/T High Temperature Operation Activated Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted Trouble Code: P0300 Multiple Cylinder Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel Trouble Code: P0301 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0302 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0303 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0304 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0305 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0306 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0307 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0308 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0309 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0310 Cylinder 1-10 Misfire Detected Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder Trouble Code: P0315 No Crankshaft Position Sensor Learned Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed Trouble Code: P0320 No Crank Reference Signal to PCM Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0325 Knock Sensor No. 1 Circuit Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0335 Crankshaft Position Sensor Circuit Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed Trouble Code: P0339 Crankshaft Position Sensor Circuit Intermittent Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed Trouble Code: P0340 No Camshaft Position Sensor Circuit Failure Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed Trouble Code: P0344 Camshaft Position Sensor Circuit Intermittent Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed Trouble Code: P0351 Ignition Coil No. 1, 2 or 3 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed Trouble Code: P0352 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0353 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0354 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0355 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0356 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0357 Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 3 Trouble Code: P0358 Print Ignition Coil No. 1-8 Primary Circuit Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed Trouble Code: P0401 EGR System Fault Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code Trouble Code: P0403 EGR Solenoid Circuit Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed Trouble Code: P0404 EGR Position Sensor Signal Performance Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed Trouble Code: P0405 EGR Position Sensor Circuit Low Input Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed Trouble Code: P0406 EGR Position Sensor Circuit High Input Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed Trouble Code: P0420 Catalyst Efficiency Below Normal (Bank 1) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0432 Catalyst Efficiency Fault (Bank 2) Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy) Trouble Code: P0440 EVAP Purge System Fault Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed Trouble Code: P0441 EVAP Purge Flow Monitor Fault Possible Causes: EVAP EVAP EVAP EVAP purge solenoid vacuum line loose, leaking or restricted purge solenoid stuck leaking, stuck open or stuck closed purge vacuum line to canister leaking or disconnected canister leaking, damaged or has failed Trouble Code: P0442 EVAP System Small Leak Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking Trouble Code: P0443 EVAP Purge Solenoid Circuit Fault Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed Trouble Code: P0452 NVLD Pressure Switch Sense Circuit Low Input Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed Trouble Code: P0453 NVLD Pressure Switch Sense Circuit High Input Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed Trouble Code: P0455 EVAP Large Leak Detected Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed Trouble Code: P0456 EVAP Small Leak (0.020") Detected Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking Trouble Code: P0460 Fuel Level Sending No Change Over Miles Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged Trouble Code: P0462 Fuel Level Sensing Unit Low Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0463 Fuel Level Sending Unit High Input Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed Trouble Code: P0480 Low Speed (No. 1) Fan Relay Control Circuit Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed Trouble Code: P0481 High Speed (No. 2) Fan Relay Control Circuit Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed. Trouble Code: P0498 NVLD Canister Vent Solenoid Circuit Low Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0499 NVLD Canister Vent Solenoid Circuit High Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed Trouble Code: P0500 Vehicle Speed Sensor Circuit Fault Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed Trouble Code: P0501 Vehicle Speed Sensor Performance Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed Trouble Code: P0505 Idle Air Control Motor Circuit Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed Trouble Code: P0506 Idle Speed Low Performance Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Trouble Code: P0507 Idle Speed High Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed Trouble Code: P0508 Idle Air Control Motor Sense Circuit Low Input Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed Trouble Code: P0509 Idle Air Control Motor Circuit High Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed Trouble Code: P0513 Invalid SKIM Key Detected Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed Trouble Code: P0516 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0517 Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed Trouble Code: P0519 Idle Air Performance Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Trouble Code: P0522 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0523 Engine Oil Pressure Sensor Rationality Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed Trouble Code: P0532 Air Conditioning Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed Trouble Code: P0533 Air Conditioning Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed Trouble Code: P0551 Power Steering Pressure Switch Circuit Failure Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed Trouble Code: P0562 Battery Sense Circuit Low Input Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 4 Trouble Code: P0563 Print Battery Sense Circuit High Input Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed Trouble Code: P0579 Speed Control Switch No. 1 Performance Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed Trouble Code: P0580 Speed Control Switch No. 1 Circuit Low Input Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed. Trouble Code: P0581 Speed Control Switch No. 1 Circuit High Input Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed Trouble Code: P0582 Speed Control Vacuum Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed Trouble Code: P0586 Speed Control Vent Solenoid Circuit Malfunction Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed Trouble Code: P0594 Speed Control Servo Power Circuit Malfunction Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed Trouble Code: P0600 PCM Internal Failure, No SPI Communications Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed Trouble Code: P0601 PCM Random Access Memory Failure, Self-Test Failed Possible Causes: PCM needs to be replaced, and then reprogrammed Trouble Code: P0604 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0605 TCM Random Access Memory Failure, Self-Test Failed Possible Causes: TCM needs to be replaced, and then reprogrammed Trouble Code: P0622 Generator Field Control Circuit Malfunction Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed Trouble Code: P0627 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay Fuel pump relay Fuel pump relay Fuel pump relay PCM has failed control circuit is open or is shorted to ground control circuit is shorted to system power (B+) power circuit (fused ignition) circuit is open is damaged or it has failed Trouble Code: P0628 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed Trouble Code: P0630 VIN Not Programmed Into The PCM Possible Causes: Reprogram the correct VIN into the PCM PCM has failed Trouble Code: P0632 Odometer Not Programmed Into The PCM Possible Causes: Reprogram the correct mileage into the PCM PCM has failed Trouble Code: P0633 SKIM Key Not Programmed Into The PCM Possible Causes: Reprogram the SKIM key into the PCM PCM has failed Trouble Code: P0645 A/C Clutch Relay Circuit Malfunction Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed Trouble Code: P0660 Manifold Tune Valve Solenoid Circuit Malfunction Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed Trouble Code: P0685 ASD Relay Control Circuit Malfunction Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed Trouble Code: P0688 ASD Relay Sense Circuit Low Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed Trouble Code: P0700 Automatic Transmission Control System Malfunction Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed Trouble Code: P0703 A/T Brake Switch Sense Circuit Malfunction Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed Trouble Code: P0705 A/T Check Shifter Signal Circuit Malfunction Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed Trouble Code: P0711 A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed Trouble Code: P0712 A/T Transmission Fluid Temperature Sensor Low Input Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed Trouble Code: P0713 A/T Transmission Fluid Temperature Sensor High Input Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed Trouble Code: P0715 A/T Input Speed Sensor Circuit Malfunction Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed Trouble Code: P0720 A/T Output Speed Sensor - Low Output Above 15 MPH Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed Trouble Code: P0725 A/T Engine Speed Sensor Circuit Malfunction Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed Trouble Code: P0731 A/T Additional Gear Ratio Error In First Gear Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking) Trouble Code: P0732 A/T Additional Gear Ratio Error In Second Gear Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position Trouble Code: P0733 A/T Additional Gear Ratio Error In Third Gear Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking) Trouble Code: P0734 A/T Additional Gear Ratio Error In Fourth Gear Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear Trouble Code: P0735 A/T Gear Ratio Error Fourth Prime Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present Trouble Code: P0736 A/T Additional Gear Ratio Error In Reverse Gear Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present Trouble Code: P0740 A/T Torque Converter Clutch - No RPM Drop At Lockup Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed Trouble Code: P0743 A/T Torque Converter Clutch Solenoid Circuit Failure Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed Trouble Code: P0748 A/T Governor Pressure Solenoid/Transmission Relay Fault Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed Trouble Code: P0750 A/T Low/Reverse Solenoid Circuit Failure Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 5 Trouble Code: P0751 Print A/T Overdrive Switch Pressed Low For Over 5 Minutes Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed Trouble Code: P0753 A/T 3-4 Solenoid/Transmission Relay Circuit Failure Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed Trouble Code: P0755 A/T 2/4 Solenoid Circuit Failure Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0760 A/T Overdrive Solenoid Circuit Failure Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed Trouble Code: P0765 A/T Underdrive Solenoid Circuit Malfunction Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed Trouble Code: P0783 A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris Trouble Code: P0841 Low/Reverse Pressure Switch Sense Circuit Malfunction Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed Trouble Code: P0845 A/T 2/4 Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0846 A/T 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Trouble Code: P0850 A/T Park/Neutral Switch Performance Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed Trouble Code: P0870 A/T Hydraulic Pressure Line Malfunction Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0871 A/T O/D Pressure Switch Circuit Malfunction Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed Trouble Code: P0884 Power-Up Automatic Transmission Speed Malfunction Possible Causes: TCM TCM TCM TCM power supply circuit to direct battery is open power supply circuit to the ignition switch is open power ground circuit is open or the connector is loose has failed Trouble Code: P0890 A/T TCM Switched Battery Circuit Malfunction Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0891 A/T TCM Relay Always On Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed Trouble Code: P0897 A/T Transmission Fluid Burnt Or Worn Out Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out Trouble Code: P0944 A/T Loss Of Prime Pressure Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist Trouble Code: P0951 A/T AutoStick Sensor Circuit Malfunction Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground Trouble Code: P0992 A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed Trouble Code: P1115 General Temperature Sensor Performance Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed Trouble Code: P1192 Intake Air Temperature Sensor Circuit Low Input Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed Trouble Code: P1193 Intake Air Temperature Sensor Circuit High Input Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed Trouble Code: P1195 O2 (B1 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed Trouble Code: P1196 O2 (B2 S1) Circuit Insufficient Activity Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance Trouble Code: P1281 Engine Is Cold Too Long Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture Trouble Code: P1282 Fuel Pump Relay Control Circuit Malfunction Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed Trouble Code: P1289 Manifold Tuning Valve Control Circuit Malfunction Possible Causes: MTV MTV MTV PCM control circuit is open between the solenoid and PCM control circuit is shorted to Sensor or chassis ground is damaged or has failed has failed Trouble Code: P1294 Target Idle Speed Not Reached Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed Trouble Code: P1296 5-Volt VREF Supply Not Present Possible Causes: MAP MAP MAP PCM Sensor VREF circuit open between the Sensor and PCM Sensor ground circuit open between the Sensor and PCM Sensor is damaged or has failed has failed Trouble Code: P1297 No Change In MAP Signal From Start To Run Transition Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed Trouble Code: P1299 Vacuum Leak Present With IAC Valve Fully Seated Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed Trouble Code: P1388 Auto Shutdown Relay Control Circuit Malfunction Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1389 No Auto Shutdown Relay Output Voltage To PCM Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed Trouble Code: P1390 Timing Belt Skipped One Tooth Or More Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications Trouble Code: P1391 CKP Or CMP Sensor Signal Intermittent Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged Trouble Code: P1398 Misfire Adaptive Numerator At Limit Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged Trouble Code: P1486 EVAP Leak Detection Monitor Pinched Hose Detected Possible Causes: EVAP vapor hose blocked between the fuel tank and the LDP (i.e., in the OLFV, rollover or vapor hose) EVAP canister is clogged or full of dirt or moisture EVAP ventilation solenoid is damaged or has failed Purge line is loose, damaged or incorrectly routed PCM has failed Trouble Code: P1489 High Speed Radiator Fan Relay Circuit Malfunction Possible Causes: HFAN radiator relay control circuit is open or shorted to ground HFAN radiator relay power circuit is open (test power to IGN) HFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1490 Low Speed Radiator Fan Relay Circuit Malfunction Possible Causes: LFAN radiator relay control circuit is open or shorted to ground LFAN radiator relay power circuit is open (test power to IGN) LFAN radiator fan relay is damaged or has failed PCM has failed Trouble Code: P1491 Radiator Fan Control Relay Circuit Malfunction Possible Causes: Radiator Radiator Radiator PCM has fan control relay circuit is open or shorted to ground fan control relay circuit is open (test power to IGN) fan control relay is damaged or has failed failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 6 Trouble Code: P1492 Print Battery Temperature Sensor Circuit High Input Possible Causes: BTS signal circuit is open between the Sensor and the PCM BTS ground circuit is open between the Sensor and the PCM BTS (Sensor) is damaged or the PCM has failed Trouble Code: P1493 Battery Temperature Sensor Circuit Low Input Possible Causes: BTS circuit is shorted to ground between Sensor and the PCM BTS (Sensor) is damaged or has failed PCM has failed Trouble Code: P1494 EVAP Leak Detection Pump Switch Or Mechanical Fault Possible Causes: LDP LDP LDP LDP switch signal circuit is open or shorted to ground switch power circuit is open (test power to Fused Ignition) vacuum hose is clogged, loose or restricted assembly is damaged or has failed (the switch has failed) Trouble Code: P1495 Leak Detection Pump Solenoid Circuit Malfunction Possible Causes: LDP power supply circuit from the ignition switch is open LDP solenoid control circuit is open or shorted to ground LDP assembly is damaged or it has failed PCM has failed Trouble Code: P1496 5-Volt VREF Supply Voltage Too Low Possible Causes: A/C pressure Sensor has failed (a short to ground condition) MAP Sensor has failed (a short to ground condition) TP Sensor has failed (a short to ground condition) PCM has failed Trouble Code: P1498 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1595 Speed Control Solenoid Circuit Failure Possible Causes: S/C power supply circuit is open (test power from Brake switch) S/C vacuum solenoid control circuit open or shorted to ground S/C vent solenoid control circuit is open or shorted to ground S/C vacuum or vent solenoid is damaged or has failed PCM has failed Trouble Code: P1596 Speed Control Switch Continuous High Input Possible Causes: S/C On/Off switch is open S/C switch (MUX switch) is open S/C switch (MUX switch) is shorted to VREF or system power S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1597 Speed Control Switch Continuous Low Input Possible Causes: S/C On/Off switch is shorted to ground S/C switch (MUX switch) is shorted to ground S/C switch (MUX switch) is damaged or has failed PCM has failed Trouble Code: P1598 A/C Pressure Sensor Circuit High Input Possible Causes: A/C pressure Sensor circuit is open or shorted to VREF (5v) A/C pressure Sensor ground circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1599 A/C Pressure Sensor Circuit Low Input Possible Causes: A/C pressure Sensor circuit is shorted to ground A/C pressure Sensor power circuit is open A/C pressure Sensor is damaged or has failed PCM has failed Trouble Code: P1602 PCM Not Programmed Possible Causes: Program the PCM and then retest for this same trouble code PCM has failed Trouble Code: P1603 Powertrain Control Module Internal Dual-Port Ram Communication Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1604 PCM Internal Dual-Port Ram Read/Write Integrity Failure Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1607 Powertrain Control Module Internal Shutdown Timer Rationality Possible Causes: Fused ignition switch output is missing (off-start-run circuit) PCM is damaged or it has an internal failure Trouble Code: P1652 Serial Communication Link Malfunction Possible Causes: TCM cannot communicate with the Instrument Cluster (MIC) TCM cannot communicate with the Powertrain Control Module PCM/TCM is damaged or it has an internal failure Trouble Code: P1682 Charging System Voltage Too Low Possible Causes: Battery positive or Fused Ignition circuit has high resistance Generator drive belt out-of-adjustment or worn out Generator field circuit has a high resistance condition PCM has failed Trouble Code: P1683 Speed Control Relay Or Driver Circuit Malfunction Possible Causes: S/C power supply circuit is open or shorted to ground S/C dump solenoid (servo) is damaged or has failed PCM has failed Trouble Code: P1684 Battery Has Been Disconnected Possible Causes: Quick Learn procedure was performed with scan tool TCM battery direct (B+) circuit is open or disconnected TCM power ground circuit is open PCM/TCM was disconnected or it has been replaced Trouble Code: P1685 Smart Key Immobilizer Module Invalid Key Possible Causes: A theft attempt may have occurred. Obtain the correct key and attempt to start the vehicle Do a PCM Reset function to clear the code after engine startup Trouble Code: P1686 No SKIM Bus Messages Received Possible Causes: Data Bus circuit from MIC to the PCM is damaged or it is open Instrument Cluster is damaged or has failed PCM unable to communicate with the Instrument Cluster PCM has failed Trouble Code: P1687 No Cluster Bus Messages Possible Causes: Data Bus circuit from SKIM to PCM is damaged or it is open PCM unable to communicate with the Body Control Module PCM has failed, or the SKIM is damaged or has failed Trouble Code: P1694 No PCM Bus Messages Possible Causes: Data Bus circuit connector is damaged, open or it is shorted Data Bus circuit to the PCM is damaged or it is open PCM unable to communicate with the body control module Intermittent wiring or connector problems exist PCM has failed Trouble Code: P1695 No BCM Bus Messages Possible Causes: Data Bus circuit from BCM to the PCM is damaged or it is open BCM is damaged or has failed TCM unable to communicate with the TCM TCM has failed Trouble Code: P1696 PCM EEPROM Write Operation Denied/Invalid Possible Causes: DRB DRB DRB PCM or scan tool displays a "write" failure occurred or scan tool displays "write" refused a second time or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer) has failed Trouble Code: P1697 PCM Failure (EMR/SRI Mileage Not Stored) Possible Causes: Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it. Trouble Code: P1698 No CCD Messages Received From The TCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power TCM or the PCM has failed Trouble Code: P1716 Bus Communication Failure With The PCM Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage TCM or the PCM has failed Trouble Code: P1717 Bus Communication Failure With The MIC Possible Causes: CCD data Bus circuit is open, shorted to ground or to power Extremely low battery (system) voltage MIC or the TCM has failed Trouble Code: P1738 A/T High Temperature Operation Activated Possible Causes: Engine Cooling Fan System is not operating properly Engine cooling fan has failed ATF oil level is too high (overfilled) Transmission oil cooler capacity too low, or cooler is plugged TCM or the PCM has failed Trouble Code: P1739 A/T Power Up Circuit At Speed Possible Causes: Fused Ignition power circuit is open between TCM and PCM TCM Power UP circuit is open (test power from PDC or Fuse) TCM Power UP circuit is grounded (test power from PDC or TCM or the PCM has failed Trouble Code: P1740 TCM Internal Malfunction Possible Causes: ATF fluid is burnt, contaminated or contains excessive debris A/T cooler flow restriction or problems in the oil pump shaft Internal transmission problem (O/D clutch seals or valve body) Overdrive clutch or TCC clutch is damaged or has failed Transmission valve body is leaking, damaged or has failed Trouble Code: P1756 A/T Governor Pressure Not Equal To Target At 15-20 PSI Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1757 A/T Governor Pressure Above 3 PSI In Gear At 0 MPH Possible Causes: Check for the presence of other A/T related trouble codes Governor pressure Sensor is damaged or has failed Governor pressure Sensor VREF (5v) circuit is open or shorted Transmission valve body is leaking, damaged or has failed PCM has failed Trouble Code: P1762 A/T Governor Pressure Sensor Offset Volts Too High/Low Possible Causes: Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor ground circuit is open P/N switch is damaged or has failed (not operating properly) Transmission fluid has excessive debris or it is contaminated PCM has failed Trouble Code: P1763 A/T Governor Pressure Sensor Signal Too High Possible Causes: Governor pressure Sensor signal circuit is open Governor pressure Sensor ground circuit is open Governor pressure Sensor signal circuit is shorted to VREF Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1764 A/T Governor Pressure Sensor Signal Too Low Possible Causes: Governor pressure Sensor signal circuit is shorted to ground Governor pressure Sensor VREF (5v) circuit is open Governor pressure Sensor is damaged or has failed Transmission harness solenoid circuit has a problem PCM has failed Trouble Code: P1765 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1767 A/T Transmission Relay Circuit Malfunction Possible Causes: Generator power source circuit to relay control circuit is open Transmission relay power circuit is open (check fuse in PCC) Transmission control circuit is open or shorted to ground Transmission relay is damaged or has failed PCM has failed Trouble Code: P1768 A/T Transmission Relay Output Always Off Possible Causes: 2/4 or L/R Solenoid control circuit is open O/D or U/D Solenoid control circuit is open Transmission control relay power circuit is open to Fused B+ Transmission control relay is damaged (contacts have failed) TCM has failed Back to Top Dakota, 2001-2005 5.9L V8 VIN Z Std 7 Trouble Code: P1775 Print A/T Solenoid Switch Latched In TCC Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems Extremely low battery (system) voltage L/R Solenoid pressure switch circuit is open or switch has failed Transmission solenoid pack is damaged or has failed Transmission control relay circuit is shorted to L/R solenoid Valve body engine idle too high Valve body solenoid switch stuck in "lockup" position PCM has failed Trouble Code: P1776 A/T Solenoid Switch Latched In Low/Reverse Position Possible Causes: Related DTC P0841 may be present. Intermittent wiring or connector problems L/R pressure switch sense circuit is open, shorted to ground or to voltage Extremely low battery (system) voltage Transmission pan has debris caused by valve body damage Transmission internal problems, SSV sticking, or valve body damage PCM has failed Trouble Code: P1781 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: O/D pressure switch circuit is open or shorted to ground O/D pressure switch circuit is shorted to the TCR solenoid pack O/D pressure switch is damaged or has failed O/D solenoid is damaged or has failed Transmission seals are damaged or have failed Trouble Code: P1782 A/T Overdrive Pressure Switch Circuit Malfunction Possible Causes: 2/4 line pressure is too high 2/4 pressure switch is open or shorted to ground Solenoid pack is damaged or has failed Transmission has internal problems or has failed Valve body torque is out of specification Trouble Code: P1784 A/T Additional L/R Pressure Switch Circuit Malfunction Possible Causes: L/R pressure switch circuit open, shorted to ground or to power L/R solenoid switch valve is stuck in "lockup" position L/R solenoid is damaged or has failed Solenoid pack is damaged or has failed (causing this code) Valve body bolt torque is out of specification Trouble Code: P1788 A/T Additional 2/4 Pressure Switch Circuit Malfunction Possible Causes: 2/4 pressure switch circuit is open or shorted to ground 2/4 pressure switch circuit is shorted to TCR output circuit 2/4 solenoid is damaged or has failed Trouble Code: P1789 A/T Overdrive/2/4 Pressure Switch Circuit Malfunction Possible Causes: Extremely low battery (system) voltage 2/4 pressure switch circuit is open or shorted to ground O/D pressure switch circuit is open or shorted to ground Trouble Code: P1790 A/T Malfunction Immediately After Shift Event Possible Causes: Transmission internal mechanical problem Trouble Code: P1791 A/T Loss Of Prime Malfunction Possible Causes: ATF cooler lines damaged or leaking ATF fluid level incorrect or filled with debris Customer complains of "no drive" condition Oil pump pressure drop occurs with "no drive" condition Transmission filter clogged or restricted Trouble Code: P1792 Battery Was Disconnected Possible Causes: Battery direct power (B+) circuit is open (test power to PDC) Battery direct power (B+) circuit is shorted to ground (test fuse) Battery was discharged to a low voltage state or disconnected scan tool "quick learn" for quick disconnect function performed Trouble Code: P1793 Torque Management Request Circuit Malfunction Possible Causes: Extremely low battery (system) voltage Torque management request circuit is open, shorted to ground or shorted to system power (i.e., the TRD circuit has failed) or the TCM has failed Trouble Code: P1794 A/T Speed Sensor Ground Circuit Malfunction Possible Causes: Extremely low battery (system) voltage TCM "reset" function has just been performed Trouble Code: P1795 Transmission Control Module Internal Malfunction Possible Causes: Extremely low battery (system) voltage Engine "starts" since set counter less than three (3) Trouble Code: P1796 A/T Additional AutoStick Input Circuit Malfunction Possible Causes: AutoStick AutoStick AutoStick AutoStick AutoStick AutoStick switch ground circuit is open downshift switch is stuck in open or closed position downshift Sensor circuit is open or shorted to ground switch power circuit is open (test power at Fused B+) Upshift switch is stuck in open or closed position Upshift switch Sensor is open or shorted to ground Trouble Code: P1797 A/T Manual Shift Overheat Malfunction Possible Causes: ATF fluid level too high (transmission may be overfilled) Engine Cooling System or engine cooling fan malfunction Excessive drive time in low gear, or aggressive drive patterns Transmission oil cooler is clogged or restricted Trouble Code: P1798 A/T Transmission Fluid Is Burnt Or Contaminated Possible Causes: ATF is burnt, contaminated or very dirty Extremely low battery (system) voltage Transmission pan has debris Transmission has internal damage causing the vehicle shudder Trouble Code: P1799 A/T Calculated Oil Temperature In Use Malfunction Possible Causes: TFT Sensor signal circuit is open TFT Sensor ground circuit is open TFT Sensor signal circuit is shorted to ground TFT Sensor signal circuit is shorted to VREF (5v) TFT Sensor signal not correct for the ATF fluid temperature Speed Sensor signal circuit is open or shorted to ground Speed Sensor signal circuit is shorted to system power TCM oil temperature Sensor high or low circuit has failed Trouble Code: P1899 A/T Park Neutral Switch Stuck in Park Position or In Gear Possible Causes: P/N switch signal circuit is open between the switch and PCM P/N switch signal circuit is shorted to Sensor or chassis ground P/N switch ground circuit is open (at the switch mounting point) P/N switch is stuck in P/N position, or stuck in Drive position P/N switch is damaged or has failed PCM has failed Trouble Code: P2302 Ignition Coil No. 1 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 1 spark plug or wire is damaged or it has failed Ignition Coil No. 1 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2305 Ignition Coil No. 2 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 2 spark plug or wire is damaged or it has failed Ignition Coil No. 2 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2308 Ignition Coil No. 3 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 3 spark plug or wire is damaged or it has failed Ignition Coil No. 3 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2311 Ignition Coil No. 4 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 4 spark plug or wire is damaged or it has failed Ignition Coil No. 4 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2314 Ignition Coil No. 5 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 5 spark plug or wire is damaged or it has failed Ignition Coil No. 5 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2317 Ignition Coil No. 6 Secondary Circuit Insufficient Ionization Possible Causes: Intermittent condition Cylinder No. 6 spark plug or wire is damaged or it has failed Ignition Coil No. 6 is damaged or it has failed Ignition coil control circuit is open or shorted to ground ASD relay output circuit problems PCM has failed Trouble Code: P2320 Ignition Coil No. 7 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 7 spark plug or wire is damaged or it has failed Ignition Coil No. 7 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2323 Ignition Coil No. 8 Secondary Circuit Insufficient Ionization Possible Causes: Cylinder No. 8 spark plug or wire is damaged or it has failed Ignition Coil No. 8 is damaged or it has failed Ignition coil control circuit is open or shorted to ground PCM has failed Trouble Code: P2503 Charging System Voltage Low Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed Trouble Code: P2700 A/T L/R Inadequate Element Volume Detected Possible Causes: L/R volume clutch index is too low TCM L/R volume clutch circuit is damaged or has failed Trouble Code: P2701 A/T 2C Inadequate Element Volume Detected Possible Causes: 2C volume clutch index is too low TCM 2C volume clutch circuit is damaged or has failed Trouble Code: P2702 A/T O/D Inadequate Element Volume Detected Possible Causes: O/D volume clutch index is too low TCM O/D volume clutch circuit is damaged or has failed Trouble Code: P2703 A/T U/D Inadequate Element Volume Detected Possible Causes: U/D volume clutch index is too low TCM U/D volume clutch circuit is damaged or has failed Trouble Code: P2704 A/T 4C Inadequate Element Volume Detected Possible Causes: 4C volume clutch index is too low TCM 4C volume clutch circuit is damaged or has failed Trouble Code: P2706 A/T MS Solenoid Circuit Malfunction Possible Causes: Check for a loose connector to the MS solenoid (intermittent) MS solenoid control circuit is open or shorted to ground MS solenoid control circuit is shorted to system power (B+) MS solenoid is damaged or it has failed Transmission control relay output supply circuit is open TCM MS solenoid circuit is damaged or it has failed Back to Top Engine & Vehicle Identification Dakota, 2001-2005 Engine & Model Year Identification Print ENGINE AND VEHICLE IDENTIFICATION Code P K X N J Z 2.5 3.7 3.9 4.7 4.7 5.9 Liters (cc) (2507) (3701) (3916) (4701) (4701) (5899) Cu. In. 153 226 238 287 287 360 Cyl. 4 6 6 8 8 8 Fuel Sys. Engine Type SMFI MFI SMFI SMFI SMFI SMFI End. Mfg. Chrysler Chrysler Chrysler Chrysler Chrysler Chrysler OHV SOHC OHV SOHC SOHC OHV Code - Year 1 2001 1 OHV: Overhead Valve - 8th position of VIN - 10th position of VIN 2 3 ENGINE AND VEHICLE IDENTIFICATION Code - Liters (cc) (2507) (3701) (3916) (4701) P K X N 2.5 3.7 3.9 4.7 J Z 4.7 (4701) 5.9 (5899) 153 226 238 287 Cu. In. 4 6 6 8 Cyl. SMFI MFI SMFI SMFI Fuel Sys. OHV SOHC OHV SOHC Engine Type End. Mfg. Chrysler Chrysler Chrysler Chrysler 287 360 8 8 SMFI SMFI SOHC OHV Chrysler Chrysler Code - Year 2 2002 1 OHV: Overhead Valve - 8th position of VIN 3 - 10th position of VIN 2 ENGINE AND VEHICLE IDENTIFICATION Code P K X N J Z 2.5 3.7 3.9 4.7 4.7 5.9 Liters (cc) (2507) (3701) (3916) (4701) (4701) (5899) Cu. In. 153 226 238 287 287 360 Cyl. 4 6 6 8 8 8 Fuel Sys. Engine Type SMFI MFI SMFI SMFI SMFI SMFI Code 3 1 OHV: Overhead Valve - 8th position of VIN 2 3 End. Mfg. Chrysler Chrysler Chrysler Chrysler Chrysler Chrysler OHV SOHC OHV SOHC SOHC OHV Year 2003 3 - 10th position of VIN ENGINE AND VEHICLE IDENTIFICATION Code P K X N J Z 2.5 3.7 3.9 4.7 4.7 5.9 Liters (cc) (2507) (3701) (3916) (4701) (4701) (5899) Cu. In. 153 226 238 287 287 360 Cyl. 4 6 6 8 8 8 Fuel Sys. Engine Type SMFI MFI SMFI SMFI SMFI SMFI End. Mfg. Chrysler Chrysler Chrysler Chrysler Chrysler Chrysler OHV SOHC OHV SOHC SOHC OHV Code - Year 4 2004 1 OHV: Overhead Valve - 8th position of VIN - 10th position of VIN 2 3 ENGINE AND VEHICLE IDENTIFICATION Code P K X N J Z 2.5 3.7 3.9 4.7 4.7 5.9 Liters (cc) (2507) (3701) (3916) (4701) (4701) (5899) Cu. In. 153 226 238 287 287 360 Cyl. 4 6 6 8 8 8 Fuel Sys. Engine Type SMFI MFI SMFI SMFI SMFI SMFI Code 5 End. Mfg. Chrysler Chrysler Chrysler Chrysler Chrysler Chrysler OHV SOHC OHV SOHC SOHC OHV Year 2005 1 OHV: Overhead Valve - 8th position of VIN - 10th position of VIN 2 3 Back to Top Heating & Air Conditioning Dakota, 2001-2005 Removal & Installation Print 1. Disconnect and isolate the negative battery cable. 2. Disconnect the wire harness connector from the blend door actuator. 3. Remove the two screws that secure the blend door actuator to the HVAC distribution housing. 4. Remove the blend door actuator from the distribution housing. Fig. HVAC housing (2) with location of blend door actuator (1), harness (3) and mounting screws (4) -2001-04. To install: 1. Position the blend door actuator onto the HVAC housing. If necessary, rotate the actuator slightly to align the splines on the actuator output sleeve with those on the blend door linkage. 2. Install the screws that secure the blend door actuator to the HVAC housing. Tighten the screws to 2 Nm (17 in. lbs.). 3. Connect the HVAC wire harness connector to the blend door actuator. 4. Reconnect the negative battery cable. NOTE The blend door actuator cannot be adjusted or repaired and, if damaged or faulty, must be replaced. After installation the new actuator must be calibrated using a scan tool. 1. Disconnect and isolate the negative battery cable. 2. Remove the instrument panel. 3. Remove the three screws that secure the blend door actuator to the top of the HVAC housing. 4. Disconnect the HVAC wire harness connector (4) from the blend door actuator. 5. Remove the blend door actuator from the HVAC housing. Fig. On 2005 models the Blend Door Actuator (2) is mounted with screws (1) on TOP of the HVAC housing (3). Harness location is shown at (4). To install: 1. Position the blend door actuator onto the top of the HVAC housing. If necessary, rotate the actuator slightly to align the splines on the actuator output shaft with those on the blend-air door linkage. 2. Install the three screws that secure the blend door actuator to the HVAC housing. Tighten the screws to 2 Nm (17 in. lbs.). 3. Connect the HVAC wire harness connector to the blend door actuator. 4. Install the instrument panel. 5. Reconnect the negative battery cable. 6. Calibrate the actuator using a scan tool. Disconnect and isolate the battery negative cable before beginning any airbag system component diagnosis, testing, removal, or installation procedures. Allow system capacitor to discharge for two minutes before beginning any component service. This will disable the airbag system. Failure to disable the airbag system may result in accidental airbag deployment, personal injury, or death. Back to Top Wiring Diagrams Dakota, 2001-2005 Air Bag (Supplemental Restraint System) (2001) 1 Print Fig. Airbag Control Module, Page 01 (2001) Fig. Airbag Control Module, Page 02 (2001) Fig. Airbag Control Module, Page 03 (2001) Fig. Clockspring (2001) Fig. Data Link Connector (2001) Fig. Diagnostic Junction Port (2001) Fig. Driver Airbag (2001) Fig. Driver Seat BeltTensioner (2001) Fig. Fuse 20 (JB), Page 01 (2001) Fig. Fuse 20 (JB), Page 02 (2001) Fig. Fuse 21 (JB) (2001) Fig. G201 (2001) Fig. Junction Block, Page 01 (2001) Fig. Junction Block, Page 02 (2001) Fig. Passenger Airbag (2001) Back to Top Dakota, 2001-2005 Air Bag (Supplemental Restraint System) (2001) 2 Print Fig. Passenger Airbag On/Off Switch (2001) Fig. Passenger Seat BeltTensioner (2001) Back to Top