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OBDII Error Codes
Everything pertaining to OBDII diagnostics and error code reading and troubleshooting.
109 Cummins articles in this category
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DTC P0238: MAP SENSOR VOLTAGE TOO HIGH Monitor & Set Conditions Manifold Air Pressure (MAP) sensor voltage is monitored when engine speed is greater than 400 RPM but less than 3520 RPM and battery voltage is greater than 10.4 volts. DTC may be stored if Engine Control Module (ECM) senses MAP sensor signal voltage is greater than 4.88 volts at engine start-up or with engine running for 2 seconds.
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DTC P0251: FUEL INJECTION PUMP MECHANICAL FAILURE FUEL VALVE FEEDBACK CIRCUIT Monitor & Set Conditions The fuel injection pump mechanical failure fuel valve feedback circuit is monitored when the ignition is on. DTC may be stored when Engine Control Module (ECM) senses fuel command is within predetermined parameters, fuel pump battery voltage exists and fuel delivery valve solenoid is energized with greater than 9 volts.&
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DTC P0252: FUEL VALVE SIGNAL MISSING Monitor & Set Conditions Fuel injection pump fuel valve circuit is monitored after current feedback monitoring is complete and average engine speed is greater than 700 RPM. DTC may be stored when Engine Control Module (ECM) does not receive a signal from the solenoid valve to indicate valve movement. Possible Causes Fuel Injection
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DTC P0253: FUEL INJECTION PUMP FUEL VALVE OPEN CIRCUIT Monitor & Set Conditions Fuel injection pump fuel valve open circuit is monitored when the ignition is on. DTC may be stored when Engine Control Module (ECM) senses engine speed is greater than 100 RPM and low current or no current is detected at fuel metering valve. Possible Causes Wiring Connector Problem
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DTC P0254: FUEL INJECTION PUMP FUEL VALVE CURRENT TOO HIGH 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC P0254: FUEL INJECTION PUMP FUEL VALVE CURRENT TOO HIGH does not exist, go to next step. If DTC P0254: FUEL INJECTION PUMP FUEL VALVE CURRENT TOO HIGH exists, replace fuel injection pump. Perform TEST VER-2A . 2. Turn ignition on with engine off. Using scan tool, clear DTCs. Start engine and a
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DTC P0320: NO CRANK REFERENCE SIGNAL AT PCM 1. Start engine and allow engine to idle. Using scan tool, read engine speed at PCM. Compare engine speed displayed on scan tool with engine speed on tachometer. If engine speed on scan tool is not within 100 RPM of engine speed on tachometer, go to next step. If engine speed on scan tool is within 100 RPM of engine speed on tachometer, DTC is inactive at this time. Shut engine off. Inspect ECM and PCM for dam
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DTC P0336: CRANKSHAFT POSITION (CKP) SENSOR SIGNAL 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to step 4 . 2. Ensure ignition is on with engine off. Using scan tool, check for DTCs. Check that displayed DTC matches the FREEZE FRAME DTC. If DTCs di
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DTC P0341: CAMSHAFT POSITION SENSOR SIGNAL MISSING Monitor & Set Conditions Camshaft Position Sensor (CMP) sensor signal is monitored when engine is running. DTC may be stored when CMP sensor does not deliver an engine speed or position signal to Engine Control Module (ECM). Possible Causes DTC Equal To Freeze Frame High Resistance In Groun
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DTC P0342: CAMSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO LOW Monitor & Set Conditions Camshaft Position Sensor (CMP) sensor supply voltage is monitored when ignition is on. DTC may be stored when CMP sensor 5-volt supply voltage is less than 4.2 volts for 2 seconds. Possible Causes 5-volt Supply Circuit Short To Ground Wiring Or Connectors
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DTC P0343: CAMSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO HIGH Monitor & Set Conditions Camshaft Position Sensor (CMP) sensor supply voltage is monitored when ignition is on. DTC may be stored when CMP sensor supply voltage is greater than 5.5 volts for 2 seconds. Possible Causes Intermittent Wiring Problem 5-volt Supply Circuit Shorted To Vol
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DTC P0370: FUEL INJECTION PUMP SPEED/POSITION SENSOR SIGNAL LOST Monitor & Set Conditions Fuel injection pump speed/position sensor signal is monitored continuously. DTC may be stored when fuel injection pump can't control engine. Possible Causes Fuel injection pump Testing 1. Turn ignition on with engine off. Usi
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DTC P0380: INTAKE AIR HEATER RELAY #1 CONTROL CIRCUIT Monitor & Set Conditions Intake air heater relay No. 1 control circuit is monitored with ignition on. DTC may be stored if Engine Control Module (ECM) does not detect that intake air heater turned on within one second of ignition being turned on. Possible Causes DTC Equal To Freeze Frame
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DTC P0381: WAIT TO START LAMP INOPERATIVE Monitor & Set Conditions WAIT-TO-START light is monitored when ignition is on. DTC may be stored when WAIT-TO-START light does not come on within 2 seconds after ignition is turned on. Possible Causes WAIT-TO-START Light Stays On All The Time WAIT-TO-START Light Driver Circuit Shorted To Ground
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DTC P0382: INTAKE AIR HEATER RELAY #2 CONTROL CIRCUIT Monitor & Set Conditions Intake air heater relay No. 2 control circuit is monitored during the first second that ignition is turned on. DTC may be stored if Engine Control Module (ECM) does not sense that intake air heater relay turned on. Possible Causes DTC Equal To Freeze Frame Intake
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DTC P0387: CRANKSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO LOW 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to step 4 . 2. Ensure ignition is on with engine off. Using scan tool, check for DTCs. Check that displayed DTC matches the FREEZE FRAME DTC.
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DTC P0388: CRANKSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO HIGH 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to step 4 . 2. Ensure ignition is on with engine off. Using scan tool, check for DTCs. Check that displayed DTC matches the FREEZE FRAME DTC.
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DTC P0388: CRANKSHAFT POSITION SENSOR SUPPLY VOLTAGE TOO HIGH 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to step 4 . 2. Ensure ignition is on with engine off. Using scan tool, check for DTCs. Check that displayed DTC matches the FREEZE FRAME DTC.
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DTC P0460: FUEL LEVEL UNIT NO CHANGE OVER MILES Remove fuel tank. Remove fuel pump module from fuel tank. Fuel pump module is located on top of fuel tank and contains fuel level sensor along with fuel supply and return line fittings. Fuel pump module may also be referred to as fuel tank module. Inspect fuel tank for damage or obstructions which would cause problems with operation of fuel level sensor. If fuel tank is not damaged or obstructed, replace f
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DTC P0461: FUEL LEVEL UNIT NO CHANGE OVER TIME Remove fuel tank. Remove fuel pump module from fuel tank. Fuel pump module is located on top of fuel tank and contains fuel level sensor along with fuel supply and return line fittings. Fuel pump module may also be referred to as fuel tank module. Inspect fuel tank for damage or obstructions which would cause problems with operation of fuel level sensor. If fuel tank is not damaged or obstructed, replace fu
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DTC P0462: FUEL LEVEL SENDING UNIT VOLTS TOO LOW 1. Turn ignition on with engine off. Using scan tool, read fuel level sensor voltage. If fuel level sensor voltage is less than .4 volt, go to next step. If fuel level sensor voltage is .4 volt or more, go to step 5 . 2. Turn ignition off. Disconnect fuel pump module connector. Fuel pump module is located on top of fuel tank and contains fuel level sensor along with fuel supply
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DTC P0463: FUEL LEVEL SENDING UNIT VOLTS TOO HIGH 1. Turn ignition on with engine off. Using scan tool, read fuel level sensor voltage. If fuel level sensor voltage is more than 9.4 volts, go to next step. If fuel level sensor voltage is 9.4 volts or less, go to step 5 . 2. Turn ignition off. Disconnect fuel pump module connector. Fuel pump module is located on top of fuel tank and contains fuel level sensor along with fuel s
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DTC P0500: NO VEHICLE SPEED SENSOR SIGNAL 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC SPECIFIC GOOD TRIP counter is displayed and equal to zero, go to next step. If DTC SPECIFIC GOOD TRIP counter is not displayed and equal to zero, go to step 7 . 2. Using scan tool, check CAB module for DTCs. See appropriate ANTI-LOCK article in BRAKES. If no CAB module DTCs exist, go to next step. If any CAB
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DTC P0501: VEHICLE SPEED SIGNAL RATIONALITY Monitor & Set Conditions Vehicle Speed Sensor (VSS) signal is monitored when no VSS DTCs or Chrysler Collision Detection (CCD) errors are set. DTC may be stored when CCD vehicle speed indicates greater than 20 MPH for 2 seconds, ECM vehicle speed indicates less than 10 MPH and PCM does not receive a VSS signal from Controller Anti-Lock Brake (CAB) module.
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DTC P0521: OIL PRESSURE RATIONALITY Monitor & Set Conditions Oil pressure rationality is monitored with ignition on and engine off. DTC may set if oil pressure is seen with no RPM signal for 30 seconds. Possible Causes Oil Pressure Switch Oil Pressure Signal Circuit Open Oil Pressure Signal Circuit Shorted To Ground
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DTC P0522: OIL PRESSURE VOLTAGE TOO LOW 1. Turn ignition on with engine off. Using scan tool, check for DTCs. If DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW does not exist, go to next step. If DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW exists, perform DTC P1488: AUXILIARY 5 VOLT OUTPUT TOO LOW test. 2. Using scan tool, recheck for any other DTCs. If no other DTCs exist, go to next step. If any other DTCs exist, repair all exis
