ECD SYSTEM DIAGNOSTIC TROUBLE CODE CHART
Tech Tips
Parameters listed in the chart may be different from your readings depending on the type of instruments and other factors.
If any DTCs are displayed during a check mode, check the circuit for the DTCs listed in the chart below. For details of each DTC, refer to the page indicated.
| DTC Code | Detection Item | Trouble Area | MIL | Memory | See page |
|---|---|---|---|---|---|
| P0045 | Turbocharger / Supercharger Boost Control Solenoid Circuit / Open | - Open or short in VN turbo actuator circuit - Turbocharger sub-assembly - Turbocharger actuator (built into turbocharger sub-assembly) - ECM |
Comes on | DTC stored | |
| P0087 | Fuel Rail / System Pressure - Too Low | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor (built into common rail assembly) - ECM |
Comes on | DTC stored | |
| P0088 | Fuel Rail / System Pressure - Too High | - Injection or supply pump assembly (suction control valve) - Open or short in injection or supply pump assembly (suction control valve) circuit - Common rail assembly - ECM |
Comes on | DTC stored | |
| P0093 | Fuel System Leak Detected - Large Leak | - Fuel leak (injection or supply pump assembly to common rail assembly to injector assembly) - Injector assembly - Injection or supply pump assembly (suction control valve) - Wire harness and connector - Common rail assembly - ECM |
Comes on | DTC stored | |
| P0095 | Intake Air Temperature Sensor 2 Circuit | - Open or short in intake air temperature sensor (after turbocharged) circuit - Intake air temperature sensor (after turbocharged) - ECM |
Blinking* | DTC stored | |
| P0096 | Intake Air Temperature Sensor 2 Circuit Range / Performance | Intake air temperature sensor | Blinking* | DTC stored | |
| P0097 | Intake Air Temperature Sensor 2 Circuit Low | - Open or short in intake air temperature sensor (after turbocharged) circuit - Intake air temperature sensor (after turbocharged) - ECM |
Blinking* | DTC stored | |
| P0098 | Intake Air Temperature Sensor 2 Circuit High | - Open or short in intake air temperature sensor (after turbocharged) circuit - Intake air temperature sensor (after turbocharged) - ECM |
Blinking* | DTC stored | |
| P0100 | Mass or Volume Air Flow Circuit | - Open or short in mass air flow meter sub-assembly circuit - Mass air flow meter sub-assembly - ECM |
Blinking* | DTC stored | |
| P0101 | Mass Air Flow Circuit Range / Performance Problem | Mass air flow meter sub-assembly | Blinking* | DTC stored | |
| P0102 | Mass or Volume Air Flow Circuit Low Input | - Open or short in mass air flow meter sub-assembly circuit - Mass air flow meter sub-assembly - ECM |
Blinking* | DTC stored | |
| P0103 | Mass or Volume Air Flow Circuit High Input | - Open or short in mass air flow meter sub-assembly circuit - Mass air flow meter sub-assembly - ECM |
Blinking* | DTC stored | |
| P0105 | Manifold Absolute Pressure / Barometric Pressure Circuit | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - ECM |
Blinking* | DTC stored | |
| P0106 | Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem | Manifold absolute pressure sensor | Blinking* | DTC stored | |
| P0107 | Manifold Absolute Pressure / Barometric Pressure Circuit Low Input | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - ECM |
Blinking* | DTC stored | |
| P0108 | Manifold Absolute Pressure / Barometric Pressure Circuit High Input | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - ECM |
Blinking* | DTC stored | |
| P0110 | Intake Air Temperature Circuit | - Open or short in intake air temperature sensor circuit - Intake air temperature sensor (built into mass air flow meter sub-assembly) - ECM |
Comes on | DTC stored | |
| P0112 | Intake Air Temperature Circuit Low Input | - Open or short in intake air temperature sensor circuit - Intake air temperature sensor (built into mass air flow meter sub-assembly) - ECM |
Comes on | DTC stored | |
| P0113 | Intake Air Temperature Circuit High Input | - Open or short in intake air temperature sensor circuit - Intake air temperature sensor (built into mass air flow meter sub-assembly) - ECM |
Comes on | DTC stored | |
| P0115 | Engine Coolant Temperature Circuit | - Open or short in engine coolant temperature sensor circuit - Engine coolant temperature sensor - ECM |
Comes on | DTC stored | |
| P0116 | Engine Coolant Temperature Circuit Range / Performance Problem | Engine coolant temperature sensor | Comes on | DTC stored | |
| P0117 | Engine Coolant Temperature Circuit Low Input | - Open or short in engine coolant temperature sensor circuit - Engine coolant temperature sensor - ECM |
Comes on | DTC stored | |
| P0118 | Engine Coolant Temperature Circuit High Input | - Open or short in engine coolant temperature sensor circuit - Engine coolant temperature sensor - ECM |
Comes on | DTC stored | |
| P0120 | Throttle / Pedal Position Sensor / Switch "A" Circuit | - Open or short in throttle position sensor circuit - Throttle position sensor (built into diesel throttle body assembly) - ECM |
Comes on | DTC stored | |
| P0122 | Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input | - Open in throttle position sensor circuit - Throttle position sensor (built into diesel throttle body assembly) - ECM |
Comes on | DTC stored | |
| P0123 | Throttle / Pedal Position Sensor / Switch "A" Circuit High Input | - Short in throttle position sensor circuit - Throttle position sensor (built into diesel throttle body assembly) - ECM |
Comes on | DTC stored | |
| P0168 | Fuel Temperature Too High | Fuel cooler | Comes on | DTC stored | |
| P0180 | Fuel Temperature Sensor "A" Circuit | - Open or short in fuel temperature sensor circuit - Fuel temperature sensor (built into injection or supply pump assembly) - ECM |
Comes on | DTC stored | |
| P0182 | Fuel Temperature Sensor "A" Circuit Low Input | - Open or short in fuel temperature sensor circuit - Fuel temperature sensor (built into injection or supply pump assembly) - ECM |
Comes on | DTC stored | |
| P0183 | Fuel Temperature Sensor "A" Circuit High Input | - Open or short in fuel temperature sensor circuit - Fuel temperature sensor (built into injection or supply pump assembly) - ECM |
Comes on | DTC stored | |
| P0190 | Fuel Rail Pressure Sensor Circuit | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor (built into common rail assembly) - ECM |
Comes on | DTC stored | |
| P0192 | Fuel Rail Pressure Sensor Circuit Low Input | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor (built into common rail assembly) - ECM |
Comes on | DTC stored | |
| P0193 | Fuel Rail Pressure Sensor Circuit High Input | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor (built into common rail assembly) - ECM |
Comes on | DTC stored | |
| P0200 | Injector Circuit / Open | - Open or short in injector driver assembly circuit - Injector assembly - Injector driver assembly - ECM |
Comes on | DTC stored | |
| P0234 | Turbocharger / Supercharger Overboost Condition | - Open or short in VN turbo control circuit - Turbocharger sub-assembly - Turbocharger actuator (built into turbocharger sub-assembly) - EGR valve assembly - Mass air flow meter sub-assembly - Manifold absolute pressure sensor - Vacuum hose - Exhaust system is clogged - ECM |
Comes on | DTC stored | |
| P0263 | Cylinder 1 Contribution / Balance | - Open or short in injector driver assembly circuit - Injector assembly - Injector driver assembly - ECM - Compression |
Comes on | DTC stored | |
| P0266 | Cylinder 2 Contribution / Balance | - Open or short in injector driver assembly circuit - Injector assembly - Injector driver assembly - ECM - Compression |
Comes on | DTC stored | |
| P0269 | Cylinder 3 Contribution / Balance | - Open or short in injector driver assembly circuit - Injector assembly - Injector driver assembly - ECM - Compression |
Comes on | DTC stored | |
| P0272 | Cylinder 4 Contribution / Balance | - Open or short in injector driver assembly circuit - Injector assembly - Injector driver assembly - ECM - Compression |
Comes on | DTC stored | |
| P0299 | Turbocharger / Supercharger Underboost | - Open or short in VN turbo control circuit - Turbocharger sub-assembly - Turbocharger actuator (built into turbocharger sub-assembly) - EGR valve assembly - Mass air flow meter sub-assembly - Manifold absolute pressure sensor - Exhaust system and intake system are modified or clogged - ECM |
Comes on | DTC stored | |
| P0335 | Crankshaft Position Sensor "A" Circuit | - Open or short in crankshaft position sensor circuit - Crankshaft position sensor - Crankshaft angle sensor plate - ECM |
Comes on | DTC stored | |
| P0339 | Crankshaft Position Sensor "A" Circuit Intermittent | - Open or short in crankshaft position sensor circuit - Crankshaft position sensor - Crankshaft angle sensor plate - ECM |
Does not come on | DTC stored | |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) | - Open or short in camshaft position sensor circuit - Camshaft position sensor - Camshaft (camshaft drive gear) - ECM |
Comes on | DTC stored | |
| P0405 | Exhaust Gas Recirculation Sensor "A" Circuit Low | - Open in EGR valve position sensor circuit - EGR valve assembly - ECM |
Blinking* | DTC stored | |
| P0406 | Exhaust Gas Recirculation Sensor "A" Circuit High | - Short in EGR valve position sensor circuit - EGR valve assembly - ECM |
Blinking* | DTC stored | |
| P0488 | Exhaust Gas Recirculation Throttle Position Control Range / Performance | - Open or short in throttle control motor circuit - Throttle control motor (built into diesel throttle body assembly) - ECM |
Comes on | DTC stored | |
| P0500 | Vehicle Speed Sensor "A" | - Open or short in vehicle speed sensor circuit - Vehicle speed sensor - Combination meter assembly - ECM |
Comes on | DTC stored | |
| P0504 | Brake Switch "A" / "B" Correlation | - Short in stop light switch signal circuit - Stop light switch assembly - ECM |
Does not come on | DTC stored | |
| P0544 | Exhaust GAS Temperature Sensor Circuit (Bank 1 Sensor 1) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 1) circuit - Exhaust gas temperature sensor (bank 1 sensor 1) - ECM |
Comes on | DTC stored | |
| P0545 | Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 1) circuit - Exhaust gas temperature sensor (bank 1 sensor 1) - ECM |
Comes on | DTC stored | |
| P0546 | Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 1) circuit - Exhaust gas temperature sensor (bank 1 sensor 1) - ECM |
Comes on | DTC stored | |
| P0560 | System Voltage | - Open in back-up power source circuit - Low battery voltage - Voltage converter sub-assembly - ECM |
Comes on | DTC stored | |
| P0606 | ECM / PCM Processor | ECM | Does not come on | DTC stored | |
| P0607 | Control Module Performance | ECM | Comes on | DTC stored | |
| P0617 | Starter Relay Circuit High | - Starter signal circuit - Ignition switch assembly - ECM |
Comes on | DTC stored | |
| P0627 | Fuel Pump Control Circuit / Open | - Injection or supply pump assembly (suction control valve) - Open or short in injection or supply pump assembly (suction control valve) circuit - Common rail assembly - ECM |
Comes on | DTC stored | |
| P0630 | VIN not Programmed or Mismatch - ECM / PCM | ECM | Comes on | DTC stored | |
| P1229 | Fuel Pump System | - Injection or supply pump assembly (suction control valve) - Open or short in injection or supply pump assembly (suction control valve) circuit - Common rail assembly - ECM |
Comes on | DTC stored | |
| P1238 | Injector Malfunction | Main: - Injector assembly - Injector driver assembly (P0200 is set simultaneously) - Open or short in engine wire harness (P0200 is set simultaneously) - Connector connection (P0200 is set simultaneously) - Compression pressure Related: - Valve timing - ECM |
Comes on | DTC stored | |
| P1251 | Turbocharger / Supercharger Overboost Condition (Too High) | - Open or short in VN turbo control circuit - Turbocharger sub-assembly - Turbocharger actuator (built into turbocharger sub-assembly) - EGR valve assembly - ECM |
Comes on | DTC stored | |
| P1425 | Differential Pressure Sensor Circuit | - Open or short in differential pressure sensor assembly circuit - Incorrect differential pressure sensor assembly hose routing - Differential pressure sensor assembly - ECM |
Comes on | DTC stored | |
| P1426 | Differential Pressure Sensor Installation Error | - Incorrect arrangement of differential pressure sensor hose piping - Differential pressure sensor vacuum hose is clogged - Blockage in center exhaust pipe assembly (vacuum transmitting pipe) - Differential pressure sensor assembly - ECM |
Comes on | DTC stored | |
| P1427 | Differential Pressure Sensor Circuit Low | - Open or short in differential pressure sensor assembly circuit - Incorrect differential pressure sensor assembly hose routing - Differential pressure sensor assembly - ECM |
Comes on | DTC stored | |
| P1428 | Differential Pressure Sensor Circuit High | - Open or short in differential pressure sensor assembly circuit - Incorrect differential pressure sensor assembly hose routing - Differential pressure sensor assembly - ECM |
Comes on | DTC stored | |
| P1530 | Engine Emergency Halt Switch | - Emergency halt switch circuit - Emergency halt switch - ECM |
Does not come on | DTC stored | |
| P1601 | Injector Correction Circuit Malfunction (EEPROM) | - Injector compensation code - ECM |
Comes on | DTC stored | |
| P1611 | IC Circuit Malfunction | ECM | Comes on | DTC stored | |
| P1674 | Solenoid for Exhaust Brake Circuit Malfunction | - Open or short in exhaust brake solenoid circuit - Exhaust brake with bracket solenoid assembly - ECM |
Comes on | DTC stored | |
| P2002 | Particulate Trap Efficiency Below Threshold (Bank1) | - Exhaust gas temperature sensor - Differential pressure sensor assembly - Center exhaust pipe assembly (DPF catalyst converter) - Open or short in differential pressure sensor assembly circuit - Open or short in exhaust gas temperature sensor circuit - ECM |
Comes on | DTC stored | |
| P2031 | Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 2) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 2) circuit - Exhaust gas temperature sensor (bank 1 sensor 2) - ECM |
Comes on | DTC stored | |
| P2032 | Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 2) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 2) circuit - Exhaust gas temperature sensor (bank 1 sensor 2) - ECM |
Comes on | DTC stored | |
| P2033 | Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 2) | - Open or short in exhaust gas temperature sensor (bank 1 sensor 2) circuit - Exhaust gas temperature sensor (bank 1 sensor 2) - ECM |
Comes on | DTC stored | |
| P2120 | Throttle / Pedal Position Sensor / Switch "D" Circuit | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2121 | Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2122 | Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2123 | Throttle / Pedal Position Sensor / Switch "D" Circuit High Input | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2125 | Throttle / Pedal Position Sensor / Switch "E" Circuit | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2127 | Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2128 | Throttle / Pedal Position Sensor / Switch "E" Circuit High Input | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2138 | Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation | - Open or short in accelerator pedal position sensor circuit - Accelerator pedal position sensor (built into accelerator link assembly) - ECM |
Comes on | DTC stored | |
| P2226 | Barometric Pressure Circuit | ECM | Comes on | DTC stored | |
| P2227 | Barometric Pressure Circuit Range / Performance | ECM | Comes on | DTC stored | |
| P2228 | Barometric Pressure Circuit Low Input | ECM | Comes on | DTC stored | |
| P2229 | Barometric Pressure Circuit High Input | ECM | Comes on | DTC stored | |
| P2BAB | NOx Exceedance - Incorrect EGR Flow | - EGR valve assembly stuck - EGR valve assembly does not move smoothly - EGR valve assembly deposit - EGR valve assembly passage deposit - EGR cooler sub-assembly - Air intake system (leaks or blockages) - Exhaust gas leaks |
Blinking* | DTC stored | |
| P2BAC | NOx Exceedance - Deactivation of EGR | - EGR valve assembly stuck - Open or short in EGR valve assembly circuit - EGR valve assembly - EGR cooler sub-assembly |
Blinking* | DTC stored | |
| U1123 | Lost Communication with Variable Nozzle Type Turbo Charger Module | - Open or short in turbo actuator circuit - Turbocharger sub-assembly - CAN communication system - ECM |
Comes on | DTC stored |
Tech Tips
*: If the MIL is blinking, the DTC cannot be cleared using the tester.