Tech Tips
Parameters listed in the chart may be different than your readings depending on the type of instrument and other factors. If any DTCs are displayed during a check mode DTC check, check the circuit for the DTCs listed in the table below. For details of each DTC, refer to the page indicated.
| DTC Code | Detection Item | Trouble Area | MIL | Memory | See page |
|---|---|---|---|---|---|
| P0046 | Turbocharger / Supercharger Boost Control Solenoid Circuit Range / Performance | - Turbocharger subassembly | Comes on | DTC stored | |
| P0047 | Turbocharger/Supercharger Boost Control "A" Circuit Low | - Open in DC motor circuit - Turbo motor driver - Turbocharger sub-assembly (DC motor) |
Comes on | DTC stored | |
| P0048 | Turbocharger/Supercharger Boost Control "A" Circuit High | - Short in DC motor circuit - Turbo motor driver - Turbocharger sub-assembly (DC motor) |
Comes on | DTC stored | |
| P0069 | MAP Sensor Too High or Too Low | - ECM | Comes on | DTC stored | |
| P0087 | Fuel Rail / System Pressure - Too Low | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor - ECM |
Comes on | DTC stored | |
| P0088 | Fuel Rail / System Pressure - Too High | - Suction control valve - Pressure discharge valve - Short in suction control valve circuit - ECM |
Comes on | DTC stored | |
| P0093 | Fuel System Leak Detected - Large Leak | - Fuel line between supply pump and common rail - Fuel line between common rail and each injector - Suction control valve - Common rail - Injectors - Pressure discharge valve - Open or short in EDU circuit (P0200 set simultaneously) - Open or short in injector circuit - EDU (P0200 set simultaneously) - ECM |
Comes on | DTC stored | |
| P0095 | Intake Air Temperature Sensor 2 Circuit | - Open or short in diesel turbo IAT sensor circuit - Diesel turbo IAT sensor - ECM |
Comes on | DTC stored | |
| P0097 | Intake Air Temperature Sensor 2 Circuit Low | - Short in IAT sensor circuit - Diesel turbo IAT sensor - ECM |
Comes on | DTC stored | |
| P0098 | Intake Air Temperature Sensor 2 Circuit High | - Open in IAT sensor circuit - Diesel turbo IAT sensor - ECM |
Comes on | DTC stored | |
| P0100 | Mass or Volume Air Flow Circuit | - Open or short in mass air flow meter circuit - Mass air flow meter - ECM |
Comes on | DTC stored | |
| P0101 | Mass or Volume Air Flow Circuit Range / Performance Problem | Mass air flow meter | Comes on | DTC stored | |
| P0102 | Mass Air Flow Circuit Low | - Open or short in mass air flow meter circuit - Mass air flow meter - ECM |
Comes on | DTC stored | |
| P0103 | Mass Air Flow Circuit High | - Open or short in mass air flow meter circuit - Mass air flow meter - ECM |
Comes on | DTC stored | |
| P0105 | Manifold Absolute Pressure / Barometric Pressure Circuit | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - Turbocharger assembly - EGR valve assembly - ECM |
Comes on | DTC stored | |
| P0106 | Manifold Absolute Pressure / Barometric Pressure Circuit Range / Performance Problem | Manifold absolute pressure sensor | Comes on | DTC stored | |
| P0107 | Manifold Absolute Pressure / Barometric Pressure Circuit Low Input | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - Turbocharger assembly - EGR valve assembly - ECM |
Comes on | DTC stored | |
| P0108 | Manifold Absolute Pressure / Barometric Pressure Circuit High Input | - Open or short in manifold absolute pressure sensor circuit - Manifold absolute pressure sensor - Turbocharger assembly - EGR valve assembly - ECM |
Comes on | DTC stored | |
| P0110 | Intake Air Temperature Circuit | - Open or short in IAT sensor circuit - IAT sensor (built into mass air flow meter) - ECM |
Comes on | DTC stored | |
| P0112 | Intake Air Temperature Circuit Low Input | - Short in IAT sensor circuit - IAT sensor (built into mass air flow meter) - ECM |
Comes on | DTC stored | |
| P0113 | Intake Air Temperature Circuit High Input | - Open in IAT sensor circuit - IAT sensor (built into mass air flow meter) - ECM |
Comes on | DTC stored | |
| P0115 | Engine Coolant Temperature Circuit | - Open or short in ECT sensor circuit - ECT 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 | - Short in ECT sensor circuit - ECT sensor - ECM |
Comes on | DTC stored | |
| P0118 | Engine Coolant Temperature Circuit High Input | - Open in ECT sensor circuit - ECT sensor - ECM |
Comes on | DTC stored | |
| P0122 | Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input | - Throttle position sensor - Open or short in VLU circuit - Open in VC circuit - ECM |
Comes on | DTC stored | |
| P0123 | Throttle / Pedal Position Sensor / Switch "A" Circuit High Input | - Throttle position sensor - Open in E2 circuit - VC and VLU circuits are short-circuited - ECM |
Comes on | DTC stored | |
| P0168 | Fuel Temperature Too High | Fuel temperature sensor | Comes on | DTC stored | |
| P0180 | Fuel Temperature Sensor "A" Circuit | - Open or short in fuel temperature sensor circuit - Fuel temperature sensor - ECM |
Comes on | DTC stored | |
| P0182 | Fuel Temperature Sensor "A" Circuit Low Input | - Short in fuel temperature sensor circuit - Fuel temperature sensor - ECM |
Comes on | DTC stored | |
| P0183 | Fuel Temperature Sensor "A" Circuit High Input | - Open in fuel temperature sensor circuit - Fuel temperature sensor - ECM |
Comes on | DTC stored | |
| P0190 | Fuel Rail Pressure Sensor Circuit | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor - ECM |
Comes on | DTC stored | |
| P0191 | Fuel Rail Pressure Sensor Circuit Range / Performance | Fuel pressure sensor | Comes on | DTC stored | |
| P0192 | Fuel Rail Pressure Sensor Circuit Low Input | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor - ECM |
Comes on | DTC stored | |
| P0193 | Fuel Rail Pressure Sensor Circuit High Input | - Open or short in fuel pressure sensor circuit - Fuel pressure sensor - ECM |
Comes on | DTC stored | |
| P0200 | Injector Circuit / Open | - Open or short in EDU circuit - Injector - EDU - ECM |
Comes on | DTC stored | |
| P0335 | Crankshaft Position Sensor "A" Circuit | - Open or short in crankshaft position sensor circuit - Crankshaft position sensor - Crankshaft position sensor plate No. 1 - ECM |
Comes on | DTC stored | |
| P0339 | Crankshaft Position Sensor "A" Circuit Intermittent | - Open or short in crankshaft position sensor circuit - Crankshaft position sensor - Crankshaft position sensor plate No. 1 - ECM |
- | DTC stored | |
| P0340 | Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor) | - Open or short in camshaft position sensor circuit - Camshaft position sensor - Pump drive shaft pulley - ECM |
Comes on | DTC stored | |
| P0400 | Exhaust Gas Recirculation Flow | - EGR valve stuck - EGR valve does not move smoothly - Open or short in E-VRV for EGR circuit - Open or short in EGR valve position sensor circuit - EGR valve position sensor - Vacuum pump - Vacuum hose connection loose - ECM |
Comes on | DTC stored | |
| P0405 | Exhaust Gas Recirculation Sensor "A" Circuit Low | - Open or short in EGR valve position sensor circuit - EGR valve position sensor - ECM |
Comes on | DTC stored | |
| P0406 | Exhaust Gas Recirculation Sensor "A" Circuit High | - Open or short in EGR valve position sensor circuit - EGR valve position sensor - ECM |
Comes on | DTC stored | |
| P0488 | Exhaust Gas Recirculation Throttle Position Control Range / Performance | - Throttle valve stuck - Throttle valve does not move smoothly - Open or short in throttle valve circuit - Open or short in throttle valve position sensor circuit - Throttle position sensor (built in diesel throttle body assembly) - ECM |
Comes on | DTC stored | |
| P0500 | Vehicle Speed Sensor "A" | - Open or short in speed sensor circuit - Vehicle speed sensor - Combination meter - ECM |
Comes on | DTC stored | |
| P0504 | Brake Switch "A" / "B" Correlation | - Short in stop light switch signal circuit - Stop light switch - ECM |
- | DTC stored | |
| P0560 | System Voltage | - Open in back-up power source circuit - Low battery voltage - ECM |
Comes on | DTC stored | |
| P0606 | ECM / PCM Processor | ECM | - | - | |
| P0607 | Control Module Performance | ECM | Comes on | DTC stored | |
| P0617 | Starter Relay Circuit High | - Starter relay circuit - Ignition switch - ECM |
Comes on | DTC stored | |
| P0622 | Generator Field "F" Terminal Circuit | - Open in generator circuit - Generator - ECM |
Comes on | DTC stored | |
| P0627 | Fuel Pump Control Circuit / Open | - Open or short in suction control valve circuit - Suction control valve - ECM |
Comes on | DTC stored | |
| P0630 | VIN not Programmed or Mismatch - ECM / PCM | ECM | Comes on | DTC stored | |
| P1229 | Fuel Pump System | - Short in suction control valve circuit - Suction control valve - ECM |
Comes on | DTC stored | |
| P1238 | Injector Malfunction | - Valve timing - ECM |
Comes on | DTC stored | |
| P1251 | Turbocharger / Supercharger Overboost Condition (Too High) | - Turbocharger sub-assembly - VN turbo link stuck malfunction - Extremely low battery voltage (P0560 stored simultaneously) - Intake system - Exhaust system - Electric EGR control valve assembly - EGR cooler - Injector assembly - Diesel throttle body assembly - ECM |
Comes on | DTC stored | |
| P1264 | VN Turbo Controller Malfunction | - Turbo motor driver - Open or short in turbo motor driver circuit - ECM |
Comes on | DTC stored | |
| P1271 | Fuel Regulator Circuit Malfunction (EDU Drive) | - Open or short in pressure discharge valve circuit - Open or short in pressure discharge valve itself - EDU - ECM |
Comes on | DTC stored | |
| P1272 | Fuel Pressure Regulator Malfunction | - Open or short in pressure discharge valve circuit (P1271 is set simultaneously) - Pressure discharge valve - Suction control valve - ECM |
Comes 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 | |
| P2006 | Intake Manifold Runner Control Stuck Closed (Bank 1) | - VSV for swirl control valve - Open or short in VSV for swirl control valve circuit - Intake manifold (swirl control valve) - EGR valve assembly - MAF meter - ECM |
Comes on | DTC stored | |
| P2009 | Intake Manifold Runner Control Circuit Low (Bank 1) | - VSV for swirl control valve - Open in VSV for swirl control valve circuit - ECM |
Comes on | DTC stored | |
| P2010 | Intake Manifold Runner Control Circuit High (Bank 1) | - VSV for swirl control valve - Short in VSV for swirl control valve circuit - ECM |
Comes on | DTC stored | |
| P2120 | Throttle / Pedal Position Sensor / Switch "D" Circuit | - Accelerator pedal position sensor - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2121 | Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance | - Accelerator pedal position sensor circuit - Accelerator pedal position sensor - ECM |
Comes on | DTC stored | |
| P2122 | Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input | - Accelerator pedal position sensor - Open in VCPA circuit - VPA circuit open or ground short - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2123 | Throttle / Pedal Position Sensor / Switch "D" Circuit High Input | - Accelerator pedal position sensor - Open in EPA circuit - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2125 | Throttle / Pedal Position Sensor / Switch "E" Circuit | - Accelerator pedal position sensor - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2127 | Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input | - Accelerator pedal position sensor - Open in VCP2 circuit - VPA2 circuit open or ground short - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2128 | Throttle / Pedal Position Sensor / Switch "E" Circuit High Input | - Accelerator pedal position sensor - Open in EPA2 circuit - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2138 | Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation | - VPA and VPA2 circuit are short circuited - Accelerator pedal position sensor - Accelerator pedal - Accelerator pedal rod (arm) deformed - ECM |
Comes on | DTC stored | |
| P2226 | Barometric Pressure Circuit | 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 | |
| P2563 | Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit Range/Performance | - Nozzle vane position sensor | Comes on | DTC stored | |
| P2564 | Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit Low | - Nozzle vane position sensor - Turbo motor driver |
Comes on | DTC stored | |
| P2565 | Turbocharger/Supercharger Boost Control Position Sensor "A" Circuit High | - Nozzle vane position sensor - Turbo motor driver |
Comes on | DTC stored | |
| P2588 | Turbocharger/Supercharger Boost Control Position Sensor "B" Circuit Low | - Nozzle vane position sensor - Turbo motor driver |
Comes on | DTC stored | |
| P2589 | Turbocharger/Supercharger Boost Control Position Sensor "B" Circuit High | - Nozzle vane position sensor - Turbo motor driver |
Comes on | DTC stored | |
| P2BAB | NOx Exceedance - Incorrect EGR Flow | - EGR valve stuck - EGR valve does not move smoothly - EGR valve deposit - EGR valve passage deposit - EGR cooler assembly - Air intake system (leaks or blockages |
Comes on | DTC stored | |
| P2BAC | NOx Exceedance - Deactivation of EGR | - EGR valve stuck - Open or short in E-VRV for EGR circuit - Open or short in EGR valve position sensor circuit - EGR valve position sensor - Vacuum pump - Vacuum hose connection loose - EGR cooler assembly |
Comes on | DTC stored |