Powertrain fault codes
14821 Powertrain OBD-II fault codes: what each one means, and how to track it down.
How to read a code
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 4
- AreaAuxiliary emission controls
- 20
- FaultThe specific fault in that area
Read the code
Note every stored and pending code your scanner shows, such as P0420.
Find it
Search by code or by words. For a manufacturer code (P1, B1, C1, U1) pick your make: its meaning differs by make.
Open the code
Its page explains the symptoms, likely causes, the checks to run and the fixes.
- P01B5Generic · PowertrainAlternative Fuel Rail Temperature Sensor Performance
- P01B6Generic · PowertrainAlternative Fuel Rail Temperature Sensor Circuit Low
- P01B7Generic · PowertrainAlternative Fuel Rail Temperature Sensor Circuit High
- P01B8Generic · PowertrainAlternative Fuel Rail Temperature Sensor Circuit Intermittent/Erratic
- P01B9Generic · PowertrainEngine Oil Temperature Sensor B Circuit
- P01BAGeneric · PowertrainEngine Oil Temperature Sensor B Range/Performance
- P01BBGeneric · PowertrainEngine Oil Temperature Sensor B Circuit Low
- P01BCGeneric · PowertrainEngine Oil Temperature Sensor B Circuit High
- P01BDGeneric · PowertrainEngine Oil Temperature Sensor B Circuit Intermittent/Erratic
- P01BEGeneric · PowertrainFuel Rail Pressure Sensor Circuit Bank 2
- P01BFGeneric · PowertrainFuel Rail Pressure Sensor Circuit Range/Performance Bank 2
- P01C0Generic · PowertrainFuel Rail Pressure Sensor Circuit Low Bank 2
- P01C1Generic · PowertrainFuel Rail Pressure Sensor Circuit High Bank 2
- P01C2Generic · PowertrainFuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2
- P01C3Generic · PowertrainFuel Pressure Sensor A Circuit
- P01C4Generic · PowertrainFuel Pressure Sensor A Circuit Range/Performance
- P01C5Generic · PowertrainFuel Pressure Sensor A Circuit Low
- P01C6Generic · PowertrainFuel Pressure Sensor A Circuit High
- P01C7Generic · PowertrainFuel Pressure Sensor A Circuit Intermittent/Erratic
- P01C8Generic · PowertrainFuel Rail/System Pressure - Too Low Bank 2
- P01C9Generic · PowertrainFuel Rail/System Pressure - Too High Bank 2
- P01CAGeneric · PowertrainFuel Rail Pressure Too Low - Engine Cranking Bank 2
- P01CBGeneric · PowertrainCylinder 1 Injection Timing Performance - Over Retarded
- P01CCGeneric · PowertrainCylinder 1 Injection Timing Performance - Over Advanced
- P01CDGeneric · PowertrainCylinder 2 Injection Timing Performance - Over Retarded
- P01CEGeneric · PowertrainCylinder 2 Injection Timing Performance - Over Advanced
- P01CFGeneric · PowertrainCylinder 3 Injection Timing Performance - Over Retarded
- P01D0Generic · PowertrainCylinder 3 Injection Timing Performance - Over Advanced
- P01D1Generic · PowertrainCylinder 4 Injection Timing Performance - Over Retarded
- P01D2Generic · PowertrainCylinder 4 Injection Timing Performance - Over Advanced