DTC codes
Look up an OBD-II fault code: what it means on every car or on your make, 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.
- 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
- P01D3Generic · PowertrainCylinder 5 Injection Timing Performance - Over Retarded
- P01D4Generic · PowertrainCylinder 5 Injection Timing Performance - Over Advanced
- P01D5Generic · PowertrainCylinder 6 Injection Timing Performance - Over Retarded
- P01D6Generic · PowertrainCylinder 6 Injection Timing Performance - Over Advanced
- P01D7Generic · PowertrainCylinder 7 Injection Timing Performance - Over Retarded
- P01D8Generic · PowertrainCylinder 7 Injection Timing Performance - Over Advanced
- P01D9Generic · PowertrainCylinder 8 Injection Timing Performance - Over Retarded
- P01DAGeneric · PowertrainCylinder 8 Injection Timing Performance - Over Advanced
- P01DBGeneric · PowertrainCylinder 9 Injection Timing Performance - Over Retarded
- P01DCGeneric · PowertrainCylinder 9 Injection Timing Performance - Over Advanced
- P01DDGeneric · PowertrainCylinder 10 Injection Timing Performance - Over Retarded
- P01DEGeneric · PowertrainCylinder 10 Injection Timing Performance - Over Advanced
- P01DFGeneric · PowertrainCylinder 11 Injection Timing Performance - Over Retarded
- P01E0Generic · PowertrainCylinder 11 Injection Timing Performance - Over Advanced