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.
- P2890Generic · PowertrainCylinder 1 Ion Current Sense Circuit
- P2891Generic · PowertrainCylinder 1 Ion Current Sense Circuit Range/Performance
- P2892Generic · PowertrainCylinder 1 Ion Current Sense Circuit Low
- P2893Generic · PowertrainCylinder 1 Ion Current Sense Circuit High
- P2894Generic · PowertrainCylinder 2 Ion Current Sense Circuit
- P2895Generic · PowertrainCylinder 2 Ion Current Sense Circuit Range/Performance
- P2896Generic · PowertrainCylinder 2 Ion Current Sense Circuit Low
- P2897Generic · PowertrainCylinder 2 Ion Current Sense Circuit High
- P2898Generic · PowertrainCylinder 3 Ion Current Sense Circuit
- P2899Generic · PowertrainCylinder 3 Ion Current Sense Circuit Range/Performance
- P289AGeneric · PowertrainCylinder 3 Ion Current Sense Circuit Low
- P289BGeneric · PowertrainCylinder 3 Ion Current Sense Circuit High
- P289CGeneric · PowertrainCylinder 4 Ion Current Sense Circuit
- P289DGeneric · PowertrainCylinder 4 Ion Current Sense Circuit Range/Performance
- P289EGeneric · PowertrainCylinder 4 Ion Current Sense Circuit Low
- P289FGeneric · PowertrainCylinder 4 Ion Current Sense Circuit High
- P28A0Generic · PowertrainCylinder 5 Ion Current Sense Circuit
- P28A1Generic · PowertrainCylinder 5 Ion Current Sense Circuit Range/Performance
- P28A2Generic · PowertrainCylinder 5 Ion Current Sense Circuit Low
- P28A3Generic · PowertrainCylinder 5 Ion Current Sense Circuit High
- P28A4Generic · PowertrainCylinder 6 Ion Current Sense Circuit
- P28A5Generic · PowertrainCylinder 6 Ion Current Sense Circuit Range/Performance
- P28A6Generic · PowertrainCylinder 6 Ion Current Sense Circuit Low
- P28A7Generic · PowertrainCylinder 6 Ion Current Sense Circuit High
- P28A8Generic · PowertrainCylinder 7 Ion Current Sense Circuit
- P28A9Generic · PowertrainCylinder 7 Ion Current Sense Circuit Range/Performance
- P28AAGeneric · PowertrainCylinder 7 Ion Current Sense Circuit Low
- P28ABGeneric · PowertrainCylinder 7 Ion Current Sense Circuit High
- P28ACGeneric · PowertrainCylinder 8 Ion Current Sense Circuit
- P28ADGeneric · PowertrainCylinder 8 Ion Current Sense Circuit Range/Performance