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.
- P2308Generic · PowertrainIgnition Coil C Secondary Circuit
- P2308Audi · PowertrainIgnition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
- P2309Generic · PowertrainIgnition Coil D Primary Control Circuit Low
- P230AGeneric · PowertrainCylinder 1 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P230BGeneric · PowertrainCylinder 2 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P230CGeneric · PowertrainCylinder 3 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P230DGeneric · PowertrainCylinder 4 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P230EGeneric · PowertrainCylinder 5 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P230FGeneric · PowertrainCylinder 6 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P2310Generic · PowertrainIgnition Coil D Primary Control Circuit High
- P2310Audi · PowertrainIgnition coil failure, Powertrain Control Module (PCM) failure, Wiring issue
- P2311Generic · PowertrainIgnition Coil D Secondary Circuit
- P2312Generic · PowertrainIgnition Coil E Primary Control Circuit Low
- P2313Generic · PowertrainIgnition Coil E Primary Control Circuit High
- P2314Generic · PowertrainIgnition Coil E Secondary Circuit
- P2315Generic · PowertrainIgnition Coil F Primary Control Circuit Low
- P2316Generic · PowertrainIgnition Coil F Primary Control Circuit High
- P2317Generic · PowertrainIgnition Coil F Secondary Circuit
- P2318Generic · PowertrainIgnition Coil G Primary Control Circuit Low
- P2319Generic · PowertrainIgnition Coil G Primary Control Circuit High
- P231AGeneric · PowertrainCylinder 7 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P231BGeneric · PowertrainCylinder 8 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P231CGeneric · PowertrainCylinder 9 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P231DGeneric · PowertrainCylinder 10 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P231EGeneric · PowertrainCylinder 11 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P231FGeneric · PowertrainCylinder 12 Air-Fuel Ratio Imbalance - Adjustment At Limit During Balance
- P2320Generic · PowertrainIgnition Coil G Secondary Circuit
- P2321Generic · PowertrainIgnition Coil H Primary Control Circuit Low
- P2322Generic · PowertrainIgnition Coil H Primary Control Circuit High
- P2323Generic · PowertrainIgnition Coil H Secondary Circuit