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.
- P1886Cadillac · PowertrainShift Timing Solenoid
- P1886Chevrolet · PowertrainShift Timing Solenoid
- P1886GM · PowertrainShift Timing Solenoid
- P1886GMC · PowertrainShift Timing Solenoid
- P1886Oldsmobile · PowertrainShift Timing Solenoid
- P1886Other · Powertrain4X4 Initialization Failure
- P1886Saturn · PowertrainShift Timing Solenoid
- P1887Buick · PowertrainTCC Release Switch Circuit
- P1887Cadillac · PowertrainTCC Release Switch Circuit
- P1887Chevrolet · PowertrainTCC Release Switch Circuit
- P1887GM · PowertrainTCC Release Switch Circuit
- P1887GMC · PowertrainTCC Release Switch Circuit
- P1887Oldsmobile · PowertrainTCC Release Switch Circuit
- P1887Saturn · PowertrainTCC Release Switch Circuit
- P1890Buick · PowertrainECM Data Input Circuit
- P1890Cadillac · PowertrainECM Data Input Circuit
- P1890Chevrolet · PowertrainECM Data Input Circuit
- P1890GM · PowertrainECM Data Input Circuit
- P1890GMC · PowertrainECM Data Input Circuit
- P1890Oldsmobile · PowertrainECM Data Input Circuit
- P1890Other · PowertrainTransmission 4WD Mode Select Return Input Circuit Failure
- P1890Saturn · PowertrainECM Data Input Circuit
- P1891Buick · PowertrainThrottle Position Sensor PWM Signal Low
- P1891Cadillac · PowertrainThrottle Position Sensor PWM Signal Low
- P1891Chevrolet · PowertrainThrottle Position Sensor PWM Signal Low
- P1891Ford · PowertrainTransmission Transfer Case Contact Plate Ground Return Open Circuit
- P1891GM · PowertrainThrottle Position Sensor PWM Signal Low
- P1891GMC · PowertrainThrottle Position Sensor PWM Signal Low
- P1891Lincoln · PowertrainTransmission Transfer Case Contact Plate Ground Return Open Circuit
- P1891Mercury · PowertrainTransmission Transfer Case Contact Plate Ground Return Open Circuit