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.
- P1537Mercury · PowertrainIntake Manifold Runner Control Stuck Open
- P1537Oldsmobile · PowertrainA/C Request Circuit Low Voltage
- P1537Other · PowertrainIntake Manifold Runner Control (Bank 1) Stuck Open
- P1537Saturn · PowertrainA/C Request Circuit Low Voltage
- P1537Volkswagen · PowertrainEngine Shutoff Solenoid Malfunction
- P1538Buick · PowertrainA/C request Circuit High Voltage
- P1538Cadillac · PowertrainA/C Request Circuit High Voltage
- P1538Chevrolet · PowertrainA/C Request Circuit High Voltage
- P1538Chrysler · PowertrainA/C Request Circuit High Voltage
- P1538Ford · PowertrainIntake Manifold Runner Control Stuck Open
- P1538GM · PowertrainA/C Request Circuit High Voltage
- P1538GMC · PowertrainA/C Request Circuit High Voltage
- P1538Lincoln · PowertrainIntake Manifold Runner Control Stuck Open
- P1538Mercury · PowertrainIntake Manifold Runner Control Stuck Open
- P1538Oldsmobile · PowertrainA/C Request Circuit High Voltage
- P1538Other · PowertrainIntake Manifold Runner Control (Bank 2) Stuck Open
- P1538Saturn · PowertrainA/C Request Circuit High Voltage
- P1538Volkswagen · PowertrainEngine Shutoff Solenoid Open Short To Ground
- P1539Buick · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539Cadillac · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539Chevrolet · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539Chrysler · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539Ford · PowertrainPower to A/C Compressor Clutch Circuit Exceeded Normal Current Draw
- P1539GM · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539GMC · PowertrainAir Conditioning (A/C) Clutch Feedback Circuit High Voltage
- P1539Lincoln · PowertrainPower to A/C Compressor Clutch Circuit Exceeded Normal Current Draw
- P1539Mercury · PowertrainPower to A/C Compressor Clutch Circuit Exceeded Normal Current Draw
- P1539Oldsmobile · PowertrainAir Conditioning A/C Clutch Feedback Circuit High Voltage
- P1539Other · PowertrainPower To A/C Clutch Circuit Overcurrent
- P1539Saturn · PowertrainAir Conditioning A/C Clutch Feedback Circuit High Voltage