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.
- P1548Saturn · PowertrainA/C Recirculation Circuit
- P1548Volkswagen · PowertrainBoost Pressure Control Valve Open
- P1549Ford · PowertrainIntake Manifold Temperature Valve Vacuum Actuator Connection
- P1549Lincoln · PowertrainIntake Manifold Temperature Valve Vacuum Actuator Connection
- P1549Mercury · PowertrainIntake Manifold Temperature Valve Vacuum Actuator Connection
- P1549Other · PowertrainIMCC Circuit Malfunction, Bank B
- P1549Volkswagen · PowertrainBoost Pressure Control Valve Open Short To Ground
- P1550BMW · PowertrainIdle Speed Control Valve Closing Solenoid Control Circuit Electrical
- P1550Ford · PowertrainPower Steering Pressure Sensor Out of Self-Test Range
- P1550Lincoln · PowertrainPower Steering Pressure Sensor Out of Self-Test Range
- P1550Mercury · PowertrainPower Steering Pressure Sensor Out of Self-Test Range
- P1550Nissan · PowertrainTCC Solenoid Valve
- P1550Other · PowertrainPSPS Out Of Self Test Range
- P1550Volkswagen · PowertrainCharge Pressure Deviation
- P1551BMW · PowertrainA Camshaft Position Actuator Control Open Circuit Bank 1
- P1551Volkswagen · PowertrainBarometric Pressure Sensor Circuit Short To B+
- P1552BMW · PowertrainA Camshaft Position Actuator Control Open Circuit Bank 1
- P1552Kia · PowertrainIdle Air Control Valve Opening Coil Low Voltage
- P1552Volkswagen · PowertrainBarometric Pressure Sensor Circuit Open Short To Ground
- P1553Kia · PowertrainIdle Air Control Valve Opening Coil High Voltage
- P1553Volkswagen · PowertrainBarometric Manifold Pressure Signal Ratio Out Of Range
- P1554Buick · PowertrainCruise Engaged Circuit High Voltage
- P1554Cadillac · PowertrainCruise Engaged Circuit High Voltage
- P1554Chevrolet · PowertrainCruise Engaged Circuit High Voltage
- P1554Chrysler · PowertrainCruise Engaged Circuit High Voltage
- P1554GM · PowertrainCruise Engaged Circuit High Voltage
- P1554GMC · PowertrainCruise Engaged Circuit High Voltage
- P1554Oldsmobile · PowertrainCruise Engaged Circuit High Voltage
- P1554Saturn · PowertrainCruise Engaged Circuit High Voltage
- P1554Volkswagen · PowertrainIdle Speed Control Throttle Position Missing Adaptation Conditions