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.
- 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
- P1555Buick · PowertrainElectronic Variable Orifice Output
- P1555Cadillac · PowertrainElectronic Variable Orifice Output
- P1555Chevrolet · PowertrainElectronic Variable Orifice Output
- P1555Chrysler · PowertrainElectronic Variable Orifice Output
- P1555GM · PowertrainElectronic Variable Orifice Output
- P1555GMC · PowertrainElectronic Variable Orifice Output
- P1555Oldsmobile · PowertrainElectronic Variable Orifice Output
- P1555Saturn · PowertrainElectronic Variable Orifice Output
- P1555Volkswagen · PowertrainCharge Pressure Upper Limit Exceeded
- P1556BMW · PowertrainA Camshaft Position Actuator Control Open Circuit Bank 1