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.
- P1119GMC · PowertrainECT Signal Out Of Range With TFT Sensor
- P1119Lincoln · PowertrainManifold Absolute Temperature Circuit High Input
- P1119Mercury · PowertrainManifold Absolute Temperature Circuit High Input
- P1119Oldsmobile · PowertrainECT Signal Out Of Range With TFT Sensor
- P1119Other · PowertrainManifold Absolute Temperature Circuit High Input
- P1119Saturn · PowertrainECT Signal Out Of Rage With TFT Sensor
- P1119Volkswagen · PowertrainOxygen Sensor Heater Circuit Bank 2 Sensor 1 Short To Ground
- P1120BMW · PowertrainPedal Position Sensor Circuit
- P1120Buick · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120Cadillac · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120Chevrolet · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120Chrysler · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120Ford · PowertrainThrottle Position Sensor Out of Range
- P1120GM · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120GMC · PowertrainThrottle Position (TP) Sensor 1 Circuit
- P1120Lexus · PowertrainAccelerator Pedal Position Sensor Circuit Malfunction
- P1120Lincoln · PowertrainThrottle Position Sensor Out of Range
- P1120Mazda · PowertrainThrottle Position Sensor Out Of Range Low
- P1120Mercury · PowertrainThrottle Position Sensor Out of Range
- P1120Nissan · PowertrainSecondary Throttle Position Sensor Circuit Fault
- P1120Oldsmobile · PowertrainThrottle Position TP Sensor 1 Circuit
- P1120Other · PowertrainThrottle position sensor out of range
- P1120Saturn · PowertrainThrottle Position TP Sensor 1 Circuit
- P1120Subaru · PowertrainStarter Switch High Input
- P1120Toyota · PowertrainAccelerator Pedal Position Sensor Circuit
- P1120Volkswagen · PowertrainOxygen Sensor Heater Circuit Bank 2 Sensor 1 Open
- P1121Acura · PowertrainThrottle Position Lower Than Expected
- P1121BMW · PowertrainPedal Position Sensor 1 Range Performance Problem
- P1121Buick · PowertrainTP Sensor Circuit Intermittent High Voltage
- P1121Cadillac · PowertrainTP Sensor Circuit Intermittent High Voltage