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.
- P1612Saturn · PowertrainLoss Of IPM Serial Data
- P1612Volkswagen · PowertrainEngine Control Module Incorrect Coding
- P1613Buick · PowertrainLoss Of DIM Serial Data
- P1613Cadillac · PowertrainLoss Of DIM Serial Data
- P1613Chevrolet · PowertrainLoss Of DIM Serial Data
- P1613GM · PowertrainLoss Of DIM Serial Data
- P1613GMC · PowertrainLoss Of DIM Serial Data
- P1613Mercedes-Benz · PowertrainIFI Control Module N37
- P1613Oldsmobile · PowertrainLoss Of DIM Serial Data
- P1613Other · PowertrainSBDS Interactive Codes
- P1613Saturn · PowertrainLoss Of DIM Serial Data
- P1613Volkswagen · PowertrainMIL Call-Up Circuit Open Short To B+
- P1614Buick · PowertrainLoss Of RIM Serial Data
- P1614Cadillac · PowertrainLoss Of RIM Serial Data
- P1614Chevrolet · PowertrainLoss Of RIM Serial Data
- P1614GM · PowertrainLoss Of RIM Serial Data
- P1614GMC · PowertrainLoss Of RIM Serial Data
- P1614Kia · PowertrainMIL Request Circuit Voltage High
- P1614Mercedes-Benz · PowertrainIFI Control Module N37 Voltage Or Fuel Metering Actuator Y231K1 Or Fuel Rack Position Sensor Y2311
- P1614Oldsmobile · PowertrainLoss Of RIM Serial Data
- P1614Other · PowertrainSBDS Interactive Codes
- P1614Saturn · PowertrainLoss Of RIM Serial Data
- P1614Volkswagen · PowertrainMIL Call-Up Circuit Transmission Control Module Range Performance
- P1615Buick · PowertrainLoss Of VTD Serial Data
- P1615Cadillac · PowertrainLoss Of VTD Serial Data
- P1615Chevrolet · PowertrainLoss Of VTD Serial Data
- P1615GM · PowertrainLoss Of VTD Serial Data
- P1615GMC · PowertrainLoss Of VTD Serial Data
- P1615Mercedes-Benz · PowertrainIFI Control Module N37 Supply Voltage
- P1615Oldsmobile · PowertrainLoss Of VTD Serial Data