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.
- P1278Saturn · PowertrainAccelerator Pedal Position Sensor 1 Circuit High Voltage
- P1280Saturn · PowertrainAccelerator Pedal Position APP Sensor 2 Circuit
- P1281Saturn · PowertrainAccelerator Pedal Position APP Sensor 2 Performance
- P1282Saturn · PowertrainAccelerator Pedal Position Sensor 2 Circuit Low Voltage
- P1283Saturn · PowertrainAccelerator Pedal Position Sensor 2 Circuit High Voltage
- P1285Saturn · PowertrainAccelerator Pedal Position APP Sensor 3 Circuit
- P1286Saturn · PowertrainAccelerator Pedal Position APP Sensor 3 Performance
- P1287Saturn · PowertrainAccelerator Pedal Position Sensor 3 Circuit Low Voltage
- P1288Saturn · PowertrainAccelerator Pedal Position Sensor 3 Circuit High Voltage
- P1300Saturn · PowertrainIgnitor Circuit
- P1305Saturn · PowertrainIgnition Coil 2 Primary Feedback Circuit
- P1310Saturn · PowertrainIgnition Coil 3 Primary Feedback Circuit
- P1315Saturn · PowertrainIgnition Coil 4 Primary Feedback Circuit
- P1320Saturn · PowertrainIC Module 4X Ref Circuit Intermittent No Pulses
- P1321Saturn · PowertrainElectronic Ignition System Fault Line
- P1322Saturn · PowertrainEI System Or Ignition Control Missing
- P1323Saturn · Powertrain24X Reference Circuit Low Frequency
- P1324Saturn · PowertrainCrank RPM Too Low
- P1335Saturn · PowertrainCKP Circuit
- P1336Saturn · PowertrainCrankshaft Position CKP System Variation Not Learned
- P1345Saturn · PowertrainCKP CMP Correlation
- P1346Saturn · PowertrainIntake Camshaft Position CMP Sensor System Performance
- P1350Saturn · PowertrainIgnition Contol System
- P1351Saturn · PowertrainIC Circuit High Voltage
- P1352Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.2
- P1353Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.3
- P1354Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.4
- P1355Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.5
- P1356Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.6
- P1357Saturn · PowertrainIC Output High Pulse Detected When Grounded Cyl.7