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.
- P1381Mercury · PowertrainCam Timing Advance is Excessive
- P1381Oldsmobile · PowertrainMisfire Detected No Communication with Brake Control Module
- P1381Other · PowertrainVariable Cam Timing Overadvanced (Bank #1)/ Misfire Detected - No Communication with BCM
- P1381Saturn · PowertrainMisfire Detected No Communication with Brake Control Module
- P1382Acura · PowertrainCYP Sensor A No Signal
- P1382Honda · PowertrainCYP Sensor A No Signal
- P1382Infiniti · PowertrainCYP Sensor A No Signal
- P1382Mazda · PowertrainCamshaft Position Timing Solenoid 1 Circuit
- P1382Other · PowertrainVariable Cam Timing Solenoid #1 Circuit Malfunction
- P1383Ford · PowertrainCam Timing Advance is Excessive
- P1383Lincoln · PowertrainCam Timing Advance is Excessive
- P1383Mercury · PowertrainCam Timing Advance is Excessive
- P1383Other · PowertrainVariable Cam Timing Overretarded (Bank #1)
- P1384BMW · PowertrainKnock Sensor 3 Circuit
- P1384Jaguar · PowertrainVariable Valve Timing Solenoid A Circuit
- P1384Other · PowertrainVVT Solenoid A Malfunction
- P1385BMW · PowertrainKnock Sensor 4 Circuit
- P1385Ford · PowertrainVariable Cam Timing Solenoid B Malfunction
- P1385Lincoln · PowertrainVariable Cam Timing Solenoid B Malfunction
- P1385Mercury · PowertrainVariable Cam Timing Solenoid B Malfunction
- P1385Other · PowertrainVariable Cam Timing Solenoid B Malfunction
- P1386Acura · PowertrainCYP Sensor B Intermittent Interruption
- P1386BMW · PowertrainControl Module Self-test Knock Control Baseline Test Bank 1
- P1386Ford · PowertrainVariable Cam Timing Overadvanced Bank 2
- P1386Honda · PowertrainCYP Sensor B Intermittent Interruption
- P1386Infiniti · PowertrainCYP Sensor B Intermittent Interruption
- P1386Kia · PowertrainKnock Sensor Control Zero Test
- P1386Lincoln · PowertrainVariable Cam Timing Overadvanced Bank 2
- P1386Mercury · PowertrainVariable Cam Timing Overadvanced Bank 2
- P1386Other · PowertrainVariable Cam Timing Overadvanced (Bank #2)