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.
- P1252Mazda · PowertrainPressure Regulator Control Solenoid 2 Circuit Malfunction
- P1260Mazda · PowertrainAnti-Theft System Signal Detected Engine Disabled
- P1270Mazda · PowertrainEngine RPM or Vehicle Speed Limit Reached
- P1279Mazda · PowertrainControl Sleeve Sensor Circuit Range Performance
- P1298Mazda · PowertrainInjector Driver Module Failure
- P1309Mazda · PowertrainMisfire Detection Monitor
- P1312Mazda · PowertrainInjection Pump Timing Actuator Circuit
- P1318Mazda · PowertrainInjection Timing Piston Position Sensor Circuit
- P1319Mazda · PowertrainInjection Timing Piston Position Sensor Circuit Range Performance
- P1345Mazda · PowertrainNo CMP or SGC Signal
- P1351Mazda · PowertrainIgnition Diagnostic Monitor Signal Lost To PCM Or Out Of Range
- P1352Mazda · PowertrainIgnition Coil A Primary Circuit
- P1353Mazda · PowertrainIgnition Coil B Primary Circuit
- P1354Mazda · PowertrainIgnition Coil C Primary Circuit
- P1358Mazda · PowertrainIgnition Diagnostic Monitor Signal Out Of Self Test Range
- P1359Mazda · PowertrainSPOUT Signal Lost To Powertrain Control Module Or Out Of Range
- P1360Mazda · PowertrainIgnition Coil A Secondary Circuit
- P1361Mazda · PowertrainIgnition Coil B Secondary Circuit
- P1362Mazda · PowertrainIgnition Coil C Secondary Circuit
- P1364Mazda · PowertrainIgnition Coil Primary Circuit
- P1365Mazda · PowertrainIgnition Coil Secondary Circuit
- P1382Mazda · PowertrainCamshaft Position Timing Solenoid 1 Circuit
- P1387Mazda · PowertrainCamshaft Position Timing Solenoid 2 Circuit
- P1390Mazda · PowertrainOctane Adjust Shorting Bar Out Or Circuit Open
- P1400Mazda · PowertrainDPFE Sensor Circuit Low Input
- P1401Mazda · PowertrainDPFE Sensor Circuit High Input
- P1402Mazda · PowertrainEGR Valve Position Sensor Circuit
- P1405Mazda · PowertrainDPFE Sensor Upstream Hose Off Or Plugged
- P1406Mazda · PowertrainDPFE Sensor Downstream Hose Off Or Plugged
- P1407Mazda · PowertrainNo EGR Flow Detected