OBD2 code directory
Every code guide, grouped by system.
🔧 Air intake / Turbo
🔧 Air intake / intake air temperature sensor
🔧 Air intake / intake manifold runner control
🔧 Air intake / manifold absolute pressure (MAP) sensor
🔧 Air intake / mass air flow sensor
🔧 Brake light switch / brake pedal signal
🌡 Cooling
🔧 Diesel cold-start / glow plug system
🔧 Diesel engine starting / glow plugs
🌫 Emissions / EGR
🌫 Emissions / EVAP
- P0440 Evaporative Emission (EVAP) Control System Malfunction
- P0441 Evaporative Emission (EVAP) System Incorrect Purge Flow
- P0442 Evaporative Emission (EVAP) System Leak Detected (small leak)
- P0446 Evaporative Emission (EVAP) System Vent Control Circuit Malfunction
- P0455 Evaporative Emission (EVAP) System Leak Detected (large leak / no purge flow)
- P0456 Evaporative Emission (EVAP) System Leak Detected (very small leak)
- P0457 Evaporative Emission (EVAP) System Leak Detected (fuel cap loose/off)
🌫 Emissions / diesel aftertreatment
🌫 Emissions / exhaust
🌫 Emissions / oxygen sensors
🔧 Engine / Idle control
🔧 Engine cooling system
🔧 Engine lubrication / oil level sensor
🔧 Engine lubrication / oil life monitor
🔧 Engine lubrication / oil pressure
🔧 Engine lubrication / oil pressure sensor
🔧 Engine lubrication / variable oil pump control solenoid
🔧 Engine timing / cam and crank sensors
- P0016 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
- P0017 Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor B)
- P0335 Crankshaft Position Sensor "A" Circuit Malfunction
- P0340 Camshaft Position Sensor "A" Circuit Malfunction
- P0341 Camshaft Position Sensor "A" Circuit Range/Performance