Free OBD-II trouble-code lookup
What's your check-engine code?
Type a code like P0420 — get the plain-English meaning, whether you can keep driving, and how to fix it.
Got the car's VIN? Check it for open safety recalls.
Popular codes
P0300Random/Multiple Cylinder Misfire…P0113Intake Air Temperature Sensor 1…P0420Catalyst System Efficiency Below…P0683Glow Plug Control Module 1 to PCM…U0100Lost Communication With ECM/PCM "A"P0301Cylinder 1 Misfire DetectedP0303Cylinder 3 Misfire DetectedP0302Cylinder 2 Misfire DetectedP0335Crankshaft Position Sensor A CircuitP0101Mass or Volume Air Flow Sensor A…P0110Intake Air Temperature Sensor 1…P0100Mass or Volume Air Flow Sensor A…P0500Vehicle Speed Sensor A CircuitP0171System Too Lean Bank 1P0340Camshaft Position Sensor A Circuit…U0121Lost Communication With Anti-Lock…P0645A/C Clutch Relay Control CircuitP0304Cylinder 4 Misfire DetectedP0130O2 Sensor Circuit Bank 1 Sensor 1P0380Glow Plug/Heater Circuit AP0201Cylinder 1 Injector A CircuitP0102Mass or Volume Air Flow Sensor A…P0118Engine Coolant Temperature Sensor 1…P0203Cylinder 3 Injector A CircuitP0202Cylinder 2 Injector A CircuitP0031HO2S Heater Control Circuit Low Bank 1…P0401EGR A Flow Insufficient DetectedP0087Fuel Rail/System Pressure - Too Low…P0123Throttle/Pedal Position Sensor/Switch…P0657Actuator Supply Voltage A Circuit/Open
Browse by code range
C00xxChassis · 76 codesP00xxFuel & air metering and auxiliary emission controls · 255 codesP01xxFuel & air metering · 251 codesP02xxFuel & air metering (injector circuits) · 252 codesP03xxIgnition system and misfire · 247 codesP04xxAuxiliary emission controls · 249 codesP05xxVehicle speed, idle control and auxiliary inputs · 249 codesP06xxComputer and output circuits · 250 codesP07xxTransmission · 238 codesP08xxTransmission · 215 codesP09xxTransmission · 147 codesP0AxxHybrid propulsion · 148 codesP0BxxHybrid propulsion · 119 codesP0CxxHybrid propulsion · 133 codesP0DxxHybrid propulsion · 114 codesP0ExxHybrid propulsion · 108 codesP0FxxHybrid propulsion · 1 codesP20xxFuel & air metering and auxiliary emission controls · 141 codesP21xxFuel & air metering and auxiliary emission controls · 105 codesP22xxFuel & air metering and auxiliary emission controls · 119 codesP23xxIgnition system · 48 codesP24xxAuxiliary emission controls · 126 codesP25xxAuxiliary inputs · 108 codesP26xxComputer and auxiliary outputs · 81 codesP27xxTransmission · 107 codesP28xxTransmission · 86 codesP2AxxFuel & air metering and auxiliary emission controls · 12 codesP2BxxFuel & air metering and auxiliary emission controls · 13 codesP2CxxFuel & air metering and auxiliary emission controls · 1 codesP2ExxFuel & air metering and auxiliary emission controls · 1 codesP34xxCylinder deactivation · 98 codesU00xxNetwork communication · 116 codesU01xxNetwork communication · 182 codesU02xxNetwork communication · 174 codesU03xxNetwork communication · 80 codesU04xxInvalid data received · 186 codesU05xxInvalid data received · 160 codesU06xxInvalid data received · 160 codesU09xxNetwork communication · 1 codes
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