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
P0420Catalyst System Efficiency Below ThresP0300Random/Multiple Cylinder Misfire DetecP0171System Too Lean Bank 1P0128Coolant Thermostat (Coolant TemperaturP0442EVAP System Leak Detected (small leak)P0455EVAP System Leak Detected - Large LeakP0401EGR A Flow Insufficient DetectedP0700Transmission Control System (MIL Reque
OBD DashX
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.