OBD-II trouble codes

Ranked by how often the code appears in real NHTSA owner complaints - not alphabetically. P = powertrain, B = body, C = chassis, U = network.

Browse by symptom

Rough idle / shaking Stalling Hard starting Hesitation / power loss Flashing check engine light Poor fuel economy Shifting problems Temperature / cooling ABS / dashboard lights

Codes whose typical symptoms include temperature / cooling - most serious first:

P0607Control Module Performance P0117Engine Coolant Temperature Sensor 1 Circuit Low P0118Engine Coolant Temperature Sensor 1 Circuit High P0125Insufficient Coolant Temperature for Closed Loop Fuel Control P0128Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)P0532A/C Refrigerant Pressure Sensor A Circuit Low