Fault codes

OBD-II fault codes explained

What each code means, the usual causes, how to check it yourself, and whether you can keep driving. Every page is checked by a licensed car technician before it’s published.

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Fuel and air (P00–P02) 63
Ignition and misfires (P03) 10
Emissions (P04) 9
Idle and speed control (P05) 4
Engine computer and outputs (P06) 3
Gearbox (P07–P09) 4
More engine and gearbox codes (P2) 5
Network and communication (U) 3
Brakes, steering, and suspension (C) 4
Body, airbags, and comfort (B) 1