13 documented codes across 30 real diagnostics.
Evaporative emission leaks, purge and vent valves, tank pressure and fuel level sensing. Mostly a petrol-fleet concern.
Ranked by how often we actually see them
- P0441, Evaporative emission system incorrect purge flow
- P0443, Evaporative emission system purge control valve circuit
- P2066, Fuel level sensor B circuit range/performance
- P0456, Evaporative emission system leak detected, very small leak
- P0444, Evaporative emission system purge control valve circuit open
- P0451, Evaporative emission system pressure sensor range/performance
- P0440, not individually documented
- P046C, not individually documented
- P049B, not individually documented
- P0442, Evaporative emission system leak detected, small leak
- P0457, Evaporative emission system leak detected, fuel cap loose or off
- P0461, Fuel level sensor A circuit range/performance
- P2400, Evaporative emission leak detection pump control circuit open