P0459

P0459

Diagnosis information - DME V6 DFI

Driver for tank vent

NOTE: If the control unit connector [B] is disconnected from the DFI during fault finding or if the power supply is interrupted elsewhere (battery, fuse), teaching of the throttle valve adjusting unit must be performed.

NOTE: If the ignition is switched on with the connector [B] disconnected from the DFI control unit, the fault >DFI control unit Timeout< can be entered.

Diagnostic conditions
- Battery positive voltage between 9 V and 16 V
- Time after engine starts > 10 seconds

Possible fault causes
- Short circuit to B+
- Short circuit to ground
- Open circuit in line
- Fuse F11 faulty (fuse carrier in plenum panel E-box)
- Tank vent faulty

Affected contacts on the DFI control unit connector
Connector [A]:
- Contact 5

Affected contacts on the tank vent connector
Connector [A]:
- Contact 2