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• P0629

  P0629

  
  

  Diagnosis information - DME V6 DFI Fuel pump relay driver 1 (left)

  NOTE: Any stored faults of the fuel supply (oxygen sensing range [FRAO] and [FRAU]) could be a result of insufficient fuel supply at full load in one-pump operation.

  
  

  Diagnostic conditions

• Battery positive voltage > 10 V
• Fuel tank level 15... 60 liters
• Engine running > 10 seconds
  
  

  Possible fault causes

• Short circuit to B+
• Short circuit to ground
• Open circuit in line
• Fuse FE 14 faulty (fuse carrier in plenum panel E-box)
• Fuel pump relay faulty
  
  

  Affected contacts on the DFI control unit connector

  
  
  Connector [B]:
• Contact 9
  
  

  Affected contacts on the fuel pump relay connector

• Contact 85