P0230

P0230

Fuel Pump Relay 1 Output Stage - Open Circuit/Below Limit/Above Limit

Diagnostic conditions
- Battery positive voltage > 10 V
- Engine started
- No fuel pump "B" control circuit (P2632) faults in memory

Possible cause of fault
- Fuse FE14 faulty
- Fuel pump relay faulty
- Open circuit
- Short circuit to B+
- Short circuit to ground
- DME control module faulty

Affected terminals
DME control module connector A, pin 65

NOTE:
- When this fault is recorded, fuel pump 2 (right) is activated continuously
- Fuel supply system faults that are recorded (oxygen sensor range "FRAO" and "FRAU") may be caused by an insufficient fuel supply at full load in single-pump operation.

Diagnosis/troubleshooting for fault type "Open circuit"









Diagnosis/troubleshooting for fault type "Below limit"






Diagnosis/troubleshooting for fault type "Above limit"