P1181
P1181Diagnosis information - DME V6 DFI
Driver for positive crankcase ventilation heater
NOTE: The line diagnostics in the DFI control unit also runs when the positive crankcase ventilation heater is switched off (i.e. over 3 °C (37 °F) outside air temperature).
NOTE: The positive crankcase ventilation heater is continuously activated when a fault is present in recording the outside air temperature.
Diagnostic conditions
- Battery positive voltage between 10 V and 16 V
- Time after engine starts > 1 seconds
Possible fault causes
- Short circuit to B+
- Short circuit to ground
- Open circuit in line
- Fuse FE 50 faulty (fuse carrier on left of dashboard)
- Positive crankcase ventilation heater faulty
Affected contacts on the DFI control unit connector
Connector [A]
- Contact 49
Affected contacts on the positive crankcase ventilation heater connector
- Contact 2