2F7B

2F7B - P0520

Information saved in
DME

Fault code
2F7B - P0520

Fault text
Oil-pressure switch, plausibility

Fault description
Engine Oil Pressure Sensor/Switch Circuit

Condition for fault identification
Test condition:
Oil presure switch monitor
Terminal condition: Engine speed = 0
Control module in post-operational shutdown phase
Voltage condition:
Voltage in onboard electrical system > 10 V

Condition for fault memory entry
Engine shutdown:
continues roughly 8 sec. after engine is switched off.

Action in service
1. Check wire from oil
pressure switch.
If not OK --> Repair wire
If OK -->
2. Replace switch
3. Switch should change position when
engine is started and then shut down
(ground connection)

Fault effect and breakdown warning


Driver information
Warning light:
Possible display in the MMI will vary according to whether
the switch seizes while open or closed.

Service instruction
none