There are three "Golden Rules" to adhere to when diagnosing concerns on the
N54 engine:
1. When diagnosing cases of smoke from the exhaust, it is important to avoid
unnecessary replacement of
the turbochargers. Smoke can be caused by oil consumption such as the crankcase
ventilation system.
Alwa
REMOVING AND INSTALLING/REPLACING OIL PRESSURE SENSOR (N52, N52K, N51,
N54, N53)
Necessary preliminary tasks:
Switch off ignition
N52, N52K, N51, N53 only:
Remove ignition coil cover.
N54 only:
Remove intake filter housing
WARNING: Scalding hazard!
Only perform this task on an engin