Oil pressure sensor
Check the oil pressure sensor, fuel temperature sensor and mass flow sensor, along with the connectors and electrical cables in the circuit.
What you'll see
No driver-visible symptom recorded.
System reaction
There is a common power supply for the oil pressure sensor, fuel temperature sensor and mass flow sensor. If a fault occurs in one of the sensors, this can affect the circuits of the other sensors.If the voltage is outside the permitted range, the control unit uses a preprogrammed value.The oil pressure gauge in the instrument panel indicates 0 bar, irrespective of engine speed. The oil pressure lamp will not be on.
Diagnostic depth
The voltage in the circuit has been above the permitted level.
Possible causes are:- Open circuit in oil pressure sensor circuit.- Fault in the fuel temperature sensor circuit or mass flow sensor