P1152

P1152

Diagnosis information - DME (DFI)

Oil pressure- regulating valve: Activation

NOTE:
- The oil pressure-regulating valve is controlled via a PWM signal.
- Among other things, the PWM signal is dependent on:
- Ambient conditions (temperatures, off period etc.)
- Operating point of the engine
- Measured oil pressure (at oil pressure sensor)
- A fault is detected if the PWM signal is outside a defined range for more than 8 seconds.

Diagnostic conditions
- Engine running

Possible fault causes
- Short circuit to B+/ground/between wires or open circuit in the control line to the oil pressure-regulating valve regulating
- Open circuit in the power supply line to the oil pressure-regulating valve
- Oil pressure-regulating valve faulty