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RDCM / C0403 62

Read the instructions below then start the fault diagnostic procedure.

Symptom: Message appears in display.

  C0403 62


Reverse Valve, Oil Filter, Stuck Open

Fault symptom

Message appears in display.

On-board diagnosis

Type of diagnosis:

The diagnosis runs after each pump cycle.
Usually 3-7 pump cycles/minute depending on oil requirement.

Enable criteria:

Engine running.
ECU temperature between 0 - 80°C

Fault criteria:

Voltage at the control module output after shutting off the pump (pump motor rotates in reverse)

Diagnostic help

Diagnosis regards:

Checking mechanical faults

Functions in the diagnostic tool related to the fault:

Activation:
Pump Motor
(See also description of readings/activations in diagnostic tool)