CEM-5F3A

Condition
If the water pump circuit is short-circuited to voltage supply, the control unit will interpret this as a fault and the diagnostic trouble code CEM-5F3A will be set.

Condition
None.

Possible source
- Signal wire short-circuited to voltage supply.
- Defective water pump.

Condition
- Parking heater does not work.
- Poor interior heating.