Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-5F50

Condition




The central electronic module (CEM) checks the communication with the combustion preheater module (CPM).
If Central electronic module (CEM) registers non-allowed high temperature of the coolant, the diagnostic trouble code is generated.
The diagnostic trouble code (DTC) can be diagnosed when the heater is activated.

Substitute value
- None.

Possible source
- Air in the cooling system
- The cooling system is blocked
- Damaged water pump.
- Damaged overheat protection thermostat
- Damaged engine coolant temperature (ECT) sensor.

Fault symptom[s]
- Poor heating in the passenger compartment.