Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CPM-0402

Condition




The diagnostic trouble code (DTC) is stored if the control module registers that the signal on the cable from the fuel pump is too low.
When the diagnostic trouble code (DTC) is stored, the heater is switched off. If the heater is reactivated, the heater will try to start again.
The diagnostic trouble code (DTC) can be diagnosed when the fuel pump is activated. The fuel pump is activated as long as the heater is operating.

Substitute value
- None.

Possible source
- Short-circuit to ground in the cable between the combustion preheater module (CPM) and the fuel pump
- Damaged fuel pump.

Fault symptom[s]
- Poor heating in the passenger compartment
- The parking heater does not operate.