Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code information

Condition




If the fuel pump circuit is short-circuited to ground or if there is an open circuit, the control unit will interpret this as a fault, and diagnostic trouble code CEM-5F40 will be set.

Substitute value
- None.

Possible source
- Contact resistance in control unit or fuel pump connector.
- Signal wire short-circuited to ground.
- Open circuit in signal wire.
- Open circuit in voltage wire.
- Damaged fuel pump.
- Damaged overheat protection thermostat.

Fault symptom[s]
- Poor interior heating.