Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-442B

Condition




The central electronic module (CEM) transmits information about the fuel level and the fault status of the fuel level sensor to the engine control module (ECM).
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a communication problem with the central electronic module (CEM).

Substitute value
None.

Possible source
- Open-circuit in the control area network (CAN) wiring
- Short-circuit between the control area network (CAN) wiring
- Internal fault in another control module in the same part of the control area network (CAN).

Fault symptom[s]
- Gauges/Fuel level not accurate/Value too low