Diagnostic trouble code (DTC) information ECM-443D

Condition 

Fig 1: Identifying Fuel Level Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.

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 in the central electronic module (CEM) if the central electronic module (CEM) registers an electrical fault in the fuel level sensor. A diagnostic trouble code (DTC) will be stored in the engine control module (ECM) at the same time.

Substitute Value 

None.

Possible Source 

• Fault-trace the central electronic module (CEM).

Fault symptom[s] 

• Gauges/Fuel level not accurate/Value too low