Diagnostic Trouble Code (DTC) Information CEM-De0B
Condition
Diagnostic trouble codes (DTCs) are stored if the central electronic module (CEM) registers that communication with the additive dosing module (ADM) is not operating.
NOTE:
In the event of CEM-DEXX diagnostic trouble codes (DTCs) being stored the central electronic module (CEM) must not be replaced; the diagnostic trouble code (DTC) indicates a communication fault in the Control area network
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute Value
- None.
Possible Source
- No power supply to additive dosing module (ADM)
- Open-circuit in the ground lead to the additive dosing module (ADM)
- Contact resistance in the terminals
- Open-circuit in the wiring for the CAN high speed network to the additive dosing module (ADM)
- The additive dosing module (ADM) is not intended for this car, for example a used control module with different software/hardware.
Fault symptom[s]
- Message in the display.