Diagnostic Trouble Code (DTC) Information

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.