Diagnostic Trouble Code (DTC) Information CEM-De0B

Condition

Fig 1: Identifying Additive Dosing Module (ADM)

Courtesy of VOLVO CARS CORPORATION

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.