Diagnostic Trouble Code (DTC) Information CEM-De2F

Condition

The diagnostic trouble code (DTC) is stored if the Central electronic module (CEM) registers that there is no communication with the power seat module, right (PSR).

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 has been on for at least 10 seconds.

Fig 1: Identifying Power Seat Module (PSM)

Courtesy of VOLVO CARS CORPORATION

Substitute Value

None.

Possible Source

No power supply to the power seat module, right (PSR).
Open-circuit in the ground lead for the power seat module, right (PSR).
Contact resistance in the terminals.
Open-circuit on the cables for LS-CAN to power seat module, right (PSR).
The power seat module, right (PSR) is not intended for this vehicle, for example a used control module with different software/hardware.

Fault symptom[s]

Automatic adjustment of power seat/outer mirror does not work