VOLVO
CEM-U042387 - Invalid Data Received From Instrument Panel Control Module. Bus Signal / Message Failures. Missing message
System
Central Electronic Module (CEM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (4)
What does this fault code mean?
The fault code means that CEM receives no messages from the driver information module (DIM) on the CAN network. The fault may be an open circuit in the CAN wiring or an internal fault in the DIM. The start inhibitor may then stop working, and the function is switched off permanently after 100 operating cycles in which the fault is detected.
Possible causes
- Open circuit in the CAN wiring between the control module and CEM
- Internal fault in the driver information module (DIM)
- If several fault codes are stored in CEM for communication faults with other modules, there may be a common fault in the CAN network
What you can do
- 1Check that the fuses are intact and look up their positions in the handbook
- 2Test the relevant functions with buttons, controls or a road test to see whether the fault shows
- 3With a diagnostic tool, read the fault codes and check that communication with the instrument cluster works
- 4Have a workshop check the CAN wires and the instrument cluster with diagnostic equipment. Do not replace the CEM without need
Symptoms you may notice1
- Start inhibitor does not work
What the fault can affect2
- The function is switched off permanently after 100 operating cycles in which the fault was detected
- Erasing the fault codes resets the function
General guidance for car owners. Diagnosis on the car can point to a different cause.