VOLVO
CEM-B12C986 - LIN Bus "E". Bus Signal / Message Failures. Signal invalid
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleV40 (2013–), V40 Cross Country (2013–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The CEM communicates with the overhead console (OHC) and the rear reading light (RRL) over the LIN bus. The fault is stored when messages on the bus become corrupt, and The fault affects the functions that are controlled from the overhead console and the rear reading light.
Mögliche Ursachen
- Contact resistance, oxidation or poor contact in the connector terminals and connections
- Damaged overhead console (OHC)
- Damaged rear reading light (RRL)
Was Sie tun können
- 1Check that the fuses are intact
- 2Try the buttons for the rear reading light and the panoramic roof sunshade and note which functions do not work
- 3Check the connectors at the overhead console and the rear reading light: loose or oxidised connectors should be cleaned and pressed in
- 4Check the LIN wire between the CEM, the overhead console and the rear reading light for chafing and pinch damage
- 5If the fault remains, have a workshop with diagnostic equipment check the overhead console and the rear reading light
Symptome, die Sie bemerken können2
- The electric sunshade in the panoramic roof does not work
- The lighting in the passenger compartment does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.