VOLVO
CEM-6C55 - KVM communication. Faulty value
System
Sentral elektronikk (CEM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
5 modellerC30 (2007–2013), C30 Electric (2011–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Hva betyr feilkoden?
CEM checks the start blocking system through encrypted communication with several control modules, including the keyless vehicle module (KVM). The fault code is set when CEM receives an incorrect reply from the KVM, which happens because the immobilizer codes do not match. The engine then cannot be started reliably.
Mulige årsaker
- Wrong coding in the keyless vehicle module (KVM)
- Incorrect programming of the CEM
Hva du kan gjøre
- 1If the starter motor does not turn, troubleshoot the starting system first, for example the battery and fuses
- 2Programming and software loading are done by a workshop, so ask a workshop to check that the KVM and the CEM have matching codes
- 3If any control module has recently been replaced, ask the workshop to load new software into it
- 4If new software in the KVM does not solve the fault, the KVM may be faulty and a workshop should replace it
Symptomer du kan merke2
- Starter motor does not turn
- Engine does not start or starts unreliably
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.