VOLVO
CEM-U003788 - Extended CAN Communication Bus. Bus Signal / Message Failures. Bus off
Układ
Centralny moduł elektroniczny (CEM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
2 modeleV40 (2013–), V40 Cross Country (2013–)
Pokaż modele wg rocznika i silnika (2)
Co oznacza ten kod błędu?
The control module on the extended CAN network has received or sent faulty messages and shut off its communication, which is called bus-off. The fault is caused by a short circuit between the CAN wires, and it should be located before any control module is replaced. The park assist camera, blind spot system and cross traffic alert can be affected.
Możliwe przyczyny
- Short circuit between the two CAN wires in the extended network
Co możesz zrobić
- 1Read and clear the fault codes in all control modules, road test the car and note whether the code comes back
- 2Switch the ignition off and check the extended-network CAN wires for chafing and pinch damage, especially where they are clamped
- 3With the battery negative lead disconnected, use a multimeter to confirm the two CAN wires have no contact. Twist the harness during the test
- 4If the code returns, have a workshop with diagnostic equipment check the network. Replace the CEM only if testing shows it is faulty
Objawy, które możesz zauważyć3
- Park assist camera does not work
- Blind spot monitoring (BLIS) does not function
- Cross Traffic Alert (CTA) does not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.