VOLVO
CEM-U004000 - Extended CAN Communication Bus (+) Low. General Failure Information. No sub type information
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 fault code means that the positive (low) wire in the extended CAN network has contact with ground. The network links the park assist camera, blind spot system and cross traffic alert with the rest of the car. Ground contact on the wire disturbs the signals, and the systems on the network can then stop working.
Możliwe przyczyny
- Chafed or pinched wiring lets the positive extended-network wire touch ground
Co możesz zrobić
- 1Read the fault codes in all control modules, clear them and road test the car to see whether the code returns
- 2Switch the ignition off and inspect the positive wire of the extended network for chafing, pinch damage and loose connectors
- 3With the battery negative lead disconnected, use a multimeter to confirm the positive wire has no contact with the car body. Twist and wiggle wiring during the test
- 4If the code returns, have a workshop with diagnostic equipment check the voltage drop in the wires. 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.