VOLVO
CEM-U300813 - Control Module Ground "A". General Electrical Failures. Circuit open
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?
On the V40, the central electronic module (CEM) monitors whether it has access to electronic earth. The fault is stored when the module has no electronic earth, for example after a break in the earth cable. When there is a break, affected relays in the car clatter.
Możliwe przyczyny
- Open circuit in the cable for electronic earth
Co możesz zrobić
- 1Check the electronic earth cable at the module and at the body: it should be tight and free from rust
- 2Follow the cable and look for breaks, chafing and pinch damage, especially where it moves
- 3Use a multimeter to check the cable has contact with the body; if not, replace the cable or have a workshop repair it
- 4Listen when the ignition is switched on: if relays clatter, that is a clear sign the earth connection is failing
- 5If the fault returns after repair, have a workshop with diagnostic equipment check the module
Objawy, które możesz zauważyć5
- The car performs poorly and lacks power, especially when pulling away
- The engine does not start, or cranks without starting
- The car hesitates, surges or feels jerky when driving
- Cruise control cannot be engaged
- Gauges show wrong readings or do not work
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.