VOLVO
CEM-U300813 - Control Module Ground "A". General Electrical Failures. Circuit open
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?
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.
Mögliche Ursachen
- Open circuit in the cable for electronic earth
Was Sie tun können
- 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
Symptome, die Sie bemerken können5
- 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
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.