VOLVO
CEM-U000700 - High Speed CAN Communication Bus (-) Low. General Failure Information. No sub type information
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 negative wire of the high speed CAN is shorted to earth, which disturbs communication between the control modules. The engine may have trouble starting, and performance and throttle response are affected. The fault most often lies in the high speed network wiring.
Mögliche Ursachen
- Short circuit between the negative wire of the high speed CAN and earth
Was Sie tun können
- 1Note which driving faults occur and when. This shows whether the fault follows a certain stretch of the wiring
- 2Check the high speed harness for chafing and pinch damage where it moves
- 3Check the connectors on the network for loose connections, corrosion and moisture
- 4With a diagnostic tool, read the fault codes from all control modules and start with those for the CAN network
- 5Use a multimeter to check that the negative wire has no contact with earth or the body along its length
- 6If the engine stalls while driving, avoid long journeys and have a workshop trace the fault promptly
Symptome, die Sie bemerken können4
- The engine does not start even though the starter turns
- Poor performance and lack of power
- The throttle response hesitates, surges or is jerky
- Cruise control cannot be engaged
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.