VOLVO
CEM-U001088 - Medium Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off
System
Zentralelektronik (CEM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
9 ModelleS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Modelle nach Baujahr und Motor anzeigen (9)
Was bedeutet der Fehlercode?
Faulty messages are sent or received on the medium speed CAN, and the module has switched itself off the network, so-called bus-off. The cause is most often a break in one or both CAN wires in part of the network, or a short between the internal CAN wires.
Mögliche Ursachen
- Open circuit in one or both CAN wires in part of the medium speed network
- Short circuit between the internal CAN wires
Was Sie tun können
- 1Clear the fault codes, start the car and read them again. If bus-off returns straight away, the fault is active
- 2Check the harness on the medium speed network for breaks, chafing and pinch damage
- 3Check the network connectors for loose connections, corrosion and moisture
- 4With a diagnostic tool, read the fault codes from all control modules. The module that has gone into bus-off often shows no other faults
- 5Gently flex the harness with the ignition on and see whether the fault code changes
- 6Have a workshop measure the resistance on the network, since the network must be separated
Symptome, die Sie bemerken können4
- The instrument and button lighting does not work
- Some gauges show faults
- The central locking does not work
- The climate control does not work
Was der Fehler beeinflussen kann2
- The module switches itself off (bus-off) and stays off until its power supply is cut
- At the next power-up the module makes new attempts to communicate
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.