VOLVO
CEM-U004100 - Extended CAN Communication Bus (+) High. 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?
The fault code means that the positive (high) wire in the extended CAN network has contact with voltage. The network links the park assist camera, blind spot system and cross traffic alert with the rest of the car. Voltage on the wire disturbs communication, and the systems can stop working until the contact is gone.
Mögliche Ursachen
- Wiring that has chafed or been pinched lets the positive extended-network wire touch voltage
Was Sie tun können
- 1Read and note the fault codes in the control modules, clear them and road test the car
- 2Switch the ignition off and check the wiring for chafing, pinch damage and connectors that are loose or corroded
- 3Use a multimeter to confirm the positive wire has no contact with voltage, and wiggle wiring and connectors during the test
- 4If the code returns, have a workshop with diagnostic equipment measure the voltage drop between modules. Replace the CEM only if testing shows it is faulty
Symptome, die Sie bemerken können3
- Park assist camera does not work
- Blind spot monitoring (BLIS) does not function
- Cross Traffic Alert (CTA) does not work
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.