VOLVO
BCM-U011400 - Failed communication with differential electronic module (DEM). General malfunction information. No information on malfunction type
System
Bremssteuergerät (BCM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
1 ModellXC90 (2003–)
Was bedeutet der Fehlercode?
The brake control module (BCM) is not receiving confirmation from the all-wheel drive control module (DEM) that the all-wheel drive is working. The fault applies to cars with all-wheel drive and DSTC. The stability function must not be activated in all-wheel drive, so when the signal is missing the stability systems are switched off. The fault most often lies in the all-wheel drive module or in the data network.
Mögliche Ursachen
- Fault in the all-wheel drive control module (DEM)
- Interference or intermittent breaks on the CAN network
Was Sie tun können
- 1Read codes in the central electronic module first, as this fault often follows other communication faults
- 2Read and troubleshoot codes in the all-wheel drive control module
- 3If the fault is intermittent only, clear the code and check that it does not return
- 4Check that the all-wheel drive module has the latest software; programming is carried out by a workshop according to procedure
- 5The brake system is safety-critical, so have a workshop carry out all work on the network and the modules
Symptome, die Sie bemerken können4
- General warning lamp on
- Traction control does not work
- Stability function does not work
- Anti-skid function does not work
Was der Fehler beeinflussen kann3
- Stability control is disabled
- Traction control is disabled, including all-wheel drive traction control, without any warning lamp coming on
- Dynamic stability control (AYC) is disabled
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.