Was bedeutet der Fehlercode TCM-U003900?

Diagnose und Fehlercodedefinition für TCM-U003900 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Steuergerätereparatur bei OBD Tuning.

VOLVO

TCM-U003900 - Lost Communication With Engine Control Module (ECM) on communication bus "B". General Failure Information. No sub type information

System

Getriebesteuergerät (TCM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

9 Modelle

S60 (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?

The transmission control module (TCM) is receiving no communication from the engine control module (ECM) on bus B. The fault most likely lies in the wiring between the two control modules, but it can also be in the engine control module. The code gives no specific fault type, only that communication has been interrupted.

Mögliche Ursachen

Brief open circuit or short on the CAN wire linking the engine module (ECM) to the gearbox module (TCM)
Fault in the engine control module (ECM)
Incorrect signal configuration, for example if a control module has been replaced without new software being loaded

Was Sie tun können

1Read codes from the engine control module (ECM) and the central electronic module (CEM) and deal with them first
2Clear the code and see whether it comes back; if it does not, the fault was most likely temporary
3Check the connectors and wiring of the CAN network between engine and gearbox for looseness, corrosion and damage
4Have a workshop load new software into the control module if the code is only present in the gearbox

Symptome, die Sie bemerken können1

No noticeable symptoms for the driver

Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.