Was bedeutet der Fehlercode ECM-U042E00?

Diagnose und Fehlercodedefinition für ECM-U042E00 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo V40 (2013–)). Steuergerätereparatur bei OBD Tuning.

VOLVO

ECM-U042E00 - Invalid Data Received From Generator Control Module. General Failure Information. No sub type information

System

Motorsteuergerät (ECM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

8 Modelle

S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Modelle nach Baujahr und Motor anzeigen (8)

Was bedeutet der Fehlercode?

On request from the central electronic module (CEM) over CAN, the ECM controls the alternator's charge voltage via LIN. The code is set when there is a disturbance in communication with the alternator control module (ACM). The ACM then charges at a fixed voltage instead of regulating the charge.

Mögliche Ursachen

Internal fault in another control module on the same part of the LIN network
Damaged alternator control module (ACM), which is the charge regulator

Was Sie tun können

1Check the battery and its connections, since the fault shows up as a dead or weak battery.
2Look for loose, chafed or corroded connectors at the alternator and on the wiring to it.
3Have a workshop read out the fault codes and troubleshoot the alternator control module and LIN communication with diagnostic equipment, as this requires measurement.

Symptome, die Sie bemerken können2

Dead battery
Low battery or weak electrical power

Was der Fehler beeinflussen kann1

The alternator control module (ACM) charges at a fixed voltage

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