Was bedeutet der Fehlercode ECM-U000188?

Diagnose und Fehlercodedefinition für ECM-U000188 (Volvo S60 (2011–), Volvo S80 (2007–), Volvo S80 (2007–)). Steuergerätereparatur bei OBD Tuning.

VOLVO

ECM-U000188 - High Speed CAN Communication Bus. Bus Signal / Message Failures. Bus off

System

Motorsteuergerät (ECM)

Volvo-Modelle, für die dieser Fehlercode gilt

Gilt für folgende Modelle:

3 Modelle

S60 (2011–), S80 (2007–), V70 (2008–)

Modelle nach Baujahr und Motor anzeigen (9)

Was bedeutet der Fehlercode?

The engine control module (ECM) has switched itself off on the high speed CAN network, which is called bus-off. The code is set when the module notices that CAN communication is disturbed, either by another control module or by its own messages.

Mögliche Ursachen

Short circuit between the CAN wires
Open circuit in one of the CAN wires
Internal fault in another control module on the same part of the CAN network
Internal fault in the ECM

Was Sie tun können

1Read the codes in other control modules, since another module disturbing the network can set its own codes
2Use a multimeter to check that the CAN wires have no break and no short to each other
3If you have a diagnostic tool: switch the ignition off and on and read whether the code comes back
4Have a workshop determine whether the engine control module or another module on the CAN network is at fault

Symptome, die Sie bemerken können4

Cruise control does not work at all
The engine bucks on acceleration
The engine shudders heavily after engine braking
Uneven idling

Was der Fehler beeinflussen kann3

The engine control module switches itself off on the network (bus-off)
The engine control module stays off until the voltage supply has been broken
When the voltage is switched on again, the engine control module makes new attempts to communicate

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