VOLVO
ECM-255B - Front heated oxygen sensor (HO2S), bank 2. Signal missing
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
2 ModelleS80 (1999–2006), XC90 (2003–)
Modelle nach Baujahr und Motor anzeigen (2)
Was bedeutet der Fehlercode?
The signal from the oxygen sensor on bank 2 is missing, but the fault lies in the engine control module (ECM) itself. It has registered an internal fault in its control of the sensor. If the fault remains, the control module is what needs replacing.
Mögliche Ursachen
- Damaged engine control module (ECM)
Was Sie tun können
- 1Clear the code and road test the car, then check whether the fault comes back
- 2Check that the battery is in good condition and that its terminals are tight
- 3Check the earth points and the connectors to the engine control module for loose contact and oxidation
- 4If the fault remains after these checks, the control module needs replacing; have a workshop do the replacement
Symptome, die Sie bemerken können1
- Malfunction indicator lamp (MIL) on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.