VOLVO
ECM-255B - Front heated oxygen sensor (HO2S), bank 2. Signal missing
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
2 modellerS80 (1999–2006), XC90 (2003–)
Vis modeller per årsmodell og motor (2)
Hva betyr feilkoden?
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.
Mulige årsaker
- Damaged engine control module (ECM)
Hva du kan gjøre
- 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
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) on
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.