VOLVO
ECM-25AB - 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 engine control module (ECM) has registered an open circuit in the ground wire to the oxygen sensor on bank 2. The signal is therefore missing, and the fault may lie in the ground wire or in the sensor itself.
Mulige årsaker
- Open circuit in the ground wire
- Damaged front oxygen sensor on bank 2
Hva du kan gjøre
- 1Read the code, clear it and road test the car to see whether it returns
- 2Check that the connector at the lambda sensor is fully engaged and clean, with no oxidation or contact resistance. Do not use rust solvent spray or grease
- 3Use a multimeter to check that the ground wire from the lambda sensor is unbroken all the way
- 4Look for chafed spots and breaks in the ground wire, especially where it is fixed to the body
- 5If the ground wire is intact the sensor may be damaged; have a workshop check it or replace it
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) on
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.