VOLVO
ECM-259B - 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 signal wire from the part of the oxygen sensor on bank 2 that measures oxygen content in the exhaust. The signal is therefore missing in the control module.
Mulige årsaker
- Contact resistance or oxidation on the signal wire
- Break in the signal 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 oxide. Do not use rust solvent spray or grease
- 3Use a multimeter to check that the signal wire runs unbroken from the sensor to the control module
- 4Look for chafing and breaks in the signal wire, especially near the exhaust system
- 5If the connectors and wiring are 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.