VOLVO
ECM-250C - Front heated oxygen sensor (HO2S), bank 2, heating. Signal too high
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) checks the resistance in the preheating circuit of the front oxygen sensor on bank 2. If the resistance is too high, the code is stored. The cause can be poor contact at the connections or a damaged sensor.
Mulige årsaker
- Contact resistance and oxidation at the connections
- Damaged front heated oxygen sensor
Hva du kan gjøre
- 1Read the code, clear it and road test to see whether it comes back
- 2Look at the oxygen sensor connector on bank 2 for oxidation and loose connections. Rust solvent spray and grease must not be used on it
- 3If possible, measure from the cable side of the connector so it is not damaged
- 4If the connector is clean but the fault remains, have a workshop try a new front oxygen sensor
Symptomer du kan merke1
- The malfunction indicator lamp (MIL) is lit
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