VOLVO
ECM-250D - Front heated oxygen sensor (HO2S), bank 2, heating. Signal too low
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 low, the code is stored. The fault can lie in the heater wiring or in the sensor itself.
Mulige årsaker
- Short circuit in the preheating circuit
- Damaged front heated oxygen sensor
Hva du kan gjøre
- 1Read and note the code, clear it and road test to see whether it returns
- 2Follow the heater wiring from the bank 2 oxygen sensor and look for chafing, damage and places where the wires may have touched each other
- 3Look at the sensor connector. Rust solvent spray and grease must not be used on it
- 4If the wiring is intact, have a workshop try a new front oxygen sensor
Symptomer du kan merke1
- The malfunction indicator lamp (MIL) is lit
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.