VOLVO
ECM-258D - Front heated oxygen sensor (HO2S), bank 2. 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) detects that the signal wires to the oxygen sensor on bank 2 are shorted to ground, which shows up as a signal that is too low. The code is then set.
Mulige årsaker
- Signal wires shorted to ground
- Damaged oxygen sensor on bank 2
Hva du kan gjøre
- 1Clear the code, road test the car and then check whether it comes back
- 2Look at the connector at the lambda sensor: it should be seated firmly and free from moisture and oxide. Avoid rust solvent spray and grease
- 3With the control module disconnected, use a multimeter to check that the signal wires have no contact with ground (chassis)
- 4Look for chafed and pinched spots on the wires, especially where they may have rubbed against an edge
- 5If the wires are intact but the fault remains, have a workshop check or replace the lambda sensor
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) on
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