VOLVO
ECM-0031 - Front heated oxygen sensor (HO2S), bank 1 heating. Faulty signal
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (3)
Hva betyr feilkoden?
According to the engine control module, the voltage in the heater circuit of the front oxygen sensor is wrong, and that is why the code is set. The fault appears while driving, and the malfunction indicator lamp comes on while the code is active. The code does not affect drivability.
Mulige årsaker
- The signal wire is shorted to supply voltage
- The signal wire is shorted to earth
- Damaged front oxygen sensor
Hva du kan gjøre
- 1Check the wires and connectors to the oxygen sensor. Look for play, contact resistance and oxidation
- 2Measure with a multimeter that the signal wire to the heater circuit has no break and is not shorted to earth
- 3Measure with a multimeter that the signal wire to the heater circuit is not shorted to supply voltage
- 4Clear the fault code and road test the car. If it returns after these checks, have a workshop replace the front oxygen sensor
- 5Put right any wires or connectors found to be faulty before the oxygen sensor is replaced
Symptomer du kan merke1
- The malfunction indicator lamp is on
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