VOLVO
ECM-0037 - Rear heated oxygen sensor (HO2S), bank 1 heating. Faulty signal
System
Motorstyring (ECM)
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Gjelder følgende modeller:
3 modellerC30 (2007–2013), S40 (2004–2013), V50 (2004–2013)
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Hva betyr feilkoden?
The engine control module checks the heating of the rear oxygen sensor on bank 1 and treats incorrect voltage in the heater circuit as a fault. Common causes are a signal wire that is shorted or broken, and sometimes a damaged oxygen sensor.
Mulige årsaker
- Signal cable shorted to supply voltage
- Signal cable shorted to ground
- Damaged rear oxygen sensor
Hva du kan gjøre
- 1With the ignition off, check the rear oxygen sensor contacts for looseness, contact resistance and oxidation
- 2With the connector unplugged and the ignition off, use a multimeter to check that the signal wire does not break when you move the harness
- 3Use a multimeter to check that the signal wire has no contact with ground (the body)
- 4If the fault remains after erasing codes and a test drive, although the wiring is sound, have a workshop check and replace the oxygen sensor if needed
Symptomer du kan merke1
- Malfunction indicator lamp (MIL) lights up
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