VOLVO
ECM-P014085 - O2 Circuit No Activity Detected (Bank 1, Sensor 2). Bus Signal / Message Failures. Signal above allowable range
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
3 modellerS60 (2011–), S80 (2007–), V70 (2008–)
Vis modeller per årsmodell og motor (9)
- Volvo S60 (2011–)2011–2012Kun motor: B5254T5
- Volvo S80 (2007–)2007–2008Kun motor: B5254T6
- Volvo S80 (2007–)2009Kun motor: B5254T6, B5254T8
- Volvo S80 (2007–)2010–2011Kun motor: B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Kun motor: B5254T10
- Volvo V70 (2008–)2008Kun motor: B5254T6
- Volvo V70 (2008–)2009Kun motor: B5254T6, B5254T8
- Volvo V70 (2008–)2010–2011Kun motor: B5254T10, B5254T11
- Volvo V70 (2008–)2012Kun motor: B5254T10
Hva betyr feilkoden?
Although the code is named for a bus or message fault, it concerns the signal from the rear oxygen sensor in bank 1, sensor 2. The control module checks that the sensor shows a rich mixture and changes the mixture if it does not. At fuel cut-off the sensor should also show lean, and if the switch takes too long the code is set.
Mulige årsaker
- Leak in the exhaust system
- Damaged rear oxygen sensor
Hva du kan gjøre
- 1Read the code, clear it and road test the car to see whether it comes back
- 2Check the exhaust system for air leaks before replacing anything
- 3Check the connector to the rear sensor for contact resistance and oxidation
- 4If no leak is found, replace the rear oxygen sensor
Symptomer du kan merke1
- Check engine light (MIL) on
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