VOLVO
ECM-P014084 - O2 Circuit No Activity Detected (Bank 1, Sensor 2). Bus Signal / Message Failures. Signal below allowable range
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleS60 (2011–), S80 (2007–), V70 (2008–)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo S60 (2011–)2011–2012Nur Motor: B5254T5
- Volvo S80 (2007–)2007–2008Nur Motor: B5254T6
- Volvo S80 (2007–)2009Nur Motor: B5254T6, B5254T8
- Volvo S80 (2007–)2010–2011Nur Motor: B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Nur Motor: B5254T10
- Volvo V70 (2008–)2008Nur Motor: B5254T6
- Volvo V70 (2008–)2009Nur Motor: B5254T6, B5254T8
- Volvo V70 (2008–)2010–2011Nur Motor: B5254T10, B5254T11
- Volvo V70 (2008–)2012Nur Motor: B5254T10
Was bedeutet der Fehlercode?
Although the code is named for a bus or message fault, it concerns the rear oxygen sensor in bank 1, sensor 2, which does not show a lean mixture in time. The engine control module (ECM) checks the sensor and changes the mixture if it does not show lean. At fuel cut-off the sensor should show lean, and if the switch takes too long the code is set.
Mögliche Ursachen
- Leak in the exhaust system
- Damaged rear oxygen sensor
Was Sie tun können
- 1Read the code, clear it and road test the car to see whether it comes back
- 2Look for air leaks in the exhaust system, especially at joints and gaskets
- 3Avoid rust solvent spray and grease in the connector to the rear sensor
- 4If the exhaust is sealed, try a new rear oxygen sensor; a damaged sensor can also set the code
Symptome, die Sie bemerken können1
- Check engine light (MIL) on
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.