VOLVO
ECM-P117900 - Fuel/Air Mixture Unstable during Quick Test of Fuel Trim. General Failure Information. No sub type information
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?
The code is set during the workshop quick test of lambda control, when the fuel-air mixture varies considerably for a certain time. The test is used to find air leaks or low fuel pressure, among other things. An unstable mixture may mean there is a fault that could cause lambda control codes during normal driving.
Mulige årsaker
- Damaged oxygen sensor (HO2S)
- Air leak in the intake system
- Air leak in the exhaust system
- Damaged mass airflow meter
- Incorrectly calculated ethanol content
Hva du kan gjøre
- 1Look for air leaks in both the intake and the exhaust system, for example at hoses and joints
- 2Inspect the mass airflow meter for damage and check that its connector is firmly seated
- 3If the fault remains after these checks, have a workshop check the oxygen sensor and the ethanol calculation
Symptomer du kan merke1
- No noticeable symptoms for the driver
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.