VOLVO
ECM-122C - Mass air flow (MAF) sensor. Flow too high
System
Motorstyring (ECM)
Volvo-modeller feilkoden gjelder for
Gjelder følgende modeller:
4 modellerC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Vis modeller per årsmodell og motor (9)
- Volvo C30 (2007–2013)2007Kun motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Kun motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Kun motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Kun motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo S40 (2004–2013)2008Kun motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Kun motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Kun motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Kun motor: B5254T7
Hva betyr feilkoden?
The engine control module has found that the air mass measured by the mass air flow sensor is higher than the calculated value. The fault may lie in the wiring or in the sensor itself.
Mulige årsaker
- Signal wire short-circuited to supply voltage
- Open circuit in the ground lead
- Damaged mass air flow sensor
Hva du kan gjøre
- 1Check the mass air flow sensor connector and wiring for chafing and loose contacts
- 2With your own diagnostic tool, read the air flow with the engine off and ignition on; the reading should be close to zero
- 3Use a multimeter to check that the signal wire has no contact with supply voltage and that the ground lead is not broken
- 4If the fault remains, have a workshop check the mass air flow sensor
Symptomer du kan merke2
- The malfunction indicator lamp comes on
- The engine performs worse
Hva feilen kan påvirke3
- Boost pressure is calculated rather than measured
- Rear oxygen sensor control is switched off
- Misfire detection is switched off
Generell veiledning for bileiere. Feilsøking på bilen kan peke på en annen årsak.