VOLVO
ECM-123B - Air mass. Signal 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 the air mass correction value rising too far, while the lambda adaptation sits outside a set range. The code is then set. The fault may come from poor contact, a leak in the intake, a blocked intake or a damaged air mass sensor.
Mulige årsaker
- Oxidation and contact resistance in the connectors of the mass air flow sensor
- Air leakage in the intake system
- Blocked intake system
- Damaged mass air flow sensor
Hva du kan gjøre
- 1Clean the contacts at the mass air flow sensor connector and check for play, contact resistance and oxidation
- 2Check the hoses and joints between the mass air flow sensor and the throttle unit for leaks and damage
- 3Look for contamination in the throttle housing and clean it if needed
- 4If the fault remains, have a workshop check the mass air flow sensor
Symptomer du kan merke1
- The malfunction indicator lamp comes on
Hva feilen kan påvirke3
- Boost pressure is calculated instead of 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.