VOLVO
ECM-122C - Mass air flow (MAF) sensor. Flow too high
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
4 ModelleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo C30 (2007–2013)2007Nur Motor: B5254T3
- Volvo C30 (2007–2013)2008–2013Nur Motor: B5254T7
- Volvo C70 (2006–2013)2006–2007Nur Motor: B5254T3
- Volvo C70 (2006–2013)2008–2013Nur Motor: B5254T7
- Volvo S40 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo S40 (2004–2013)2008Nur Motor: B5254T3, B5254T7
- Volvo S40 (2004–2013)2009–2012Nur Motor: B5254T7
- Volvo V50 (2004–2013)2005–2007Nur Motor: B5254T3
- Volvo V50 (2004–2013)2008–2012Nur Motor: B5254T7
Was bedeutet der Fehlercode?
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.
Mögliche Ursachen
- Signal wire short-circuited to supply voltage
- Open circuit in the ground lead
- Damaged mass air flow sensor
Was Sie tun können
- 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
Symptome, die Sie bemerken können2
- The malfunction indicator lamp comes on
- The engine performs worse
Was der Fehler beeinflussen kann3
- Boost pressure is calculated rather than measured
- Rear oxygen sensor control is switched off
- Misfire detection is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.