VOLVO
ECM-123B - Air mass. Signal 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 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.
Mögliche Ursachen
- 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
Was Sie tun können
- 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
Symptome, die Sie bemerken können1
- The malfunction indicator lamp comes on
Was der Fehler beeinflussen kann3
- Boost pressure is calculated instead of 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.