VOLVO
ECM-P010121 - Mass or Volume Air Flow Circuit Range/Performance. General Signal Failures. Signal too low
System
Motorsteuergerät (ECM)
Volvo-Modelle, für die dieser Fehlercode gilt
Gilt für folgende Modelle:
3 ModelleS60 (2011–), S80 (2007–), V70 (2008–)
Modelle nach Baujahr und Motor anzeigen (9)
- Volvo S60 (2011–)2011–2012Nur Motor: B5254T5
- Volvo S80 (2007–)2007–2008Nur Motor: B5254T6
- Volvo S80 (2007–)2009Nur Motor: B5254T6, B5254T8
- Volvo S80 (2007–)2010–2011Nur Motor: B5254T10, B5254T11, B5254T8
- Volvo S80 (2007–)2012Nur Motor: B5254T10
- Volvo V70 (2008–)2008Nur Motor: B5254T6
- Volvo V70 (2008–)2009Nur Motor: B5254T6, B5254T8
- Volvo V70 (2008–)2010–2011Nur Motor: B5254T10, B5254T11
- Volvo V70 (2008–)2012Nur Motor: B5254T10
Was bedeutet der Fehlercode?
The ECM works out the air mass it expects from several parameters and compares that with the value from the mass air flow sensor. The code is stored when the air mass correction factor becomes too high while the lambda adaptation is above or below a set value. While the fault is present, calculated boost and air mass values are used and parts of the emission control are switched off.
Mögliche Ursachen
- Contact resistance and corrosion in the mass air flow sensor connector terminals
- Air leak in the intake system
- Blocked intake system
- Damaged mass air flow sensor
Was Sie tun können
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check that the connector at the mass air flow sensor is fully engaged and free from corrosion
- 3Look for leaks and cracks in the hoses and joints between the mass air flow sensor and the throttle body
- 4Look for blockages in the intake system, for example dirt on the throttle or a clogged air filter
- 5If the fault remains after the intake system has been checked, have a workshop check the mass air flow sensor
Symptome, die Sie bemerken können1
- Eco indicator lamp lit
Was der Fehler beeinflussen kann3
- Calculated boost pressure and calculated air mass are used
- Rear lambda sensor control is switched off
- Misfire diagnosis is switched off
Allgemeine Hinweise für Fahrzeughalter. Die Diagnose am Fahrzeug kann eine andere Ursache zeigen.