VOLVO
ECM-P010122 - Mass or Volume Air Flow Circuit Range/Performance. General Signal Failures. Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
The ECM estimates the air mass it expects from a range of parameters and checks that estimate against the reading the mass air flow sensor gives. The code is stored once the air mass correction factor has become too low and the lambda adaptation has drifted above or below a fixed figure. The fault is mainly noticed as a lit eco indicator and reduced performance.
Possible causes
- Contact resistance and oxidation in the mass air flow sensor connector terminals
- Air leak in the intake system
- Blocked intake system
- Damaged mass air flow sensor
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2Check that the mass air flow sensor connector is fully engaged and free from oxidation
- 3Look for leaks in the hoses and joints between the mass air flow sensor and the throttle body, especially cracks and loose clamps
- 4Look for blockages in the intake system, for example deposits on the throttle body
- 5If the fault remains after the intake system is checked, have a workshop check the mass air flow sensor
Symptoms you may notice2
- Eco indicator lamp lit
- The car runs poorly
What the fault can affect3
- Calculated boost pressure and calculated air mass are used
- Rear lambda sensor control is switched off
- Misfire diagnosis is switched off
General guidance for car owners. Diagnosis on the car can point to a different cause.