VOLVO
ECM-P228122 - Air Leak Bewteen MAF and Throttle Body. 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 engine control module (ECM) compares the measured charge pressure before the throttle with the calculated charge pressure after the throttle. The code is set when the ratio becomes incorrect, here with a signal that is too high. An air leak after the turbocharger, or a loose or damaged charge pressure sensor, may be behind it.
Possible causes
- Air leak between the turbocharger and the throttle unit
- Loose charge pressure sensor, which measures atmospheric pressure
- Damaged charge pressure sensor
What you can do
- 1Clear the code, drive the car and read again to see whether it returns
- 2Check that the charge pressure sensor is firmly fitted and has not come loose
- 3Look for an air leak in the intake system between the turbocharger and the throttle unit
- 4If nothing is found, try a new charge pressure sensor
- 5If the fault remains, have a workshop diagnose further
Symptoms you may notice1
- Poor performance
What the fault can affect1
- Boost pressure is lower than normal
General guidance for car owners. Diagnosis on the car can point to a different cause.