VOLVO
ECM-P040422 - Exhaust Gas Recirculation Control 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:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (6)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
Although the code is named as a too-high signal, the condition is a flow that is too low in the EGR system. The ECM monitors the EGR function and sets the fault when the flow is too low. The cause may be an air leak, or a blocked or damaged EGR valve.
Possible causes
- Air leak in the intake system
- Blocked or clogged EGR valve
- Damaged EGR valve
What you can do
- 1Check the intake system for air leaks, such as loose hoses and connections
- 2Check that the EGR valve or its connections are not clogged with soot
- 3Clean the EGR valve of dirt and soot if needed
- 4Look for damage to the seals of the EGR valve
- 5If you have a diagnostic tool, read the EGR valve position at idle and see that it changes under throttle
- 6If the fault remains, have a workshop check the EGR valve and the intake system
Symptoms you may notice2
- The engine performs worse than usual
- The idle is uneven
General guidance for car owners. Diagnosis on the car can point to a different cause.