VOLVO
ECM-P04D900 - Closed Loop EGR Control At Limit - Flow Too Low. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine D4204T5 only
- Volvo S80 (2007–)2014–2015Engine D4204T5 only
- Volvo V40 (2013–)2015Engine D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine D4204T14 only
- Volvo V60 (2011–)2014–2015Engine D4204T5 only
- Volvo V70 (2008–)2014–2015Engine D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine D4204T5 only
What does this fault code mean?
The code concerns EGR control in closed loop, where the actual flow through the EGR system stays below the requested flow for too long. The engine control module (ECM) compares the two values and sets the code when the difference becomes too large for too long in total.
Possible causes
- The EGR valve is clogged
- The signal wire is short-circuited to ground
What you can do
- 1Check that the fuses are intact. Their location is given in the owner's manual
- 2With the ignition off, inspect the intake system for leaks and damage
- 3Clean the EGR valve and check that it and its connections are not clogged with soot
- 4Use a multimeter to check that the signal wire is not short-circuited to ground
- 5If you have a diagnostic tool, activate the EGR valve and see whether the position sensor value changes
- 6After repair, a workshop adapts the EGR valve. Clear the code and road test
Symptoms you may notice1
- The check engine lamp comes on or behaves abnormally
General guidance for car owners. Diagnosis on the car can point to a different cause.