VOLVO
ECM-4405 - EGR control Flow too low
System
Engine Control Module (ECM)
Volvo models this fault code applies to
This fault code has different meanings depending on model, model year or engine. Select the meaning that applies to your car.
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (8)
- Volvo S60 (2001–2009)2001Engine D5244T only
- Volvo S60 (2001–2009)2002–2003Engine D5244T, D5244T2 only
- Volvo S80 (1999–2006)2001Engine D5244T only
- Volvo S80 (1999–2006)2002–2003Engine D5244T, D5244T2 only
- Volvo V70 (2000–2008)2001Engine D5244T only
- Volvo V70 (2000–2008)2002–2003Engine D5244T, D5244T2 only
- Volvo V70 XC / XC70 (2001–2007)2003Engine D5244T only
- Volvo XC90 (2003–)2003Engine D5244T only
What does this fault code mean?
Exhaust gas recirculation (EGR) controls how much exhaust gas is led back into the intake. If the flow is too low, or the valve jams shut, the fault code is set. The fault can come from a damaged EGR valve or a damaged EGR actuator, and a sticking valve can give the same symptoms.
Possible causes
- Damaged EGR valve
- EGR valve stuck in the closed position
- Damaged EGR actuator
What you can do
- 1Have you got a diagnostic tool: activate the EGR valve several times with the engine running and listen for a click from the valve to see whether it frees up
- 2Check that the intake system does not leak and that gaskets and hoses are intact
- 3Check the connector to the mass air flow sensor for contact resistance, oxidation and play
- 4Check that the wiring to the mass air flow sensor has no break
- 5Have a workshop check the EGR valve and replace it if it does not move when activated
Symptoms you may notice3
- Poorer performance
- The engine is hard to start
- Uneven idle
General guidance for car owners. Diagnosis on the car can point to a different cause.