Citroen C4 EGR Valve Defect

I have a 2010 Citroen C4 with a diesel engine, mileage 113366 km. The EGR valve seems to be defective. I'm experiencing reduced engine power, the check engine light is on, smoke during acceleration, rough engine running, higher fuel consumption, jerking, and a loud hissing sound when I accelerate. Has anyone else encountered this?

4 comment(s)

Sounds familiar. I had similar symptoms on my C4. Reduced power and a check engine light were the first signs. Did you notice any difference in fuel consumption before the other symptoms appeared?

Yes, fuel consumption definitely increased a bit before the other symptoms became obvious. Did you also experience the hissing sound when accelerating?

Okay, yeah, sounds exactly like what I had. I didn't have the hissing, but probably related. I suggest you get it checked at a workshop. It sounds like the EGR valve is jammed. I tried cleaning it, but it didn't solve the issue for long.

Thanks for the confirmation! I'll take it to the workshop then. Turns out the EGR valve was indeed defective and needed replacement. Repair cost: 355€. Hopefully, that's the end of it.

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