DS3 Engine Power Loss

Hi, I'm having trouble with my 2011 Citroen DS3 diesel. It's got 196035 km on the clock. Recently, I've noticed a significant reduction in engine power. I ran a diagnostic check and it's showing an error stored in the error memory related to the engine control unit. Could a defective main relay cause this? Any ideas before I start replacing parts?

4 comment(s)

Hey, I have a DS3 too, and I had something similar happen a while back. Reduced power and error codes popping up. Did you try a system reset? Sometimes that clears things up.

Thanks for the quick reply! I haven't tried a system reset yet. How exactly did you perform the reset? Was it a specific procedure, or just disconnecting the battery?

I didn't do it myself. I took it to a workshop, they sorted it out. Better safe than sorry with the ECU, you know?

It turned out to be the main relay, just as I suspected. Replacing it and clearing the error codes seems to have fixed the issue. Cost me about 120€ for the part and labor. Thanks for the advice!

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