Citroen C3 electrical issues

Hi, I have a 2021 Citroen C3, diesel engine, with 102075 km. Recently, I've been getting an error message on the speedometer. The diagnostic tool also shows a stored error. Sometimes the engine is a bit weak to start, and generally, things seem a bit off electrically. Could it be related to a faulty auxiliary battery?

4 comment(s)

I had similar electrical issues with my Citroen C3 as well. Is the battery actually charging? My car was showing similar symptoms related to voltage drop because the auxiliary power wasn't sufficient. Does it happen regularly?

Thanks for your response. How did you figure out it was the auxiliary battery? Was it just the error codes or did you check something specific? I'm not that savvy with car electronics, to be honest.

In my case, the error codes pointed to the auxiliary battery, and after testing it with a multimeter, it was clear the battery wasn't holding a charge. Given your symptoms, I would recommend taking it to a workshop for a proper diagnosis.

Okay, thanks a lot for the help! I'll book it in for a checkup. Hopefully, it's just the battery. I saw a replacement would cost me around 290€, which I hope will solve it.

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