C2 Alarm System Error

My 2004 Citroen C2 with a gasoline engine has an anti-theft alarm issue. At 165155 km, the alarm system is throwing an error and is non-functional. I suspect a coding issue, maybe with the alarm system configured to activate optical locking via the indicators. Anyone seen this?

4 comment(s)

I also own a C2 and had similar alarm problems. Did this start after a battery issue, or did you notice any other electrical weirdness beforehand?

Thanks! I did have a flat battery about a month ago. Could that be the cause of the anti-theft system problem? Should I go to a workshop, or is there an easier fix?

Yes, a flat battery can definitely scramble things. It sounds like the immobilizer might have glitched. I would advise getting it checked at a workshop, they'll likely need to recode something.

Thanks for the advice, a workshop visit fixed it. The system needed re-coding, and it cost 45€. Thanks again for the help!

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