Citroen C5 electronics

Car: Citroen C5
Model Year: 2002
Categories: Electrics, ECU, Warnings & Lights
Bought the C5 about 3 yrs ago and have had electronic problems almost from the start. This year we had the exhaust fixed in Feb., the transmission fixed in June and I've just had a service done. I had an Anti Pollution fault light come on all the time, followed immediately by a gear fault so that's when we had the gearbox fixed. (I had been driving it with the light coming on for about 10-11 months but it was getting worse.) When I took it in for the service it was time for a timing belt change so that happened, together with a new water pump. All the lights were extinguished and I was a happy man - for a whole day!

Now I've got the engine light and services light on my dash. Took it back to the mechanic and he doused the lights for me and checked everything. He told me that it could be from when I had the exhaust done because it keeps telling him that it's an ageing cat. That can't be right because the cat was replaced when they did the exhaust.

I don't know what to do or who to take it to and I'm no mechanic. I change oil/water and that's about it. Any help would be appreciated.

I don't actually think anything's wrong, it's just those damn lights. Same problem as everyone else they have to work backwards from the problem and it costs a lot of money.

Look forward to hearing from you.
Posted: Oct 18, 2010 (14 years ago)
Is the cat a genuine or aftermarket one? Aftermarket cats can give this fault
Posted Oct 18, 2010 (14 years ago)
hi, had similiar probelems with mine and even worse, try putting a new battery in the car because the old battery may be giving off the wrong voltages which causes lights and messages to flash up.
Posted Jan 14, 2011 (13 years ago)

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