Hello, I hope I can help. The same sort of thing has happened to me on my cietroen c2. I was driving and it came up with "gearbox faulty" "Serv" and then it would not go up further than gear 2. I have taken it back to citroen and they have diagnosed a virus with the gearbox computer system which they have now fixed. I googled this and was astonished to find that hackers actually put virus's into peoples cars via bluetooth, which my car has, not that I have used bluetooth I don't think. Kind regards.
Helena Tremain
March 2009
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