engine management light

[shaddow]

So some random reason my management light has shown its ugly face.
any common reasons why this happens?
put a exhaust system on it couple of days before if that makes any difference.
HELP smileys/smiley19.gif

[Ratty]

damaged lambda? or if its a 2 wire system you havent connected the second one, if the light is on the take it to citroen as they can tell you straight away

[shaddow]

cheers dude! its booked in.