Citroen C5 HPI 2.0 Exclusive - 2002 .Have the anti pollution error showing but this is intermittent. It sounds as if there maybe a tiny blow in the exhaust pipe could this be connected. Also when this error showed the computer advised me to watch for black ice - it was 70f outside ! Any ideas anybody ?

Thanks

Mark, July 2008

it may need toping up with the fuel additive if it as run low

mike, July 2008