:o I have a 2.2 HDi C5 and at present i am recieving a message on the display screen telling me to 'unblock diesel filter.' I have had a quick word with the garage and was informed "Oooo!, this is going to cost about £300 to put right." he said, rubbing his hands with glee. Is this a fair price? Or is my lovely wife being overly tight with the purse strings? :D