Had this fault come up last month and checked out by AA vw specialist, it's ran ok for 850miles and now back up.... obviously have searched and understand it's insufficient flow but took a pic of the values on his test and wondered if the readings give any indication that a flush may help..? Or is it just replace or map out...? A local vw indie has quoted £1450 saying that the pipes need doing at the same time to qualify for the 2 year warranty.... help opinions greatly appreciated 
