if it was done at dealers they normally give you an invoice for what was found, the fault should be on that if not ring them up and ask for the specific code, if putting your foot down triggers it then im assuming its a requested pressure not met fault but im guessing, is the car driving ok or is its performance reduced or anything?
could be anything from fuel filter to fuel pump, but take it to a vag indi, i was recently getting fuel cuts and misfires scanned with vcds found nothing even though it was running on 3 cylinders at 1 stage, vag specialist found misfires on 2 cylinders but only on exhaust side so after new injectors running like a dream now, when was your cam follower last changed?
