hi. im new to the forum. ive got a 2005 a3 2.0tdi dsg. i have a problem that ony happens when ive been on a drive abot 70mph when i stop and try to pull off again it looses power to about 45mph max. if i turn the engine off then back on its fine again. there are no lights on the dash but ive had it plugged in at my local garage and was told the fault code is p0234. but they hadnt got the time to look at the car for a week or so. has anyone else had this problem.?. any help please.. thanks..