My sister phoned me panicking yesterday as her car decided to lose power on the motorway. She said she had been travelling along at 90, then all of a sudden it lost power and wouldn't go quicker than 75. She called a couple minutes later to say even with her foot to the floor it had slowed down to 60. There were no engine warning lights, temp gauge looked fine and there were no odd smells. I got her to pull off the motorway and turn the engine off to hopefully clear what I was hoping would be limp mode. That seemed to do the trick and she was able to drive home as normal. Does this sound like the symptom of limp mode on the 1.9TDI? If so, what are the common causes on these motors? I'm guessing it will be a crappy Bosch sensor or a MAF that's thrown up a fault, but unfortunately i'm a couple of hundred miles away and can't Vagcom it. Any help would be appreciated.