I've just had exactly the same experience this week. Car went into limp mode so took it to a dealer in London for reassurance that it was safe to drive home (120 miles).
They reported that it was showing low pressure boost and recommended a new turbo. Spoke to my local dealer in Yeovil who said they were very busy and couldn't even look at it for 16 days even though it is covered by used car warranty. Obviously need the car to earn a living so took it to my local village garage who have maintained my cars for 11 years and still know the meaning of customer service. They said Skoda were talking rubbish, there was nothing wrong with the turbo just needed the actuator replacing which they did in a couple of hours saving me something like £1,200 in the process!
The worrying thing is that TPS had the part on the shelf, so it's obviously a known problem especially as the car has only done 65,000 miles. I don't know if it's worth talking to Skoda for some contribution or not or just putting it down to experience.
