Passat TDI limp mode

Hi there, I know from reading several threads that many people have a problem with their TDi`s be it MAF sensors or perished pipes etc. Just thought I would let you all know, I recently bought a 52 plate 130 tdi and it was running very poorly. I changed the MAF sensor to no avail and after spending the best part of a day checking every pipe, connection and wire I found a perished wire which runs to the MAF sensor. I soldered it back together and now the car works fine with plenty of power. Wasn`t easy to find so might be another option for some of you. Great forum..