I have. 2015 a4 b8 2.0 tdi. It’s been having issues for a few weeks going into limp mode. Eml and flashing glow plug light. It went into Audi for a recall so they diagnosed the fault at the same time and tell me it’s the boost pressure sensor however they want nearly £400 to supply and fit. I can buy the part for £55 and I’ll have a go at it myself. Can anyone give me some insight into the location of the boost pressure sensor or a diagram. Any info is much appreciated.