Mcglynn

I have a mk5 tdi 2.0gt 54plate the car has been going into limp mode and losing turbo at about 70mph, when I restart the car the fault has gone doesn’t turn a EML light on, I have changed the fuel filter as was black, changed the G62 sensors, and replaced the MAF sensor, I have taken the boost pressure sensor off and cleaned this, I have had the turbo checked and there isn’t any play in turbo and all moving good, I did have a EGR daily code but once cleared from the ECU this hasn’t returned, any advice would be welcomed