Any info on this one would be greatly appreciated.
The car will drive ok then set fault code 00575 Manifold Absolute Pressure variation from desired value. The wasgate then goes to 92% open effectively switching off the turbo and the car goes sluggish until you switch off ignition and restart then it is ok till it happens again.
The garage that has had it before has changed the Air flow meter, ECU (incorporating MAP sensor), MAP sensor vac hose, Turbo Wastgate operating solenoid valve, disconnected EGR valve, and it is still exactly the same. We have also looked for leaks in the turbo, intercooler, inlet manifold etc.
I am running out of options, anybody had this before?