hi all, on Saturday I have brought a car with the engine light on, I do a diagnosis, and I see the error p2563... Range/performance circuit 1 sensor position control turbocharger turbocharger... and I start to check:

the behavior of the machine ? that rises to over 4000 rpm... pressure turbine non-existent... even all the accelerated... works pretty much sucked

piping depression turbine... perfectly healthy...
sensor boost works...
egr works
the pressure sensor in the manifold works


the only abnormal behavior ? that at a minimum the actuator on the turbine does open and close and then go to sleep and the error appears...
however, if the gate and the error I put in motion and accellero the machine no problem error disappeared and perfectly compressed... air pressure diagnosis over 1800mb...
as soon as it drops below 2000 rpm... returns the actuator to make it up and down? then stops and returns the error...

I inform you that when it's up and down? you hear a puff of air... ? this normal behavior?

can you help me?