Vectra C 2.2 DTI 2002: Solenoid Valve Bosch 0 928 400 536, Power Loss & Emergency Mode

Hello
my car is vectra c 2.2dti 125km 2002 I have a problem with the solenoid valve (I think so) bosch 0 928 400 536 the symptoms of the car lost its power from below, it accumulates poorly, after adding gas to the floor after a while it enters the emergency mode. I think it this valve, how I disconnected it and the hoses connected it, the car gathers normally, it does not enter the emergency mode, I will add that this valve heats up terribly. The valve has a filter screw at the bottom after removing the Allen key, I turned it but it does nothing, I will add that error P0234 was popping up earlier - Charging pressure control circuit, negative deviation.

Rather something with the turbine is going on, geometry to check. If you connect the hoses, turn on the turbine to the max, it should reload and emergency mode, if this does not happen, then something is wrong.

These types of valves are very simple to check, you only need to watch out for 2 things - the supply voltage (12V, but in rare cases it can be 5V) and the polarization of this voltage (some have a built-in surge diode). Without power, the OUT connector should be open (outlet out through the filter), and the VAC blocked, after supplying power, there should be a "transition" between VAC and OUT.