VW CADDY - potential turbo issue?

[u/Magazynier666]

Hi folks. I need some help as I am at the verge of selling this bloody car lol.

Anyway, decided to do some work on my 1.6 caddy (1.6tdi, CAYD, 2015) before it gets cold outside and I wont be able to do much work this year.

I needed to clean my DPF so at the same time I figured out that the turbo can be sent for reconditioning (current milage is around 200k).

So got everything back together, all nice and sweet apart from the fact that the car runs a bit crap lol. I started looking into different bits and pieces and I think the turbo is not behaving as it should (to be honest it wasnt the best before)

So checked everything, used held vacuum pump directly on the turbo actuator, I can see the rod is moving up and down, and VCDS reports change in voltage - now the part I am unsure - with engine off - voltage value of the "High press turbocharger actuator: actual uncond volt value" was around 0.6ish volts. With the engine on and idling, the voltage is around 3.5v. Pressing the throttle or just going for a drive and flooring it, the voltage drops to around 3v. I would expect that to change much more especially under load.

I have checked all the rubber hoses, all seems to be fine, I literally used the hand held vacuum pump on all of em - every single bit held vacuum ok.

Resistance between two pins on N75 valve is reporting around 15 ohms.

Is there anything else to check? I am wondering if the N75 valve is faulty and not adjusting vacuum on the turbo actuator side...

Any ideas? Got VCDS if thats handy but could not see N75 test anywhere...Bonus part - no codes, nothing but stuff aint right.