High Boost Pressure: The Eternal Problem

Hello everyone.

First, I'd like to introduce myself.

I drive a Seat Leon TDI.

Engine: ASV, 110 horsepower.
90,000 km
Year of birth: 2001.

Regarding my actual problem.

Since I've owned the vehicle, I've experienced complete power loss at intervals of about 3-5 weeks, typically around 3500-4000 RPM. Because this happened very rarely, I initially dismissed the problem. However, as the issue started occurring more frequently, especially during acceleration, I decided to investigate it more thoroughly.
The problem is well-known to everyone.
The error log indicated the usual "boost pressure control limit exceeded" error. I then ran a diagnostic log and clearly saw that the boost pressure control system was no longer functioning correctly, which triggered the limp-home mode (see Log 2).
www.qpm.ch/2.xls

Unfortunately, I had to start my military service at that exact moment, and I took the vehicle to a SEAT "specialist workshop," which turned out to be a big mistake later on.
I gave him my experiences and the log, asking him to take a look at the matter.
The following week, I was informed that the error had been fixed, and it was the turbocharger pressure control valve (N75). I was thrilled and drove around, but two days later, the car went into limp mode again. The mechanic still insists that he fixed the problem and now wants to charge me again to re-examine the vehicle!
I logged the process again, and it confirmed that changing the valve was unnecessary. Anyway, a different problem. I then inspected the VTG (Variable Turbine Geometry) and noticed that it was completely stuck. After 2-3 hours of working it loose, the VTG started functioning perfectly again (see log).

www.qpm.ch/Ladedruck-Log26.2.2006.xls

I thought the problem was fixed and was very happy until today. Now, I'm experiencing excessive overpressure again when I run a log (a maximum of 2570 mbar).

I then read the error memory again. The following results were obtained:

"One error found:"

17563 - Intake manifold pressure sensor (G71): Short circuit to positive.

P1155 - 35-00 - -

What I honestly can't understand is how a faulty intake manifold pressure sensor could be responsible for creating excessive boost pressure.

I have to be honest and say that this error has appeared in the memory 1-2 times before, but I ignored it.

I hope you can help me.
Best regards,

powsi wrote:

Now, what I honestly can't understand is how a faulty intake manifold pressure sensor can be responsible for creating excessive boost pressure?

I can't find a reason for that. I'm more inclined to think that it's measuring a pressure that isn't actually there.

EDIT: The post itself has been deleted.

I don't support any user who runs a tuning company but can't even fix such obvious errors.

(see the website where he posts his logs www.qpm.ch).

Hi.

You are absolutely right. I am allowed to upload my log files there, because the company does not belong to me.
I'm asking this question as a regular user who is experiencing a problem.
I don't think that's very nice of you.
Okay, then let it be.

@powsi
If you can already upload your logs there, it should be easy for them to identify your error.
to find...

@Guste
There it is again... Hardware developers are just too dumb to get rich.
Honesty doesn't pay off; the world wants to be screwed over .

Best regards,
Rudi

p.s. Last night was -13°C - you're not missing anything here .