Hi guys.

My very first post, so please forgive me if this is the wrong forum for tech-chat about my car, but I'm nearing desperate.

The local Merc-garage is unable to pinpoint the problem, and I now hope to get some usable advices here.

I'll be grateful for all advices and hints, so please feed me, and don't worry if you're suggesting something I've already tried.

The problem; error code P2263 when giving throttle uphill, or drastic acceleration on flat road.

When under normal operations, TPS shows from 48% up to 57%, unless when throttle is idle during down slope, the TPS shows 89,7%
At idle it shows 48-52%
Curve is irradic, when gear is shifting, engine stutter for a few seconds, TPS reads from 20-30%, and when releasing and repressing throttle, it goes back to 50'ish %.

When regeneration of DPF, TPS shows "normal" values, from 14% idling, up to 89% when applying throttle.
Normal increasing and decreasing curve.

Question; is there a procedure for re-calibrating TPS?
Or does anyone suspect any other faulting part/electronic/system?

Question; will a delete of software and re-install make all systems re-calibrate?

As mentioned, ALL ADVICE OR HINTS appreciated. ðŸ˜*