I have two engine dtc codes P123B & P2263, both related to the turbo.

What is your question?

I had the regen system removed from my truck & had a flash drive from gearbox z to reprogram. Shortly after removing the regen i had 2 DTC codes come up. A P123B and a P2263, no one seems to know what the problem is or how to fix it. I had the regen removed cause I was constantly in regen & LIVING AT 10,000 ft. all it did was dump diesel into my crank case.