Cm2350 Logging 2554 and 2764 codes

[Kubasj05]

From what I have noticed turbocharger and actuator are original, truck has 505k on. Looks like new egr cooler, new exhaust gas pressure sensor but egr related sensors look original.
I'll take a look at some stuff tomorrow and give an update.
Your input is much appreciated, also I felt like donating as it's all worth it at the end