I realize that your codes don't totally match the codes I've seen posted elsewhere for EGR issues, but (since the many of the codes have to do with exhaust gas recirculation [EGR], and your diesel has moderately high mileage) I'm suspicious of carbon build up on your EGR valve and/or throttle valve and/or swirl flaps.
I posted two links that refer to this issue.
This link discusses how to get the intake manifold off, then
this link discusses cleaning the intake manifold and swirl flaps, and checking the intake valves. To do the full job(s) discussed above would take a fair bit of time, but (if you have the right tools) checking/cleaning the EGR valve and throttle valve can easily be done in 1-2 hours (I'm pretty sure I could do it in 30-45 minutes, but I've been down that road several times and quite familiar with it all).
The EGR valve (part 1) and throttle valve (part 4) can be seen in this link from Realoem:
The electrical connections to the throttle valve and EGR aren't too bad - though the connector on top of the EGR valve can be a little difficult to disconnect - I discussed using a micro-screwdriver to get it undone in my
thermostat link here, and others (posts 60 and 61 of
this link) have also found it difficult. If you have the right length of metric hex wrenches, it's not too hard to get the EGR and throttle valves off. Also, using a ball end hex wrench set (
like these from Amazon) will allow you to still loosen/tighten the bolts even when it is hard to get the hex wrench perfectly aligned.
Not sure if you're just interested in information, or if you're wanting to try to tackle this yourself. If you want to try to work on it yourself, I can give some other details on the job. Again, not too bad if you have the right length and type of hex wrenches.
I also realize that since I had a fair bit of CBU I want to blame CBU on nearly every other problem I hear about on the diesels. As they say, when all you have is a hammer, everything looks like a nail! So even though I'm suspicious, maybe that's not your issue.
Good luck. Let me know if you want extra details.