[9mmkungfu]

Hey guys. I'm seeing these two codes and I've been doing some reading. It looks like a boost leak/vacuum line/actuator may be at fault for the P0299, and I have no clue about the P2457. I'm assuming a clogged EGR or something of the sort.
I found these codes in the "logged faults" area of the ECU.

Also, while driving, the car goes into limp mode with the engine malfunction light. When scanning for pending faults, the P0324, C1702, B1904, and P0200 codes appear. They disappeared when I restarted the car after parking.

Are there any other suggestions for what these may be?

Current known issue with the car at 110k: red hose oil leak
Previously addressed issues with the car, 50k ago: injector(s) replaced four times (unsure of which, or if the same), intake manifold replaced for CBU