The codes are related to an underboost condition and a mismatch between commanded and actual VGT position. Since the VGT is controlled by vacuum, it could be related to the vacuum pump or lines, or it could be a fault in one of the sensors that monitor the actual boost and VGT position. A previous incident including these two codes (plus a third code) was the result of a rodent-induced vacuum leak. (
http://www.cruzetalk.com/forum/201-...discussion/104106-1st-check-engine-light.html) There is a vacuum pump on the front, driver-side corner of the engine and two thin lines that go to the turbo, along with (I think) a third vacuum line going to the brake booster. Inspecting those lines for leaks might be a good step to take. The MAP reading inside the intake should be independent of the vacuum produced by this pump, since the pump exists to replace the consistent presence of a natural vacuum source in the Diesel engine.
I'm not sure what the relation to the re-gen initiation would be, unless the negative pressure inside of the intake during re-gen initiation would be, though, unless something about that process is impacting the turbo in some way.