Had these codes pop up within the first 2 weeks from winter storage. I pulled/replaced the bypass valve and it made no difference. So today I pulled the DP to put my vacuum tester on it and it appears to be closing fully by 10 inhg and it will hold 15 for a few minutes and not drop off. I'm guessing it's either the boost solenoid or a hole in a vacuum line leading to it? I just tested the vacuum pump and it's pulled around 27in of vacuum. I will say it wasn't happy running with everything unhooked but I wanted to check it.

here is a video of the wastegate working on my vacuum pump.

https://youtu.be/T91Ee8IkDEo?si=y_n02j9Eamq8zP2e

 

Might the charging pressure sensor or circuit be faulty?