Vauxhall insignia

Vauxhall Insignia 2.0 TDCi 160
Starting and running issues. It idles perfectly and starts consistently when the vacuum line is disconnected from the boost control solenoid.
Recorded codes
P0402 an old code
P0404 an old code
P003A Turbocharger boost control Position Not Learned (new today)
P03A7 Cylinder 2 Pressure variation High (new today)
P2282 Mass airflow sensor ( new today)