@SU-AM Removing the pressure sensor will drain the AC. You will need to evacuate/empty to whole AC via a vacuum pump and then refill it with R134a without letting any air going in the system. I can't tell you the exact amount of refrigerant. Stay away from those DIY refill sets. You will make more damage than you can even think of by using this crap. Fill in to much and you damage several parts of the AC. Fill in too less and the AC won't work and you will also create damages.
Visit a garage that has the special tools and experience that are required for this and let them do it the proper way.

You can get documents with everything regarding electrics like circuit diagrams, module locations, cable routings, ground connections etc. here: https://volvodiag.com/ewd-online-eng/
In this forum thread https://forum.d5t5.com/topic/249/vida-2014d-2015a-windows-11/24 , you can get a Win 10/11 compatible version of VIDA to look up the descriptions and fault tracings for all those error codes.