The AC stopped working in my 2012 Subaru Impreza I got into an accident in December and was hit on the rear passenger side Could the collision have caused the issue?

Yes, the collision could have caused the AC issue in your Subaru Impreza. Damage to the rear passenger side might have affected components linked to the AC system, such as the refrigerant lines or electrical connections. Additionally, if the impact caused any frame misalignment, it could have indirectly affected the AC's performance. It's advisable to have a professional inspect the vehicle to determine the exact cause.