Check engine light on and having problems filling tank sometimes.

Hello, Yes and yes. The diagnosis makes sense, but I've never heard it called the pressure control solenoid either. Being a 2010, there may be a vent valve, purge valve, or purge valve solenoid, or any combination of the three, along with other components. The problem is, every manufacturer names these components with slight variation, but all dealerships have schematics of the EVAP system. Dealership parts departments for consumers typically sell maintenance items and accessories. If you run into this issue again, ask to speak with the parts manager, or a service writer, as they have extensive experience quoting parts costs. For a second opinion you can trust, see the list of shops below: http://repairpal.com/subaru-within-10-miles-of-moss-landing-california-95039