I am trying to help out my mother. She has a 2013 Chevy Equinox and it kept stalling. I hooked up scanner and the diagnostic code came back as P011, we changed the camshaft sensor and solenoids. It seems to have stopped stalling but after about 5 miles the engine light came back on. I hooked the scanner back up and now it reads out a code P2090. I have tried googling what might be wrong and what would be the best way to proceed from here to find out what's wrong. I have very basic auto repair knowledge and I'm afraid this may be "above my pay grade". My dad was an excellent mechanic but unfortunately he passed away last year and my mom is struggling financially so taking it to a garage just isn't in the budget so we are trying to see if it is something we might be able to repair. Any advice would be appreciated.