Wondering if someone might be able to steer me in the right direction. I know there threads that touch on different poss scenarios but im hoping someone with more knowledge can give me advice as to what to do, where to go with this?
Car runs good, only 11500. Still has power and gets 20-25 Mpg. Needed smog, got smogged and passed no problem, but I have a check ingine light on. So failed. Paid the shop to reset, told me to drive around for a couple days and come back. Light stayed off but still didnt pass. Reset again, stayed off almost a week until i pulled into shop. 3rd time paid to check to see what error it would pull...

P0013-Cam Pos B actuator bank 1

Is code he gave me... So reading here through forums it could be cam sensor, solenoid or clogged pcv, faulty wiring, i have even heard an old battery? From someone who would NOT be able to replace these things myself, "course battery and can check wiring but not handy mechanically speaking" what is the next best step i can take without throwing away more $ than i already have, god forbid having to take to Volvo?

Amost $500 in now and love it, but SO frustrated that a light can keep me from driving, selling my car!
Please any - all advice is HIGHLY APPRECIATED!