P0441 code won't go away

I just bought a 2013 Prius C, I pointed out the CEL to the dealer, they said they'd "fix it" before I picked up the car along with some other things. They fixed the other things, and just reset the OBDII code because it came back on later.

I pulled the code P0441 - Evaporative Emission Control System Incorrect Purge Flow.

I know that code is usually the gas cap but I've checked it multiple times, always going to the click, and it still stays on. I just filled my tank today and I've been getting good (above the Fuelly average of 47.5) mpg when I drive. I heard somewhere it cycles when the tank is between 75%-25%? I don't really know but I need to get emissions done to register it and I can't pass with a code and can't reset the code because the emissions sensors won't be good to go if I try to get it done.

Any thoughts on what else it could be? The purge valve?

 

If anyone comes here looking for the problem, it was a bad solenoid.