Had a check engine light come on. Ran the codes and it said it was a small EVAP leak in the system. I took it to a dealership where they proceeded to charge a ton of money for a new fuel tank. I got home and the light came back on. The new tank was not the problem. I took it back and they put a new charcoal canister on and it fixed the problem.

FYI. In the beginning the check engine light would come on and then go off for a few days and then come back on. I bought a charcoal canister myself and put it on and then the check engine light stayed on. It turned out that I had bought a defective charcoal canister but after a new one was put on, the problem was fixed.