2014 Kia Optima Ex
Hi all. Recently popped a CEL with P0455 code. Bought new gas cap from Kia dealer and light stayed on. Brought car in to dealership last week. They did a smoke test and said I had a leak from the charcoal canister. Replaced at $340. New canister, problem fixed according to them. Well guess what check engine light popped on again tonight. (5 days later) Will scan tomorrow but I am guessing it will be the same code. I know these EVAP codes are tricky but did I spend $340 for nothing? They assured me the charcoal canister was the problem. I do not want them to just start throwing more parts at it when they already said they repaired it. Frustrated.