So I have a 0455 code on my '14 Sorento. Tightened the gas cap, and after 30 ish miles the light was still on. Took off and put gas cap back on again. Disconnected battery for a minute or two, then went for a short drive and light came back on after 5-6 miles. Bought a new gas cap, light is still on. So I'm thinking it's not the gas cap. What are your suggestions of where to look first? I'm not looking to just throw parts at it to fix it, just asking of what to look for. I've got some time since my tags/emissions are not due until August. Is this a common issue on Sorento's? And if so, what usually fixes it? Thanks in advance for the replies.