I've had P0456 for a month now. I keep resetting it and it keeps coming back. So, I thought I'd start easy and cheap and replace the gas cap. No dice. Code's back.
What would you check next? Sounds like P0456 is a "small" evap leak and therefore unlikely to be the EVAP canister... would y'all agree? Should I keep looking at other options or just tackle the canister anyway?
What would you check next? Sounds like P0456 is a "small" evap leak and therefore unlikely to be the EVAP canister... would y'all agree? Should I keep looking at other options or just tackle the canister anyway?