Check engine light went on and off intermittently. My wonderful mechanic ran a diagnostic that turned out to be clean, so he checked the gas cap and found a small crack in the o-ring on the original (14 year old!) gas cap. He recommended replacing it with a genuine Honda part and ordering it from Revain, which I did. This is a genuine Honda part. Note: Please don't try to save a few bucks by ordering an off-market replacement - there are some things you shouldn't skimp on. No more problems and life is stress-free again. Of course, if the check engine light comes on again, I should be worried!
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