The emission control computer sensed that the cap wasn't sealing properly,
and that gas vapors might escape from the filler neck. The light won't turn
off until the computer is certain the leak's gone. It needs to run its
normal diagnostics a few times until it's convinced.

Next time you fill up, forget the "three click" thing they tell you. Make
sure the cap is tightened AT LEAST six clicks. More is even better.

This is all mandated by US Federal EPA.

It took my Civic more like 5-7 days for the light to clear.

tegger is absolutly right  forget the 3 click thing and turn 6 clicks next time but say tegger being he has an obd2  second generation onboard diagnostics computer.   im thinking he might wanna try disconnecting battery cables for 5 minutes and put them back just to see if that helps to turn off gas  light.  now that the gas cap is tight ?  i know  on the older   obd1  computers it would of reset the computer. and  check engine light would go out and stay out  if the problem was repaired

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johnin

Hey thanks"   TeGGer  for the info by the way i have been on your Acura/Honda  site.   and i must say its filled with some real good info.  highly recommend it to anyone owning a Acura/Honda

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johnin