my advice would be to wait...could have been water, bad gas,...the dealer wont be able to tell WHY it misfired but the car doesnt seem to think anything is wrong. If it runs OK and the check engine light isnt on, i doubt they will do much, they will just blame it on "bad gas"...if the light comes on again and its the same code, THEN i would worry. There is also "freeze frame" data you can acess throught the code reader that will tell you some information about the other sensors when the misfire happened....SOMETIMES that can be useful so if you clear the code, record the freeze frame data