2003 Kia Spectra Check Engine light

I've got a 2003 Kia Spectra and my check engine light came on. I suspect the gas filler cap wasn't clicked the 3 times, how do I turn this off without going to the dealer? The car runs great otherwise.

take the battery -terminal off for a minute or so turn head lights on to drain all power left in vehicle and reconnect battery if light still on get code read from like autozone and let us know what the code is

take the battery -terminal off for a minute or so turn head lights on to drain all power left in vehicle and reconnect battery if light still on get code read from like autozone and let us know what the code is


Thanks so much for your advice, it worked! We disconnected the battery and upon reconnecting it the light was off.