CRV 2003 - Reset Engine Light
 

I got these codes from the diagnostic- P 1166 and P 1456. everything I
saw meant new gas cap so I have replaced it. But I need to know how to
reset the Check Engine LIght. I did the Odometer and ignition, but
that seems only to reset the Maintenence light. Any Help? Could it be
more than the gas cap? Thanks!