2000 Honda Civic Check engine light

Hello,
Recently, I had to replace my factory gas cap with a locking cap because of a rash of gasoline thefts by way of siphoning. I noticed that the new cap does not close tightly at all. My factory cap requires 3 clicks and it's tight as a drum. I own a 2000 Civic EX sedan with the 1.6 liter V-tech and have never had an issue with this car and I've maintained this car always. I read on other websites that the culprit for the check engine light to glow can be, among the many reasons, caused by a loose gas cap. If I were to switch gas caps and just leave the locking cap on the car when it's parked overnight and replace it with the factory cap before I drive the car be a solution to this issue?