You're about to stake out a suspect's business when the "Check Engine" light pops on. What should you do?
The "Check Engine" light can come on for different reasons, but the easiest to check (and eliminate) is the gas cap. if it's loose or damaged, the car's computer will throw an error code. Make sure it's tight and see if the light goes off. Otherwise, make an appointment with the mechanic to get it looked at.