Does the computer reset itself after driving a few miles?

Yes, it's called completing a drive cycle. The computer will monitor different functions and they has to pass to complete a drive cycle. Most of the times it takes more than just a few miles and has to be driven in a certain way. Make sure the gas tank is between 1/4 and 3/4, start with a cold engine and leave it idle for a while, than go and drive it. Do few decelerations from 50 mph down to 30 mph without stepping on the brake. Zee