I have a 2000 Toyota Corolla. I took it to AutoZone because my check engine light was on, and they plugged in some electronic thing that read the problems. What computer / electronic system is keeping track of those problems? I'd like to understand it better.
Plus that check engine light has been reset like 50 times, and it just stays on for no reason. It's been on since I was in high school (like 8 years). If I could learn enough about the computer, maybe I can write some code to keep it from coming on.