Why does the Check Engine Light on my 99 Plymouth Neon keep coming on?

Let me guess, you got the code read for free and now you want to fix it yourself. As stated previously, I would also suggest finding a reputable repair facility that employs ase master certified technicians and pay to figure out what is wrong with the MAF circuit. They will need to determine why the circiut has high input. Most places like this charge one hours labor for their time diagnosing the problem, so figure around 100.00, money well spent in my opinion.