How long did you wait to reset it. Normal time to kill a battery is overnight. I think there is a way to leave the negative cable on and push the brake but dont qoute me. If you didnt the computer will just store that code. Another option goto autozone or advanced and have them hook it up to the computer dianostic which is free i would let you use mine but i need to update the stuff because it doesnt read. It will give you a printout and also they can reset them most of the time. Or jiffy lube will cut the code from your computer for a price.