Check Engine lite

[dcnhan]

What causes the check engine lite to come on and can it be reset without a fancy device?

[boingo82]

Sorry, buddy, but that light's not just for decoration. It usually indicates a part failure in your emissions system. I have scanned out of my FSM several pages on self-diagnosing the system. Once you have diagnosed and fixed the problem, you can reset the light by disconnecting the battery overnight.
Look here for diagnostics

[whitefox6969]

thanks alot man u have helped alot