HOW TO RESET CHECK ENGINE LIGHT and Why Check engine Light is on.

HOW TO RESET CHECK ENGINE LIGHT and Why "Check engine Light" is on. works on most cars Ford Honda Toyota BMW GM Chevy Dodge trucks suv minivans or cargo vans ect..  this is common reason why check engine light could be on in the dashboard due to loose gas cap but just in case use a check engine diag. tool to be sure real reason why. get tool here link http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=Autel%20MaxiScan%20MS300%20CAN%20Diagnostic%20Scan%20Tool%20