I have a 2002 coupe with 9,300 miles. The check engine light came on. I opened and closed the gas cap and ran if for a while, but the light stays on. I called Maserati and the rep asked me if it the light was yellow because yellow was not that serious and that red was very serious. I didn't realize that it changed colors. I thought it the check engine light was either on or off. I didn't realize there were two colors - is this correct and what about driving it until I get to the dealer for an annual in about a week?