The engine lite on my 06 GTP coupe came on after about two weeks ( 1500 miles ) while driving to work on the turnpike. It turned out to be a bad oxygen sensor, which the dealer replaced, although it had to be ordered. They reset the light and told me to just drive it until the part came in. Other than additional smog into the air, it ran fine until changed. Haven't had any other problems ( 5800 miles now ).