I have had the CES light tested over and over and each time comes up with no problem or different problems. even if none are fixed. So what is one to do when nobody can find the problem to really what is up with the car???????

Fot the past 5000 miles my check engine soon light has remained on, even after the car has been serviced. I have repeatedly had it checked out and been told everything is fine. The light remains off for a brief time, then comes on again to stay. The real problem of course is that I won't know when I really do have a problem.