The Check Engine Light went on a few times and stayed on. Took the car to dealer and each time did not indicate any problems. The car drives normally with no problems. What else could be causing this aside from what is already been published in the QA section?
Check Engine Light on 2005 Porsche 911
The car should be checked for History Codes. You may have an intermittent problem. As long as the codes were not cleared, there will be a code in the history that can start you on the diagnostic path.