What could trigger the check engine light in my 2011 Porsche Cayenne to illuminate?

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The Check Engine light in a 2011 Porsche Cayenne may come on due to various causes. One common reason is if the fuel cap is loose or damaged, especially if you see the light right after refueling. A low or dead battery could also be the culprit, usually showing symptoms like difficulty starting the car or problems using features such as the headlights before the warning light appears. Malfunctioning parts like the catalytic converter or mass airflow sensor can also trigger the Check Engine light. Vacuum leaks are another frequent issue, possibly indicated by a high idle RPM or surging.

What could trigger the check engine light in my 2011 Porsche Cayenne to illuminate?

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