Hello,
More than likely the bulb has gone out.
In order to replace the bulb you will have to remove the gauge cluster.
It is a simple process of removing few screws to get the cluster out.
Then you will have access to the back of the gauge panel.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing
I have attached diagrams for your reference.
Please let me know of any questions.
Thank you.
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Thursday, September 9th, 2021 AT 9:14 PM