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What is the cause of engine light turning on in the Audi A5?

I recently noticed that the engine light in my Audi A5 turned on. What could be causing this and what steps should I take to fix it?

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The most common cause of the engine light turning on in an Audi A5 is a faulty oxygen sensor. It is recommended to get this checked and replaced by a certified mechanic. Also, make sure to use high-quality fuel to avoid potential issues.

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