What is the most common cause of a check engine light in an Audi A3?

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Tom 9 months ago

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What is the most common cause of a check engine light in an Audi A3?

I recently bought an Audi A3 and the check engine light keeps coming on. What could be causing this and what should I do?

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**Emily** · Answer 1 · 2025-03-06T20:05:04+00:00

The most common cause of a check engine light in an Audi A3 is a faulty oxygen sensor. It's important to have this issue addressed as soon as possible, as it can lead to decreased fuel efficiency and potential engine damage.

What is the most common cause of a check engine light in an Audi A3?

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