How do I troubleshoot a persistent check engine light on my Audi A4?

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Samantha 3 months ago

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How do I troubleshoot a persistent check engine light on my Audi A4?

I have a 2015 Audi A4 and the check engine light has been on for the past few days. I've checked the gas cap and it seems tight. What should I do next?

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**Alex** · Answer 1 · 2025-01-02T16:40:05+00:00

First, try resetting the check engine light by disconnecting the battery for a few minutes. If it comes back on, it could be a more serious issue.

How do I troubleshoot a persistent check engine light on my Audi A4?

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