My Audi A4 seems to be having some trouble with its engine. The check engine light keeps coming on and the car is running rough. How can I diagnose and fix this issue?
ReplyFirst, it would be helpful to check the error codes with an OBD scanner. This will give you a starting point for troubleshooting.
Another common issue with Audi A4 engines is a faulty mass air flow sensor. This can cause rough running and a check engine light.
Make sure to also check for any vacuum leaks in the intake system. These can cause a variety of engine issues.
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