2003 A4 3.0 - Flashing Check Engine light, but now it does not light

I'd have it looked at, if only for piece-of-mind. It could be any number of things (or nothing), but it probably stored a code in your ECU that will help shed some light. Good luck...
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You might want to see if your car falls under the coil pack recall (all 2002s and early 2003s did) and try to get them replaced.
Good luck!
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