How long does it take to clear all the OBD 2 monitors?

[Oldmactech]

Need my 3.0 to pass emissions in GA and I get a random o2 sensor code that keeps it from passing. I reset the code and reset the (starts with the letter “a” can’t recall what it was. ) I’ve now driven 250+ miles, and at hiway speeds and the catalyst monitor hasn’t completed the cycle.

How much more time do I need to give it?


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