[spxxx]

I'm having trouble getting the O2 sensor monitor ready for smog. All other monitors are ready... My car is fully stock and I did the drive cycle several times and drove ~300 miles with no luck

I then replaced all 4 sensors and have done the drive cycles 3 more times over the course of 120 miles this week. I ever tried adding 1in spark plugs spacers to the sensors and it's still not ready.

I'm considering clearing codes or resetting adaptations since I swapped in the new O2 sensors but I'm scared I'll end up just being in the same situation but the other monitors might not set.

Any suggestions?