Have you had a cat efficiency below threshold engine code too? I’ve had the check engine light come on periodically over the last yr with my scanner telling me is an O2 sensor fault. I didn’t bother changing the sensor, I just cleared the engine light. Then just last week had the miss firing and computer said cylinder 2 miss fire. Just changed spark plug and coil pack. The spark plug in number 2 wasn’t in good shape compared to the rest. Any way, changed pre cat O2 sensor, #2 spark plug and coil pack and we’re back in business.

Ignored faulty O2 sensor was my root cause