2001 2.7 v6 Santa fe o2 sensor code

When I run the air the engine light comes on after a bit and I get an o2 sensor code. Once I turn the air off within hours to a day or two the engine light goes off. Is this a bad sensor or is there an A/C issue? Air is good and cold as it has been.

When I run the air the engine light comes on after a bit and I get an o2 sensor code. Once I turn the air off within hours to a day or two the engine light goes off. Is this a bad sensor or is there an A/C issue? Air is good and cold as it has been.
That's odd because that 2 systems aren't related. What code are you getting?