o2 sensor question

[dtldiaspora]

alright so i replaced my upstream o2 sensor, the one above the manifold, and i disconnected the battery and it didnt clear the code, so i was wondering if its gonna update itself or if i should just get my friends dad to clear it whenever i go to her parents house?

[Redog]

Probably having it cleared is the best bet

[dtldiaspora]

alright figured that but just wanted to make sure