reset check engine

i have a 97 sephia, check engine came on. i took it to autozone. the error code came up with O2 sensor. so i bought one put it on and the engine light is still on. is there a way to reset it..like a button or something?

I am not a pro. you are on your own risk.

disconnet negative side of baterry for 5 min. I am not a pro. you are on your own risk.

Go back to AutoZone. The same OBD Scanner they used to check the "Error Code" will also reset the check engine light.