Obd II monitor incomplete oxygen sensor

Good morning, I have a Nissan Sentra 2 liters 2011, and now that the verification must pass using the diagnosis by OBD, it reports that the oxygen sensor monitor is incomplete. If I use the mode of the scanner for diagnosis last trip indicates disabled monitor.
However, the computer does not mark any error code and the Light Mil has not turned on and I already checked that the indicator focus is not damaged.
Thanks for your support

Hello, you can clean the oxygen sensor and the connector too. Another option would be to reset the computer disconnecting battery

That monitor is from the sensor after the catalyst .... that is completing when the 700 degrees that nese a catalyst for its normal work are fulfilled .... it makes a route test ... take it to 80km pH for a few minutes and then solve the accelerator without

touch codes that do not turn on a thousand