HONDA OXYGEN SENSOR

I Got A Check Engine Light Code P0135 Changed Primary O2 Sensor Cleared Codes And Light Came On New Code P0131 That Says O2 Sensor Bank 1...

The Car Listed Above Is An Ex-model. My Car Only Have One Oxygen Sensor Plug On It At The Top Where Is The Other, Because I Purchased A New...

Car Runs Without O2 Sensor Connected. With 02 Sensor Connect Gets Rich Condition And Will Not Run Well. 2 New 02 Sensors Have Been Used....

Hi, Does This Civic Model Have O2 Sensor? If Yes, How Many, And Where Are They Located? Thank You In Advance.