Subaru Outback Oxygen Sensor Replace/Remove

In A Day The Car Suddenly Started Running Rough, Rpm Bouncing, At Idle 2 Times As It Stopped It Quit Running. The Code Reader Said P2096....

My Check Engine Light Is On And We Did An Obd Scan And It Indicated Code P0031 Which It Said Is A Heater Control Circuit Low. Is This A...

In My Subaru Outback, I See Universal Sensors Online A Lot Cheaper, Is Ok To Use The Cheaper Ones? My Car Has Been Omitting An Bad Odor...