Do I need to have a code P0140 warning repaired immediatly? on 2000 Oldsmobile Bravada

I am going on a short trip (about 750 miles) and wouls like to wait 'til I return to have this repaired.

Asked by for the 2000 Oldsmobile Bravada
1 answer
i do believe its an o2 sensor issue you might want to repair 1st it will help your gas mileage i do believe.thats b1 senor 2 no activity,but you can wait if you like