How to Fix OBD2 error code : P0135 Ho2s bank 1

Hello every one
Its my first post on this forum
-I have Chevy Aveo 2005 1.4 LT Sedan
automatic transmassion
-after the service that I make the car began to drink a lot of gasoline
I check the car on the ECU OBD 2 computer and get the code : P0135 heat S 1
What to replace and need help
thanks every one

There is any one want to help plz ��

Most likely the primary o2 sensor?

Attachment 10438

got a cheap bosch replacement. It worked and my p code went away. Primary sensor like the silly rabbit said