Can one sensor cause the other sensor to read wrong? Reason i ask is cause this is first time the P1153 has come up and i have ran the codes at least 4 different times.

Lastly i see what you are saying , so when i replaced last year with o2 sensor from autozone, do u know how it could have work for year before coming back? Is there something on the car that would tell me if it Cali spec? I really appreciate your help on this.