o2 sensor check engine light

[BlakieMoeStang]

Hey mustang world having trouble with my O2 sensor bank1 sensor2 when I first bought the stang after 2 weeks the check engine light pop on. I got the code read and it said bank1 sensor2 so I change the sensor and cleared the code about 2 weeks later the check engine light pop back on I took the O2 sensor back to auto zone and got a different one the check engine light pop back on again what should I do

 

[wmburns]

It would help the ppl trying to help you if the full DTC codes were posted. There are 1000's and they each have a story to tell.

However, it's obvious that the rear O2 sensor itself is NOT the cause of the problem.

Tell us about the car. Any other DTC codes?

How many miles? Mods? Does the motor use coolant? Use oil? How's the gas mileage?

What does the exhaust look like? Blue smoke? White smoke? Gray smoke?

How's the power?

IMO you should be prepared for the possibility that the cats are shot.