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