02 sensor

[backinblackgtp]

my SES light is on and is reading the same problem for the 3rd time now, bad o2 sensor "bank 1 sensor 2" which one is bank 1 sensor 2? any idea why this keeps happening, and i never put anything less than 91 octane.

[TheOtherNick]

Could be a bad cat. It is the rear sensor.

[Bio248]

there is technically only one 'bank' the car reads since there is only one o2 sensor for all six cylinders. therefore, you only need to worry about sensor 1 or sensor 2.

[backinblackgtp]

thanks to you both, ended up it was somehow loose. i tightened it and it the SES light went off