Engine Map... Bank 1 Side 1;;;;;;;;oxygen Sensor

[MikeCostES300]

diagnosed a bad Bank 1 Side 1 oxygen sensor. Where is this one located/ its upstream, before the cat convertor.

[George_Jetson]

Bank 1 is the rear bank, next to the firewall. Bank two, front bank, next to rad. sensor one is before the cat

[MikeCostES300]

Bank 1 is the rear bank, next to the firewall. Bank two, front bank, next to rad. sensor one is before the cat

Thanks George. I'm hoping my '02 engine is configured the same way.