Cel question

[sohcEX]

Does a b18c1 motor have a upstream and downstream o2 sensor? if im getting a fuel malfunction bank 1 cel does that mean that is the o2 sensor upstream is bad and my computer is relying on bank 2?

[Barefoot]

Does a b18c1 motor have a upstream and downstream o2 sensor? if im getting a fuel malfunction bank 1 cel does that mean that is the o2 sensor upstream is bad and my computer is relying on bank 2?yes and bank 1 sensor 1 is the 1 before the cat.

[sohcEX]

Thanks bro