I replaced all 4 O2 sensors and still get this error. Someone said maybe 1 of the new sensors was bad. So it says bank 1 #1...is that the front drivers side? which one is it?

does anyone have any other ideas?

also, i changed all my spark plugs to plat split Bosch.

thank you.

 

Bad plugs and wires will throw a bad O2 code. You said you replaced the plugs but how about the wires?