[dayvurd]

hi,

i unhooked both 02 sensors from the car and i cant tell what clip is for pre cat or behind the cat on the harness in the engine bay. theres one grey and one black....cant match them upto the o2 sensor plugs as they're new/different colours. ive tried to just plug one in and see what the voltage reads on my obd2 scanner, but both show a voltage reading when only one is plugged in so i cant tell....any help is appreciated

thanks

[CraigB]

Black plug is the pre cat (bank 1) sensor on my GD.

[dayvurd]

cheers ill take a look and see if its the same for mine