williamwells59

2003 Nissan 350Z Touring
My downstream bank 1 (sensor 2) O2 Sensor connector is missing and the wires are not hooked up. Throwing a p0037. I would like to hook it back up and see if the O2 is ok. I believe it is the stock sensor currently in there. 80k miles.

From the O2 sensor I have 4 wires:
Black = Signal
Grey = Ground
White = Heater
White = Heater

From the harness I have what colors I believe are:
Pink/Black Stripe
Red/Black Stripe
Yellow/Black Stripe
Orange

I would like to know which of these for is the SIGNAL and GROUND and the other 2 should be the HEATER.

Thanks guys this is driving me crazy.

williamwells59

Could someone look under the 350z for me? If it was possible to crawl under one of these and find out I would on the next one I see parked. haha.

bealljk

iTrader: (13)

Searched…this is what I came up with...

O2 sensor help…

I cut my o2 sensor so that I could splice in a heat sheathing to prevent melting from when the headers/turbine heat up. For some reason I thought they were 4 different colors so I didnt bother marking them - but (as above) there is a black, a grey and two whites…

my question is does it matter which white is connected to the other which white? can white #1 be connected to white #2 and/or vice-versa? does the 'heating' function like a light bulb where there is no polarity or are the whites specific to the grey, black or white wires?

Thanks in advance