Help O2 Sensor wire harness?
Thread Starter
Registered User
Joined: Jul 2009
Posts: 11
Likes: 0
O2 Sensor wire harness?
So I recently bought a used 08 g37s and found out that the previous owner had run over a dead animal thereby damaging the wire harness for the right cat O2 sensor.
Looking under the car, it was only the female connector that was damaged, the wires are still intact. Seems like the tech broke the black plastic housing to extract the wires (no clue why they would do that).
I think the easiest way to solve this is to splice the wires to either a spare female connector or direct to the O2 sensor.
Does anyone happen to have a old female connector they could spare? It would also be great if someone could verify the wiring color for me. On the female side the wires are Red, Pink, White & Black. I need to know what colors hook up to what colors on the O2 sensor side (White,White,Gray & Black).
Looking under the car, it was only the female connector that was damaged, the wires are still intact. Seems like the tech broke the black plastic housing to extract the wires (no clue why they would do that).
I think the easiest way to solve this is to splice the wires to either a spare female connector or direct to the O2 sensor.
Does anyone happen to have a old female connector they could spare? It would also be great if someone could verify the wiring color for me. On the female side the wires are Red, Pink, White & Black. I need to know what colors hook up to what colors on the O2 sensor side (White,White,Gray & Black).
Thread Starter
Registered User
Joined: Jul 2009
Posts: 11
Likes: 0
That's what I had in mind, to simply connect the wires. Having the connector there just makes it easier to swap out the O2 sensor in the future.
Problem I have is the color code for the wires... the former owner had left the wires dangling so despite staring at the wiring schematic for the G37 for the last 48hrs, I can't figure out which leads connect to which leads on the O2 sensor.
On a side note, the wiring schematic for the nissan gt-r makes perfect sense lol
Problem I have is the color code for the wires... the former owner had left the wires dangling so despite staring at the wiring schematic for the G37 for the last 48hrs, I can't figure out which leads connect to which leads on the O2 sensor.
On a side note, the wiring schematic for the nissan gt-r makes perfect sense lol
That's what I had in mind, to simply connect the wires. Having the connector there just makes it easier to swap out the O2 sensor in the future.
Problem I have is the color code for the wires... the former owner had left the wires dangling so despite staring at the wiring schematic for the G37 for the last 48hrs, I can't figure out which leads connect to which leads on the O2 sensor.
On a side note, the wiring schematic for the nissan gt-r makes perfect sense lol
Problem I have is the color code for the wires... the former owner had left the wires dangling so despite staring at the wiring schematic for the G37 for the last 48hrs, I can't figure out which leads connect to which leads on the O2 sensor.
On a side note, the wiring schematic for the nissan gt-r makes perfect sense lol
Thread Starter
Registered User
Joined: Jul 2009
Posts: 11
Likes: 0
Yeah, it should be the same color but I haven't had any luck finding a wrecked 08 g37 around where I live (Olympia, WA).
That's why I thought with the amount of people doing work on their cars here that someone might take a picture of the connection while it's on the jacks so that I can connect it for the short term while continuing my search for a junked connector.
That's why I thought with the amount of people doing work on their cars here that someone might take a picture of the connection while it's on the jacks so that I can connect it for the short term while continuing my search for a junked connector.
Trending Topics
Yeah, it should be the same color but I haven't had any luck finding a wrecked 08 g37 around where I live (Olympia, WA).
That's why I thought with the amount of people doing work on their cars here that someone might take a picture of the connection while it's on the jacks so that I can connect it for the short term while continuing my search for a junked connector.
That's why I thought with the amount of people doing work on their cars here that someone might take a picture of the connection while it's on the jacks so that I can connect it for the short term while continuing my search for a junked connector.
My exhaust probably looks a little different than yours, but I'm sure you get the idea. You'll have to research the factory service manual. The info you are looking for should be in there.
Registered User
Joined: Jul 2010
Posts: 53
Likes: 0
So I recently bought a used 08 g37s and found out that the previous owner had run over a dead animal thereby damaging the wire harness for the right cat O2 sensor.
Looking under the car, it was only the female connector that was damaged, the wires are still intact. Seems like the tech broke the black plastic housing to extract the wires (no clue why they would do that).
I think the easiest way to solve this is to splice the wires to either a spare female connector or direct to the O2 sensor.
Does anyone happen to have a old female connector they could spare? It would also be great if someone could verify the wiring color for me. On the female side the wires are Red, Pink, White & Black. I need to know what colors hook up to what colors on the O2 sensor side (White,White,Gray & Black).
Looking under the car, it was only the female connector that was damaged, the wires are still intact. Seems like the tech broke the black plastic housing to extract the wires (no clue why they would do that).
I think the easiest way to solve this is to splice the wires to either a spare female connector or direct to the O2 sensor.
Does anyone happen to have a old female connector they could spare? It would also be great if someone could verify the wiring color for me. On the female side the wires are Red, Pink, White & Black. I need to know what colors hook up to what colors on the O2 sensor side (White,White,Gray & Black).
Hey im having the same exact problem just on the passenger side. Did u ever find a diagram or fix yours? or do you have photos? Please help ASAp
Thread Starter
Registered User
Joined: Jul 2009
Posts: 11
Likes: 0
Just an update, it's been 3 years and I still have the same problem. As far as I can tell, the only issue is you would fail any emissions test and that damn light won't go off.
Couple of solutions I've thought about:
1) Pay Infiniti their $2.5k to $3k to get it fixed
2) Bypass the broken connector and splice directly to the O2 sensor. Future replacement of that sensor will suck, and you'd lose some wire each time.
3) Buy the engine control harness from a wrecked G, and cut and replace the broken connector.
As for the wiring/color code, I found the color code a while back but don't remember what it is anymore. The factory service manual has the connections and color code, and I used the color code stickied in the Bose audio wiring breakdown thread.
I'm leaning towards solution #3 but haven't gotten around to actually doing it yet. I'd be happy to post a DIY if someone wanted to sell me the engine control harness for cheap!
Couple of solutions I've thought about:
1) Pay Infiniti their $2.5k to $3k to get it fixed
2) Bypass the broken connector and splice directly to the O2 sensor. Future replacement of that sensor will suck, and you'd lose some wire each time.
3) Buy the engine control harness from a wrecked G, and cut and replace the broken connector.
As for the wiring/color code, I found the color code a while back but don't remember what it is anymore. The factory service manual has the connections and color code, and I used the color code stickied in the Bose audio wiring breakdown thread.
I'm leaning towards solution #3 but haven't gotten around to actually doing it yet. I'd be happy to post a DIY if someone wanted to sell me the engine control harness for cheap!
