o2 sensor wire color decode - SR20 Forum
 
Thread Tools
#1 (permalink) Old 04-17-2009, 05:10 PM
Crush the Domestic Dino
 
Join Date: Dec 2003
Location: NY
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
(Thread Starter)
o2 sensor wire color decode

hey ,
Ive been searching and searching and cannot find a clear definative answer, some of the threads im finding say one thing and some say another. anyhow my question is.

The stock o2 sensor for my 97 200sx, has 3 wires, a red a black and a white.
I know black is the o2 sensor voltage wire, i think the white is o2 sensor voltage ground, and i think the red is 12v power for the heater?

Anyone know if im right or wrong, im trying to wire in a bosch 4 wire o2 sensor part number 15727

I plan on connected the bosch sensor as follows
Bosch------------OEM
Black-------------Black
Grey-------------White
White------------Red
White------------Ground to chassis

i did that and i dont notice any difference in the way my car performs, but i havent cleared the code yet.
sjsdperformance is offline  
Sponsored Links
Advertisement
 
#2 (permalink) Old 04-17-2009, 11:35 PM
Done.
 
Join Date: Sep 2006
Location: 'Deen, MD
Posts: 3,923
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 27 reviews
Not sure on a 97, thought this was on a 98 at first, which didn't make sense because 98's are 4 wire....

Sorry!

Anyhow, 98's = White is signal, black is ground. Two grey's are heater circuit.

So if using a non-OEM sensor, colors wouldn't match up, but the black to black, white to grey, and two whites to two grey's.

SR20DEEP MD

12 Subaru Legacy 2.5i Premium
04 Subaru WRX 'goon

Last edited by Cliff; 04-17-2009 at 11:36 PM.
Cliff is offline  
#3 (permalink) Old 04-18-2009, 01:14 AM
SE-R Geek
 
Join Date: Feb 2007
Location: Vadim @ Dash
Posts: 3,031
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 20 reviews
Listen carefully when I say never trust the colors them selves and align same color to same color without actually knowing what they actually are.

Nissan pulled one on us with the colors, and they kept on switching them around, thus they could never agree on the same color scheme, what it looks like 98+ Where they started using what ever Bosch has.

So here is what you need to know.

Bosch
Black = Signal
Grey = Ground
White = Heater Power and Ground
White = Heater Power and Ground

The O2 sensor has two white wires, they do not have a polarity, this is why it doesn't matter which you connect them, as long as both connect to the heater wires.

Now you have it connected semi correctly, if you were to connect the ground to the Black wire, you would be replacing your ECU right about now hehe.

Find out what exactly the red wire is, but most likely its the heater power like you have mentioned. Then the white wire should also be the heater. Afterwards hook up the gray wire to your intake manifold where the ECU ground are at.

For more information please check out my thread here.
CovertRussian is offline  
#4 (permalink) Old 04-18-2009, 09:32 AM
Crush the Domestic Dino
 
Join Date: Dec 2003
Location: NY
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
(Thread Starter)
yea ive been reading that thread, and its the most informative ive found, but my o2 sensor that i swapped over only has 3 wires (black,white,red) and the harness it connect to also only has 3 wires. Also i found out that on the 3 wire setup, the o2 sensor heater grounded itself through the exhaust via a grounding strap (which i can see hanging under the car, not connected, no downpipe for me open j pipe) Anyhow, So to solve the grounding issue i got ahold of a new bosch 15727 with 4 wires , so i could ground the o2 sensor heater heater. Now i so far im positive that black is signal ( your thread again and again reaffirmed that) and i was trying to trace the colors because i was throwing an p0135, an o2 sensor heater short circuit, from what ive found this is probably because the o2 sensor grounds itself through the exhaust, and my exhaust ends at the jpipe (no downpipe for me) As explained above. So yesteday i took the bosch sensor and connected straight to the engine harness, i connected the black wire straight to the same spot where the old black wire from the old sensor would connect to if it was plugged it. then i took the bosch grey wire and connected to white wire would patch through because i figured that if anything, on a 3 wire setup the ecu would need to a signal ground, rather then a heater ground (and i read the heater grounds through the exhaust) therefore i assumed the white wire was signal ground. (which on the bosch sensor is grey) Lastly i connected one of the bosch white wires (heater ground/power ) to where the red wire would patch through to provide power to the unit (assuming the red wire from the original 3 wire setup is actually power). And lastly i grounded the 4th remaining bosch wire to body ground, the same way the original o2 sensor would ground through the exhaust.

I think this should be correct, and in theory i shouldnt throw the code anymore but i havent had a chance to clear the code yet and see. Any thoughts?

Last edited by sjsdperformance; 04-18-2009 at 09:36 AM.
sjsdperformance is offline  
#5 (permalink) Old 04-19-2009, 12:31 AM
SE-R Geek
 
Join Date: Feb 2007
Location: Vadim @ Dash
Posts: 3,031
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 20 reviews
You blew a fuse, start pulling fuses and find which one you blew for the heater circuit, I don't exactly remember which one it is.

Your paragraph is a word-dismal, and I had a hard time following.

DO NOT connect the gray wire to any of the heater wires. You will be giving a definite ground to a wire that sometimes has a ground but will short when it doesn't. The O2 sensor uses the exhaust for the ground for the signal ONLY. This is why 3 wire O2 sensors don't have a designated ground wire. We have talked to Bosch them selves, and that is what they told us. So you can trust what ever misinformation you can find on the web, or the guys that actually made this sensor.

Here is how it's going to work, you either wire up to the diagram below, which is what I have tried to explain above, or your car will run like crap and you will have O2 sensor problems. No if's no but's, just do it right the first time.

Just for you I made this diagram, but hopefully it will help other people.
CovertRussian is offline  
#6 (permalink) Old 04-19-2009, 12:45 PM
Crush the Domestic Dino
 
Join Date: Dec 2003
Location: NY
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
(Thread Starter)
O.K i just wired everything up this way, and it idles smoother and i think i noticed better throttle response and a bit more power. I would have never guessed the signal wire was in the middle. I tried to clear the codes by unplugging the battery for 20mins with no luck. I will clear them this week and report back. Thanks Vadim
sjsdperformance is offline  
#7 (permalink) Old 04-19-2009, 06:55 PM
Crush the Domestic Dino
 
Join Date: Dec 2003
Location: NY
Posts: 336
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 3 reviews
(Thread Starter)
PERFECT cleared the code car runs much much better now. Before it would come back on in a single trip, ive gone 5 trips today with no light. Thanks again vadim
sjsdperformance is offline  
#8 (permalink) Old 04-19-2009, 07:59 PM
Done.
 
Join Date: Sep 2006
Location: 'Deen, MD
Posts: 3,923
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 27 reviews
Quote:
Originally Posted by sjsdperformance View Post
O.K i just wired everything up this way, and it idles smoother and i think i noticed better throttle response and a bit more power. I would have never guessed the signal wire was in the middle. I tried to clear the codes by unplugging the battery for 20mins with no luck. I will clear them this week and report back. Thanks Vadim

IIRC, someone told me that every nissan connector that is two wire has signal on the right as you look into the connector, and every three wire connector has signal on pin two of the connector.

SR20DEEP MD

12 Subaru Legacy 2.5i Premium
04 Subaru WRX 'goon
Cliff is offline  
#9 (permalink) Old 04-19-2009, 11:47 PM
SE-R Geek
 
Join Date: Feb 2007
Location: Vadim @ Dash
Posts: 3,031
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 20 reviews
Quote:
Originally Posted by sjsdperformance View Post
O.K i just wired everything up this way, and it idles smoother and i think i noticed better throttle response and a bit more power. I would have never guessed the signal wire was in the middle. I tried to clear the codes by unplugging the battery for 20mins with no luck. I will clear them this week and report back. Thanks Vadim
Quote:
Originally Posted by sjsdperformance View Post
PERFECT cleared the code car runs much much better now. Before it would come back on in a single trip, ive gone 5 trips today with no light. Thanks again vadim
I'm happy to hear

Quote:
Originally Posted by TeKKiE View Post
IIRC, someone told me that every nissan connector that is two wire has signal on the right as you look into the connector, and every three wire connector has signal on pin two of the connector.
That would make sense and would be nice. Because obviously they couldn't make up their mind on what colored wires to use
CovertRussian is offline  
#10 (permalink) Old 01-20-2010, 02:13 PM
Nissan
 
Join Date: Nov 2007
Location: Trinidad and Tobago
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
So what if I test the three wires on the harness side

When Multimeter is connected I get power on pin1 and pin2, no power on
pin3.
pin1
pin2
pin3

On the o2 sensor side there's 3 wires, 2 white and one black. Can you tell me if my connection is correct as listed here:
pin1 - white wire.
pin2 - white wire.
pin3 - black signal wire. ? Can this be the signal wire that the black wire from the o2 sensor connects to?


On another note:
Before the above, it was connected like this -
pin1 - black signal wire.
pin2 - white wire.
pin3 - white wire. Can anything go wrong with the sensor since it was connected like this?

Thank you.


Here is how it's going to work, you either wire up to the diagram below, which is what I have tried to explain above, or your car will run like crap and you will have O2 sensor problems. No if's no but's, just do it right the first time.

Just for you I made this diagram, but hopefully it will help other people.
[/QUOTE]

Last edited by Scoppious; 01-20-2010 at 02:21 PM.
Scoppious is offline  
#11 (permalink) Old 01-20-2010, 03:16 PM
Nissan
 
Join Date: Nov 2007
Location: Trinidad and Tobago
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Bump
Scoppious is offline  
#12 (permalink) Old 01-20-2010, 09:13 PM
SE-R Newbie
 
Join Date: Jun 2009
Location: GWADELOUP FWI represent!
Posts: 85
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Quote:
DO NOT connect the gray wire to any of the heater wires. You will be giving a definite ground to a wire that sometimes has a ground but will short when it doesn't. The O2 sensor uses the exhaust for the ground for the signal ONLY. This is why 3 wire O2 sensors don't have a designated ground wire. We have talked to Bosch them selves, and that is what they told us. So you can trust what ever misinformation you can find on the web, or the guys that actually made this sensor.
So I have the same O2 sensor 3 wires , white , red , black but I don't have harness. I Don't understand that the O2 sensor don't have a designated ground... DOes that mean:

white==> pin 19
Red+12v and black ground or black +12v red ground like I want??

Quote:
You will be giving a definite ground to a wire that sometimes has a ground but will short when it doesn't.
How can i plug the sensor
lamaf971 is offline  
#13 (permalink) Old 01-21-2010, 08:04 PM
Nissan
 
Join Date: Nov 2007
Location: Trinidad and Tobago
Posts: 33
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Anyone here can assists us?
Thanks.
Scoppious is offline  
#14 (permalink) Old 01-21-2010, 08:30 PM
SE-R Nut
 
Join Date: Oct 2008
Location: new york
Posts: 1,281
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 4 reviews
Quote:
Originally Posted by Scoppious View Post
So what if I test the three wires on the harness side

When Multimeter is connected I get power on pin1 and pin2, no power on
pin3.
pin1
pin2
pin3

On the o2 sensor side there's 3 wires, 2 white and one black. Can you tell me if my connection is correct as listed here:
pin1 - white wire.
pin2 - white wire.
pin3 - black signal wire. ? Can this be the signal wire that the black wire from the o2 sensor connects to?


On another note:
Before the above, it was connected like this -
pin1 - black signal wire.
pin2 - white wire.
pin3 - white wire. Can anything go wrong with the sensor since it was connected like this?

Thank you.


Here is how it's going to work, you either wire up to the diagram below, which is what I have tried to explain above, or your car will run like crap and you will have O2 sensor problems. No if's no but's, just do it right the first time.

Just for you I made this diagram, but hopefully it will help other people.
[/QUOTE]


is this the same for a b13 and i have an o2 sensor with red,white,black wires that was cut by the owner ** me and i dont no how to wire them back up could u break this down kindergarden style for me lol but no really could u

98 sentra se 2.0 (bone stock for now )
91 xe-r turbo
92 b13 sold
91 b13 blew up
94 xe crashed
92 b13 parted out
97 prelude gone
95 prelude gone

boost...... my anti drug
nismo chris is offline  
#15 (permalink) Old 01-21-2010, 08:39 PM
SE-R Newbie
 
Join Date: Jun 2009
Location: GWADELOUP FWI represent!
Posts: 85
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
May be it's:

White: pin 19 ecu signal
Red: +12v where you want
Black: pin 111 (sure for sr20de but no information for det) for ground. >3200 rpm signal is 0,2v and <3200rpm => 12v
lamaf971 is offline  
Sponsored Links
Advertisement
 
Reply

  SR20 Forum > Main Forums > Turbo


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome