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I'm replacing my oxygen sensor in my Tundra. I purchased a Bosch universal sensor. It has 4 wires: 1 black; ; 1 gray; 2 white. My existing harness has 4 wires: 2 black; 1 white; 1 blue. How do I know which wire goes where?

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I am replaceing my existing o2 sensor with a bosch oe smartlink universal sensor. the existing wires are brown/yellow, gray, pink/black. and green. how do I wire the new sensor to the old wires?


you need the factory color code and the bosch color codes.
then wire per that. there is no other way. (universal)
that is the penalty for not using a PNP sensors, plug and play.
do not mess up,wiring the 1 heater to the CELL + wire
risks blowing out the senor or ECU. a $500 error.

here a list. 89-98 list.
first the bosch list ,with comments. my 91 , just and example.
http://www.fixkick.com/oxy-sensor/bosch-pinout.JPG

all bosch unversals sensors have a paper inside,
and is very hard to read and understand.
my guess is it fails german translations.....
no biggy
your car is a 4 wire sensor.
on my cars 96 , the heater wires are non polar so are much easier. lets do them first.
the bosch color is.white, on my car its blk.
so i wired, bosch white to my cars black. x2
bosch gray is sensor ground, (special) wired to cars white wire.
every year, suzuki changes wire colors, not reading the FSM is FAIL.
and last my Bosch CELL+ pin is black and wires to my cars blue.
O2 are like battery CELLS, and are Polar.
Suzuki changed the blue color like a drunk sailor spends money.
a royal PITA. that is. LOL !

the for sure solution is to look it up in the FSM.
for all wire, find your blue, and win !
http://www.scantool.net/software/alldata-diy-1-month-subscription.html


see the 9 times suzuki changes here, prior to 2004

http://www.fixkick.com/sensors/OxyGen_sensor_help.html

did they change in 2006, ? Ill never know, as Suzuki is bust here.
nor will i pop for $15 to find out. When my Suz, dies, that be the end.
btw 2: the sensor colors on any suzuki are "NCA". FSM drawings.
no color assigned.
the colors mentioned are HARNESS colors in the sensor side.
suzuki uses many different brands sensors and colors, or reserves the right to do so at anytime. Bosch, NGK, Delphi, etc.
tricky huh? thus the pages , linked.
back in 1996 they should have set ISO standards but did not....

i hope that is not confusing.
but in a nut shell.
1: grab bosch sheet,
2: grab the car schematic, for ECU. (fsm, or alldata, or mitchells)
there is your answer.
no man as the blue wire color on all car or all suzuki;'s
not yet. tell my yours and ill update my records.

Aug 17, 2013 | 2006 Suzuki Forenza

1 Answer

Bosch 02 sensor downstream on a 1996 Jeep grand cherokee 4.0 motor. I have no wire harness to match the colors to. bosch has two white, one grey and one black. Jeep has orange/green,black/brown,black/blue...


The two white are the heater
The black the ground
The gray the O2 Sensor output,
you back probe to check Voltage
& Switching Times

The vehicle wiring harness does not have to match
the sensor, BUT -- you need to have the same
connector on the sensor

If you have a universal cut & splice, you have junk,
and we given the wrong part

Get a Bosch or NGK, OEM sensor & just
plug it in

Jun 23, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

Having trouble with wiring of oxygen sensor


there should be a paper inside the parts box that tells you how to rewire the after market sensor

Jan 21, 2010 | 1997 Geo Metro

1 Answer

Replace oxygen sensor for 4cyl 01" Accord - wires don't match


Don't put a universal oxygen sensor in your vehicle. You will have nothing but problems, and you will have to put an OEM one in it anyway.

May 30, 2009 | 1996 Jeep Grand Cherokee

1 Answer

Replacing 2004 Hyundia Elantra O2 Sensor


Had the same problem You need to go to dealer and order an O2 sensor with California emissions. The wire will be longer and fit into the prong

Apr 19, 2009 | 2004 Hyundai Elantra

1 Answer

Ford focus 1999


Pin --- Color --- Stripe --- Function

Harness 1

1 --- White --- Black --- Left front +
2 --- Gray --- Black --- Left front -
3 --- White --- Purple --- Left rear +
4 --- Gray --- White --- Left rear -
5 --- White --- Red --- Right front +
6 --- Gray --- Red --- Right front -
7 --- White --- (none) --- Right rear +
8 --- Gray --- (none) --- Right rear -

Harness 2

1 --- (not used)
2 --- Black --- Green --- Radio Ground
3 --- (not used)
4 --- Orange (thin) --- Black --- Radio Illumination
5 --- Green --- Yellow --- Radio switch
6 --- Black --- Yellow --- Radio Ground
7 --- Orange (thick) --- Black --- Radio 12V

Harness 3

1 --- White --- Green --- Speed sensor
2 --- (not used)
3 --- (not used)
4 --- (not used)
5 --- (not used)
6 --- (not used)

Dec 22, 2008 | 2003 Ford Focus

1 Answer

Installing universal Oxygen sensor


here is the 97 civic electrical diagrams. after you download and unzip the file, try 17252.pdf.

Oct 11, 2008 | 1996 Honda Civic

1 Answer

Oxygen sensor on a 93 civic dx


the sensor you got is for the 1997 model

Jun 16, 2008 | 1993 Honda Civic 4 Door

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