Question about 2001 Chevrolet Tahoe

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Universal oxygen sensor usos-4000 the white wires make a difrens? i have a 2001 chevy tahoe and i change my oxigen sensors all 4 pcs. but my truck start feeling weird.. that i have a difrent problem like my fuel pump is goin bad im thinking that it can be the color code in the sensors but they come whit two white wires and my truck whit two brown so im thinking that i conect them wrong plz hellp!!

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6ya6ya
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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: whit the oxigen sensors connected blown eng 1 fuse

there's a wire harness on the passenger side of the engine that controls the sensors. look for a shorted wire, maybe pink? follow the sensors back along the harness. good luck.

Posted on Aug 22, 2010

ZJLimited
  • 17970 Answers

SOURCE: I buy the USOS-4000 oxygen

Check this wires guide...

zjlimited_989.jpg

and color guide (click over image for zoom)...

zjlimited_990.jpg

Hope helps.

Posted on Apr 06, 2011

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1 Answer

Po136-o137 says change 02 sensor on bank 1 sensor2 I did but engine light is still on 2004 chevy tahoe


code p 0136 refers to heated oxygen sensor (HO2S) 2 bank 1 ---circuit malfunction===causes ---heating inoperative ---wiring---HO2S--- ECM
also refers to oxygen sensor (O2S0 2 bank 1---circuit malfunction===causes --- wiring---O2S ---ecm
it also refers to heated oxygen sensor (HO2S) 2 bank 1 ---no signal===causes ---wiring --- HO2S---
code p 0137 refers to HO2S 2 bank 1 ---low voltage -===causes --exhaust leak---wiring short to ground ---HO2S--- ECM
it also refers to O2S 2 bank 1---low voltage ===causes exhaust leak---wiring short to ground ---O2S ---ECM
to set you up here-- there are 4 oxygen sensors in the system
2 are heated oxygen sensors (HO2S) on in each exhaust manifold or exhaust pipe before the cat converter and
2 oxygen sensors (O2S) -- one in each exhaust pipe after the cat converters
heated oxygen sensors have 4 wires and O2S sensors normally only 2 wires
it is more that possible that you changed the wrong sensors and in the process damaged the delicate wires with the incorrect spanner being used

Jul 25, 2016 | 2004 Chevrolet Tahoe

3 Answers

Where is the oxygen sensor located on a 454 Chevy pickup engine


Anrez, your 1991 Chevy trucks O2 sensor could be located in the Y pipe just ahead of converter or in the front portion of the converter.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How to change Oxygen Sensor 1995 Chevy Suburban
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Jul 21, 2016 | Cars & Trucks

2 Answers

2001 Cadillac Deville oxygen sensor wiring diagram


The wiring diagram shows the wiring color code, Power rating and connector plug used. The wiring diagram explains the vehicle's electrical connections with color code. It's a bit complicated to understand.

6d70bec4-a83f-4733-a114-8a73592152a7.jpg

Apr 07, 2013 | 2001 Cadillac DeVille

1 Answer

Oxigen sensor


Under the chassis. Just near to connecting rod.

Aug 11, 2012 | 2001 Honda Accord

1 Answer

I change the knock sensor in my chevy tahoe 2001 and still have the same code po 332


The problem is not the sensor but most likely the blue wire has an open circuit between the sensor and the computer aka the pcm ..You are going to have to look real close at the sensor end of the harness it may be a broken wire right inside the insulation , hard to find good luck pcm connector c1 is where the other end of the blue wire will end up ..there is nothing between the computer and the sensor. just wire an ohmmeter and some patience im sure you will find it...hope this info helps..

Nov 23, 2009 | 2001 Chevrolet Tahoe

2 Answers

Oxygen sensor


right in front of the catalytic converter

Jan 24, 2009 | 1999 Chevrolet Blazer

1 Answer

WHICH O2 SENSOR HAS THE HEATER CIRCUIT IN IT BEFORE OR AFTER THE CATALYST


Hi.
The Oxigen sensor are in diferent kind.
1 -- With a single wire. " is only oxigen sensor"
2 -- With 2 wires " is only oxigen sensor"
3 -- With 3 wires " Is oxigen and heater sensor"
4 -- With 4 wires " is oxigen sensor and heater sensor.
5 -- with 6 wires " is oxigen, heater A/F sensor" normally Nissan)

OK........Your question.
Depend of the year of your car.
But all the car they are Bank 1 or single bank. Engine in line
4 cyl . or 6 cyl. And are identified sensor 1 bank 1 and sensor 2 bank 1. S11 or S21.
But all the Engines in V are bank 1 and bank 2.
Sensor 1 bank 1, sensor 2 bank 1, S11 or S21.
Sensor 1 bank 2, sensor 2 bank 2, S12 or S22.
Sensor one is alway before catalystic.
Sensor two is alway after catalystic.

If you have problen with the oxigen sensor you need to put a scanner to see the number of code, The number of code will give the especific sensor that you need to replace.
The code can be heater or oxigen. and can be refer to a the same sensor.

I hope this information work for youu.
Thank you for use fixya.

Jul 15, 2008 | Chevrolet Malibu Cars & Trucks

1 Answer

Oxigen sensor 4-wires /colore of signal wire


most of the times the signal wire is the black one,
but is definly not the red or the red with stripe,
so is eithr the white or the black.

May 28, 2008 | 1998 Isuzu Rodeo

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