Oxygen sensor location and replacement instructions needed

Tiny
LUISG5210
  • MEMBER
  • 2013 CHEVROLET MALIBU
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 68,000 MILES
Where is the o2 sensor bank 1 located on my car?
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Thursday, November 17th, 2016 AT 4:09 PM

33 Replies

Tiny
JIS001
  • EXPERT
On the exhaust manifold. See picture below. The one in the exhaust manifold will be bank 1 sensor 1, behind the catalytic converter is bank 1 sensor 2 on the image. Here is a guide to help you change the sensor out step by step with diagrams below to show you on your car

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Thursday, November 17th, 2016 AT 4:23 PM
Tiny
MAW0118
  • MEMBER
  • 2011 CHEVROLET MALIBU
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
Need to know how many O2 sensors are in the car listed above and where bank 1 sensor 2 is located exactly? I'm being told there are three, one 1 before and after the catalytic converter and also one inside the catalytic converter.
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

Banks 1 and 2 refer to either a V6 or V8 engine. You have an inline 4 cylinder. There are two sensors. As far as the sensors, one is mounted after the catalytic converter and one is mounted on the exhaust manifold.

There isn't one in the catalytic converter.

I attached a picture. Numbers 2 and 3 show the locations of the sensors. Number 2 is the heated O2 sensor which is referred to as number 1 and number 3 in the pic is the heated o2 sensor after the converter. I also attached a second picture and highlighted where the sensor is before the converter. Note that it is at the end of the exhaust manifold right where it would enter the converter.

Let me know if this helps or if you have other questions.

Joe
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
MAW0118
  • MEMBER
Thank you very much I believe I understand but to be clear sensor 2 is after the catalytic converter and I have looked down behind the engine (above the spark plugs) and seen an O2 hanging out. Now am I correct by saying that's before catalytic converter and I have to go right under that box "catalytic converter" and there should be another O2 hanging out?

Also the reason I said there where three O2 sensors is I went to AutoZone and priced the sensors and they came up with three different sensors (upstream, center stream, and down stream) so I was very concerned.
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome back:

There shouldn't be one above the spark plugs. Can you take a picture of what you are seeing and upload it for me?

The one after the catalytic converter is actually in the intermediate pipe. If you look that the converter, you will see where it flanges and bolts to the intermediate pipe. At the beginning of the intermediate.

In the first picture above, sensor 1 is shows or identified with a number 2. The one after the converter is sensor 2.

I attached two pics. In the first one, I circled the two sensors and identified which is sensor 1 and which is 2. In the second pic, I copied and pasted from the removal and replacement page. You will see that it only indicates two.

I have to be honest, I have seen sensors in the converter, but not this vehicle. However, as soon as I say it, I'll be wrong. LOL If I am, the manual is wrong, too. LOL

Please feel free to let me know if I can help.

Joe
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
JAVIER VEGA
  • MEMBER
  • 2010 CHEVROLET MALIBU
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 188,000 MILES
Car listed above is an LT. I changed the catalytic converter. The original one did not have a sensor connection and the one I installed does have a sensor connection. How can I make them work?
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
DANNY L
  • EXPERT
Hello, I'm Danny.]

I suppose you could go to a muffler/exhaust shop and have them weld in a pipe plug. Assuming you do not need 02 sensors for smog reasons. Hope this helps and thanks for using 2CarPros.

Danny-
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Saturday, May 8th, 2021 AT 1:21 PM (Merged)
Tiny
SWITCH68
  • MEMBER
  • 2005 CHEVROLET MALIBU
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 109,000 MILES
I need to change the bank 1 sensor 1 oxygen sensor can you help me? Please help Thank you
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
DANNY L
  • EXPERT
Hello, I'm Danny.

Here is the information you requested. This is a tutorial for you to view showing oxygen sensor replacement:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

I've attached picture steps below showing oxygen sensor replacement and location for your car. Hope this helps and thanks for using 2CarPros.
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
TOOLROX_923
  • MEMBER
  • 2002 CHEVROLET MALIBU
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Would someone be able to pinpoint exactly what I need for my car listed above LS model with a direct link to advance auto please? Thanks!

I'm trying to figure out what I need to get as well as where I might be able to locate it on the engine. Thanks!
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good morning,

I attached a picture of the location of the sensor for and a direct link with the part required from advanced auto.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

It is at the back by the firewall in the exhaust manifold. It is a very tight fit.

I would also ask for the socket for removing it as well when you go for the part.

Why are you replacing it?

https://www.2carpros.com/articles/how-an-oxygen-sensor-works

Roy

https://shop.advanceautoparts.com/p/acdelco-heated-oxygen-sensor-213-802/15730346-P?searchTerm=oxygen+sensor
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
TOOLROX_923
  • MEMBER
My check engine light came on the other day, so I took it to Advance to read the code and it is P0131 and it says it's the "Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 1 Sensor 1 DTC Severity 2 of 3: Repair immediately if drivability issues are present. Threat to essential system components if not repaired as soon as possible."

So I called this garage where I took it for another issues a few months back to inquire with them, and they said it's a fairly simple fix and that I could do it myself if I wanted, I just need to locate where cylinder 1 is at so that I can identify bank 1 sensor 1.I know nothing about car repairs so even though it may be a simple fix for some people, I am completely stupid about vehicles just like there are many people who know nothing about how to operate a computer. Lol. Thanks for all of your help!
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
You are welcome.

Always glad to help.

Roy
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
10POINTBOB
  • MEMBER
  • 2002 CHEVROLET MALIBU
  • 3.1L
  • V6
  • 2WD
  • AUTOMATIC
  • 176,000 MILES
How many o2 sensors are on my car listed above?
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
Good evening,

You have 2 sensors. One on the down pipe at the firewall wall side of the motor and one under the car behind the converter.

https://www.2carpros.com/articles/how-an-oxygen-sensor-works

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

I attached location below.

Roy
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
10POINTBOB
  • MEMBER
Thank you Sir. Very helpful.
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
ASEMASTER6371
  • EXPERT
You are welcome.

Always glad to help.

Roy
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Saturday, May 8th, 2021 AT 1:22 PM (Merged)
Tiny
THEBOSS
  • MEMBER
  • 2000 CHEVROLET MALIBU
I had code p0141 checked fuses changed bank # 2 sensor. Drove car for 2 days cel back on same code po141 please help with what to do next. Thanks-Jerry-
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Saturday, May 8th, 2021 AT 1:23 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
You should check the supply voltages to all of the oxygen sensors with a meter to ensure they are getting correct power. If one or all of them are without power (or too much), trace wiring and test for shorts/opens in the wiring.

Possible causes of the code are below:

A code P0141 may mean that one or more of the following has happened:

-Open or short to ground in the wiring harness

-O2 heater circuit wiring high resistance

-O2 heater element resistance is high

-Internal short or open in the heater element

Note: Typically a failed catalytic converter does not cause this code. You're more likely to see a P0420 code for a failed converter.

Possible Solutions:

-Replace oxygen sensor(s)

-Repair short or open or high resistance in wiring harness or harness connectors

Hope this helps.
Thanks for using 2carpros. Com!
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Saturday, May 8th, 2021 AT 1:23 PM (Merged)
Tiny
THEBOSS
  • MEMBER
Thank you for the reply, I had to replace both sensors and the cel is staying off. I do appreciate the information you supply to many of us. Thanks again-Jerry-
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Saturday, May 8th, 2021 AT 1:23 PM (Merged)

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