Where is this O2 sensor?

Tiny
SLANDIS
  • MEMBER
  • 2005 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
Can anyone tell me the location of the O2 Sensor that the computer says is Bank 1 Sensor 1? I just need to make sure I have the right one, thanks!
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Monday, June 21st, 2010 AT 3:59 PM

3 Replies

Tiny
KEN
  • ADMIN
Hello,

The bank 1 sensor 1 is located at the front of the exhaust system in the exhaust manifold. Here is a guide to help you see what you are in for when doing the job.

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

Here is how you test it

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

Here are the locations for your car (Below)

Please let us know if you need anything else to get the problem fixed.

Cheers, Ken
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Tuesday, January 2nd, 2018 AT 7:01 PM
Tiny
STALLION
  • MEMBER
  • 2004 BUICK LESABRE
Engine problem 6 cyl Front Wheel Drive Automatic 75500 miles

Is there any tricks to know when changing the oxygen sensor before the catalytic converter?
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Tuesday, January 2nd, 2018 AT 7:02 PM (Merged)
Tiny
KEN
  • ADMIN
Hello,

The is no real trick the sensor size is 7/8 you can just use a wrench. Here is a guide to help you see what you are in for when doing the job.

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

(Here is the locations for your car below)

You might need to raise the car up to do the job.

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Tuesday, January 2nd, 2018 AT 7:02 PM (Merged)

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