Where are the O2 sensors located?

2001 CHEVROLET MALIBU
235,000 MILES • 3.1L • 6 CYL • 2WD • AUTOMATIC
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AMY SPAIN
  • MEMBER
  • 1 POST
O2 sensors location needed.
Jun 10, 2021 at 4:31 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Hi,

On this vehicle, there are two. One is on top of the exhaust manifold and the other is under the vehicle on the exhaust.

If you look at the two pics below, I highlighted the sensors. The one on the exhaust manifold is sensor 1. The one under the vehicle is sensor 2.

I don't know if you need them, but here are directions for testing an oxygen sensor:

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

Also, here is a link that explains how one is replaced:

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

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

Take care,

Joe

See pics below.
Jun 10, 2021 at 1:35 PM
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