Where are the O2 sensors located?

Tiny
AMY SPAIN
  • MEMBER
  • 2001 CHEVROLET MALIBU
  • 3.1L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 235,000 MILES
O2 sensors location needed.
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Thursday, June 10th, 2021 AT 11:31 AM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
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.
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Thursday, June 10th, 2021 AT 8:35 PM

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