Where are the oxygen sensors located?

Tiny
JTAPIA
  • MEMBER
  • 2003 HUMMER H2
  • 6.0L
  • V8
  • 4WD
  • AUTOMATIC
  • 180,000 MILES
Bank Sensor Malfunction.
Friday, August 12th, 2022 AT 9:56 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

This vehicle has four oxygen sensors.
Two of them are located before the catalytic converter, after the exhaust manifold.
The other two are located after the catalytic converter on the exhaust pipe.

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

I have attached diagrams below for your reference.

Let me know of any questions.
Thank you.
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Friday, August 12th, 2022 AT 10:49 PM

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