Engine light on and codes P0031 and P0051

Tiny
LEROYHORTON
  • MEMBER
  • 2008 LEXUS ES 350
  • 3.5L
  • 6 CYL
  • 144,000 MILES
Had diagnostic text today at Toyota, they want $950.00 to replace the two sensors. Where are these sensors located on my car?
Friday, June 26th, 2020 AT 2:49 PM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Those are 2 different heated oxygen sensors that help control the emissions in your exhaust system. I've attached pictures below of there location and circled in red.Here is a tutorial showing what is involved in there replacement:

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

Hope this helps and thanks for using 2CarPros.
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Friday, June 26th, 2020 AT 3:58 PM

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