02 sensors location and how to replace instructions needed

2005 FORD TAURUS
110,200 MILES • 3.0L • V6 • 2WD • AUTOMATIC
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MISSWIMMS77
  • MEMBER
  • 40 POSTS
I keep getting a code for my check engine light saying bank to sensor to lean. when i look up possible causes it comes back to my 02 sensors, however there are four on this car i believe. So, how do i know which one to change or should i change all or do i change just the one? i got the 02-socket set and two of the 02 sensors, one up and one downstream as i thought it only had two not four. i need to know how to locate and change them please.
Jul 7, 2022 at 8:32 AM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

Could you provide the code you found? That will tell me which sensor is a problem. Also, I will let you know if there could be something additional to check.

Here is a link you may find helpful. It describes in general how to replace an O2 sensor.

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

Let me know.

Joe
Jul 7, 2022 at 1:56 PM