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Code P1131 Upstream Oxygen Sensor location needed

Tiny
POLIZEME25
  • MEMBER
  • 1998 FORD CONTOUR
  • 2.1L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
Hi, need your help, my red light comes up on my dashboard. According to the
Scanner, the code is P1131.

I would like to know where the upstream Bank 1 sensor is located.
If possible a diagram would be very helpful.
Thank you, Kenny
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Wednesday, July 21st, 2021 AT 11:30 AM

3 Replies

Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
It is accessible from under the lower engine splash shield under the front of the vehicle.
I have attached a picture that should help you locate it. You can either use a box end wrench after cutting off the old connector, or use the special tool that you can pick up at most parts stores.

Here is also a guide that can help:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
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Wednesday, July 21st, 2021 AT 1:27 PM
Tiny
POLIZEME25
  • MEMBER
  • 61 POSTS
Thank you, what you sent me is very helpful. Always appreciate your help and technical expertise!
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Wednesday, July 21st, 2021 AT 1:33 PM
Tiny
BMDOUBLE
  • MECHANIC
  • 1,139 POSTS
You're very welcome!
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Thursday, July 22nd, 2021 AT 8:08 AM

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