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Downstream O2 sensor wiring diagram needed?

Tiny
DANBLOMBURG
  • MEMBER
  • 2004 CHRYSLER PACIFICA
  • 173,000 MILES
I am replacing the downstream O2 sensor. The wiring harness on the car is missing. I need a wiring diagram to know what wires to match the wires on the new sensor to.
Sunday, February 5th, 2023 AT 6:46 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Sure, here are the engine wiring diagrams which include the oxygen sensor wiring. I have also included a guide to help you check the connection once the repair is complete.

https://www.2carpros.com/articles/how-to-check-wiring

Check out the images (below). Please let us know if you need anything else to get the problem fixed.
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Monday, February 6th, 2023 AT 11:50 AM

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