I have a 1996 Dodge Neon 2.0 L Vin C. DTC P0171 when I went to change 02 Sensor. I saw that my upstream 02 sensor connector harness side got melted, was to close the the exhaust. Don't know how to find which wire goes where, how do I figure this out. Your help will be so much appreciated. I have a wire diagram, still need help please.

  • 1
    Can you pull out your cell phone, take a picture of that wiring diagram, put it somewhere public online and edit your post to add the link? Is that a heated oxygen gas sensor or not heated? I thought for that car it was a single wire element. Additionally photos of your sensor parts would be helpful. thanks.
    – zipzit
    Commented Jun 6, 2016 at 8:11
  • I would think its a 4 wire. Given that it is 4 wire, you have 2 grounds, a heater wire and a signal wire. You can find a schematic for your car to determine what wire goes where. Not sure how to tell on the o2 side, unless you can look it up from the manufacturer.
    – rpmerf
    Commented Jun 6, 2016 at 10:32


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