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Discussion Starter #1
A while back one of my buddies who is a tech for a dodge dealership hooked up the DRB to my truck (2000 3.9l v6 dakota) cause the engine light was coming on. He said the lower 02 sensor was shooting a code but didnt tell me the code.

Well now it is time to smog this puppy so I guess I have to fix it. I called the dealership to see if they have any in stock and they have one downstream. I assume the lower 02 sensor is the downstream sensor, would I be correct with that assumption?

I just want to be sure before I go pop 100.00 on the wrong sensor. Thanks in advanced.
 

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Yes that would be correct but, it is possible that the cat is bad and the sensor is good .
My 2 cents.
 
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Discussion Starter #3
cat was bad, it was already replaced and the lower 02 still shoots the code. Thanks for your response. I guess I will run up to dodge and buy it.
 
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