2002 dodge dakota o2 sensor questions

Asked by Apr 20, 2012 at 07:14 PM about the 2002 Dodge Dakota 2 Dr SXT 4WD Extended Cab SB

Question type: Maintenance & Repair

i need to replace one of the two o2 sensors on my 2002 dodge dakota. Parts guy asks post or pre.....left or right of cat....ive searched on and off all day cant find the answers. Please help!!!  
my guess is pre and left...

3 Answers

515

What motor is in the truck? If you got someone to pull the code it should have told them. Sensor one would be before the cat. converter and sensor two would be after it. That if your truck is federal emissions. if its calfifornia emissions then it will have 4 o2 sensors.

3 of 3 people found this helpful.
12,085

theres actually 3 if i remember correctly. theres one for each manifold, to measure each bank, and then theres one after the cat. Bank 1 sensor one is the driver side, before the cat Bank 2 sensor1 is the passenger side before the cat. if the code comes back as a "sensor 2" its the one after the cat. "sensor 1" is always pre cat. "sensor 2" is always post cat.

4 of 4 people found this helpful.

Thank you so much! Ive got the part and its going in today along with an oil change.

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