Cleaning 02 Sensor..........any fuel additives?

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The check engine light comes on occasionally on my son's Ford Explorer........the codes say it is an 02 sensor. Is there a fuel additive that would help clean them?
 
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Not only time, but how much money will you waste messing around with additives and decreased fuel economy from poor 02 sensor operation? Just replace it.
 
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Nothing you can do or put in the tank will clean them. +1 on replacing the front, replace the rear only when it has a code. Old rear O2 is better at avoiding the dreaded P420/430 codes.
 
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Originally Posted By: Ramblejam
Not only time, but how much money will you waste messing around with additives and decreased fuel economy from poor 02 sensor operation? Just replace it.
+1 Generally the part isn't too expensive and it is an easy fix.
 
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The front lambda is the one that adjusts the A/F mixture. The rear is only a cat wellness/life monitor. What year mileage?
 
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Originally Posted By: Trav
Nothing you can do or put in the tank will clean them. +1 on replacing the front, replace the rear only when it has a code. Old rear O2 is better at avoiding the dreaded P420/430 codes.
Exactly. Trav, you always post correct and useful information. I noticed that and just wanted to compliment you on that.
 
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The cheapest upstream O2 sensor (from rockauto) is only $26-40 each on rockauto, and they will outperform any cleaning you will ever be able to do. For the same price or a bit more, you can buy the same OEM vendor sensor that came with your car (Denso, NTK/NGK, Bosch, etc).
 
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What is the exact code? It could be upstream, downstream, left bank, right bank. It could also be a blown fuse in the heating circuit.
 
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