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is that down upstream or downstream sensor?
my downstream sensor failed and I replaces it with a part off Amazon for about $30? I also picked up an o2 sensor removal tool which allowed me to do it in about 20 minutes.
from what I read, O2 sensor technology has not changed really ever and the cheap parts are just as robust and work just as well as the expensive parts. it's been about a year and a half and I've had zero issues on the new part.
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