Q: Is bank 2 sensor 1 upstream or downstream?
Trying to order an o2 sensor for my Avalon . Code said bank2 sensor1 so is that downstream or ustream and is it left or right
My car has an automatic transmission.
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Anytime the code reader says sensor 1, it is referring to the upstream. Anytime the code reader says sensor 2, it is referring to the downstream. If you need further assistance with your oxygen sensors, then seek out a professional, such as one from Your Mechanic, to help you.
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