Hello,
Bank 1 is going to be the bank at the front of the vehicle. O2 sensor 2 is going to downstream or the O2 sensor after the catalytic converter, closest to the muffler. I have included in the diagrams down below a diagram of the o2 sensors for a 5 cylinder and a v6. The O2 sensor for the V6 is for bank 2 so bank 1 would be the opposite. Please get back to us with what turns out.
This guide will help with the diagrams below.
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Tuesday, April 23rd, 2019 AT 7:44 PM