That should have two upper wide band sensors and the lowers are "standard" O2 sensors. The normal thing for Toyota and Lexus is to call them an air fuel ratio sensor when they are the wideband versions and heated oxygen sensors when they are the common ones. The problem is that many parts places just call them all O2 sensors. All 4 positions use different sensor part numbers. However like many imports they might be the same sensor but with a different color connector or different length harness which gives them a different part number, even though the part is the same and the changes really don't matter. I've used NTK on Lexus before and they reported correctly, avoid the really off brands though, Like many imports Toyota-Lexus can be very finnicky when it comes to parts. I prefer OE if at all possible.
Bank one is the rear bank on that car, So the way they are listed in the parts is a mess. The Front upper is B2 S1, The Rear upper is B1 S1 (both wide band air fuel), Center is B2 S2 and the Lower is B1 S2 (both standard O2 sensors)
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Tuesday, July 8th, 2025 AT 7:07 AM
