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What do you think the solution is?

  • Replace Bank 2 Sensor 1 Sensor

    Votes: 5 100.0%
  • Fix unknown, thus far, Exhaust Leak

    Votes: 0 0.0%
  • Replace Bad Catalytic Converter

    Votes: 0 0.0%
  • Place a charge of C4 inside the vehicle and energize

    Votes: 0 0.0%

  • Total voters
    5
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Yes.

Sensor 1, aka A/F sensor is before first cat.
Sensor 2, aka o2 sensor is after first cat, before 2nd cat.

Bank 1 is passenger side, bank 2 is driver side (for a LHD FJ, lol).
THANK YOU, THANK YOU. Now how do I find out which part number for which sensor? For example, the Amazon part referenced in this post is for an "A/F" sensor. Will that work for the drivers or passenger side? Or is it only for the drivers side? I'm having a hard time figuring out which exact part number works for which side and type.
 

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Both sides have the same sensors.

To my knowledge Denso part numbers are DOX0263 for A/F and DOX0237 for O2 sensors.

Toyota part numbers are 89467-71020 for A/F and, surprise, 89465-35670 for bank 2, and 89465-35680 for bank 1. Welp, I dunno, Denso cross-references both with the same p/n so I guess the difference should be in wire length or something.

Rememeber to stay away from non-OEM and non-Denso sensors.
 

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