Removal [08/2020 - ]: Procedure
WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
- REMOVE AIR FUEL RATIO SENSOR
WARNING:
To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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- Disengage the 2 wire harness clamps.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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- Disconnect the air fuel ratio sensor connector.
- Using SST, remove the air fuel ratio sensor from the front exhaust pipe assembly (TWC: Rear Catalyst).
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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NOTE:
If the air fuel ratio sensor has been struck or dropped, replace it.