Removal & Installation (ES300 & RX300)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Lexus SC 430, 2002 Lexus RX 300, 2002 Lexus LX 470, 2002 Lexus LS 430, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Two heated A/F sensors are used. Heated A/F sensor on rear (firewall side) down pipe is referred to as bank No. 1, sensor No. 1. Heated A/F sensor on front (radiator side) exhaust manifold is referred to as bank No. 2, sensor No. 1. Disconnect A/F sensor connector. Remove A/F sensor from exhaust manifold or exhaust down pipe. To install, reverse removal procedure. Tighten A/F sensor to specification. See TORQUE SPECIFICATIONS .