Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during air fuel ratio sensor removal/installation are shown below.

NECESSARY PROCEDURES AFTER PARTS REMOVED/INSTALLED/REPLACED

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Replacement of air fuel ratio sensor (sensor 1) Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	Refer to INITIALIZATION [11/2021 - ]

WARNING:

To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

COMPONENTS (REMOVAL)

Fig 1: Air Fuel Ratio Sensor (For Sensor 1) Removal Components (1 Of 2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Callout - Procedure		Part Name Code
1	FRONT FENDER PANEL CUSHION LH	53889A	-	-	-
2	FRONT FENDER PANEL CUSHION RH	53889A	-	-	-
3	HOOD TO FRONT FENDER SEAL LH	53389B	-	-	-
4	HOOD TO FRONT FENDER SEAL RH	53388D	-	-	-
5	WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY	-	-	-	-
6	COWL VENTILATOR SPLASH SHIELD LH	55752A	-	-	-
7	COWL VENTILATOR PANEL SUB-ASSEMBLY	55704B	-	-	-

Fig 2: Air Fuel Ratio Sensor (For Sensor 1) Removal Components (2 Of 2)

Callout - Procedure		Part Name Code
8	NO. 1 ENGINE COVER SUB-ASSEMBLY	12601B	See step 8	-	-
9	AIR FUEL RATIO SENSOR	89467B	See step 9	-	-