Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSENSORS AND SWITCHES - COMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORSERVICE AND REPAIRAIR FUEL RATIO SENSOR
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Air Fuel Ratio Sensor
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Air Fuel Ratio Sensor
REMOVAL
1. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
a. Disconnect the air fuel ratio sensor connector and clamp.
b. Using SST, remove the air fuel ratio sensor from the exhaust manifold converter sub-assembly.
SST 09224-00010
NOTE: Do not damage the air fuel ratio sensor.
2. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
a. Disconnect the air fuel ratio sensor connector and clamp.
b. Using SST, remove the air fuel ratio sensor from the exhaust manifold converter sub-assembly No.2.
SST 09224-00010
NOTE: Do not damage the air fuel ratio sensor.
INSTALLATION
1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1)
a. Temporarily tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly.
NOTE: Do not damage the air fuel ratio sensor.
b. Using SST, fully tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly.
SST 09224-00010
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
c. Connect the air fuel ratio sensor connector and clamp.
2. INSTALL AIR FUEL RATIO SENSOR (for Bank 2)
a. Temporarily tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly No.2.
NOTE: Do not damage the air fuel ratio sensor.
b. Using SST, fully tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly No.2.
SST 09224-00010
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
c. Connect the air fuel ratio sensor connector and clamp.
1. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
a. Disconnect the air fuel ratio sensor connector and clamp.
b. Using SST, remove the air fuel ratio sensor from the exhaust manifold converter sub-assembly.
SST 09224-00010
NOTE: Do not damage the air fuel ratio sensor.
2. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
a. Disconnect the air fuel ratio sensor connector and clamp.
b. Using SST, remove the air fuel ratio sensor from the exhaust manifold converter sub-assembly No.2.
SST 09224-00010
NOTE: Do not damage the air fuel ratio sensor.
INSTALLATION
1. INSTALL AIR FUEL RATIO SENSOR (for Bank 1)
a. Temporarily tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly.
NOTE: Do not damage the air fuel ratio sensor.
b. Using SST, fully tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly.
SST 09224-00010
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
c. Connect the air fuel ratio sensor connector and clamp.
2. INSTALL AIR FUEL RATIO SENSOR (for Bank 2)
a. Temporarily tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly No.2.
NOTE: Do not damage the air fuel ratio sensor.
b. Using SST, fully tighten the air fuel ratio sensor to the exhaust manifold converter sub-assembly No.2.
SST 09224-00010
Torque: 44 N.m (449 kgf.cm, 32 ft.lbf)
c. Connect the air fuel ratio sensor connector and clamp.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.