Sienna AWD V6-3.5L (2GR-FE) (2007)
Oxygen Sensor: Service and Repair
Heated Oxygen Sensor (For 4WD)
REMOVAL
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
2. REMOVE HEATED OXYGEN SENSOR (for Bank 1 Sensor 2)
a. Disconnect the sensor connector under the center console.
b. Using SST, remove the heated oxygen sensor.
SST 09224-00010
3. REMOVE FRONT EXHAUST PIPE ASSEMBLY
a. Disconnect the heated oxygen sensor (for Bank 2 Sensor 2) connector.
b. Remove the 2 bolts, 4 nuts and front exhaust pipe assembly.
4. REMOVE HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)