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Oxygen Sensor: Service and Repair

HEATED OXYGEN SENSOR (Sensor-1 and Sensor-2)




Removal

WARNING: To avoid danger of being burned, do not touch exhaust system when system is hot. Oxygen sensor removal should be performed when system is cool.

1. Disconnect negative cable at battery.
2. Hoist vehicle when removing sensor-2.
3. Disconnect coupler of heated oxygen sensor and release its wire harness from clamps.
4. Remove heated oxygen sensor from exhaust manifold or exhaust pipe.




Installation
Reverse removal procedure noting the following.
- Tighten heated oxygen sensor to specified torque.

Tightening Torque for heated oxygen sensor
45 N.m (4.5 kg-m, 32.5 lb-ft)

- Connect coupler of heated oxygen sensor and clamp wire harness securely.
- After installing heated oxygen sensor, start engine and check that no exhaust gas leakage exists.
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