Oxygen Sensor: Service and Repair

WARNING:
To avoid danger of being burned, do not touch exhaust system when it is still hot. This work should be performed when it is cool.





1. Disconnect battery negative cable from battery and disconnect heated oxygen sensor wire at its coupler.
2. Remove heated oxygen sensor from exhaust manifold.
3. Install heated oxygen sensor and tighten it to specification.

Tightening Torque
(a): 39-46 Nm (28.5 - 33.0 lb-ft)

4. Connect heated oxygen sensor wire at the coupler securely.
5. Connect negative cable to battery.
6. Start engine and check for gas leak.

NOTE:
With Vehicles of Federal specifications except California emission specification ones, be sure to turn off malfunction indicator lamp ("CHECK ENGINE" light) with its cancel switch upon completion of service.