Oxygen Sensor 1/2 Downstream

The downstream heated oxygen sensor threads into the exhaust pipe behind the catalytic converter.

REMOVAL
1. Raise Vehicle.
2. Disconnect electrical connector from sensor.
3. Disconnect sensor electrical harness from clips along body.

Oxygen Sensor 1/2 Downstream:

4. Remove sensor using an oxygen sensor crow foot wrench such as Snap-On tool YA8875 or equivalent.

INSTALLATION
1. After removing the sensor, the exhaust manifold threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite� 771-64 or equivalent. New sensors have compound on the threads and do not require an additional coating. Tighten the sensor to 28 N.m (20 ft. lbs.) torque.
2. Connect sensor electrical harness to clips along body.
3. Connect electrical connector to sensor.
4. Lower vehicle.