Downstream O2 Sensor

REMOVAL - DOWNSTREAM 1/2
1. Disconnect the negative battery cable.
2. Raise and support the vehicle.

Fig. 26 Downstream Oxygen Sensor(1/2):

3. Disconnect the electrical connector.

Fig. 27 Downstream 2/1 O2 Sensor:

4. Use a socket such as the Snap-On YA8875 or equivalent to remove the sensor.
5. When the sensor is removed, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If using the original sensor, coat the threads with Loctite 771 - 64 anti-seize compound or equivalent.

INSTALLATION - DOWNSTREAM 2/1
The O2S is located on the side of the catalytic converter.

Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal. DO NOT add any additional anti-seize compound to the threads of a new oxygen sensor.

1. Install sensor and tighten to 27 Nm (20 ft. lbs.).
2. Connect the electrical connector.
3. Lower vehicle.
4. Install the negative battery cable.