Heated Oxygen Sensor (HO2S) 1 Replacement

HEATED OXYGEN SENSOR (HO2S) 1 REPLACEMENT

TOOLS REQUIRED
J 39194-C Oxygen Sensor Wrench

REMOVAL PROCEDURE

NOTE: The HO2S uses a permanently attached pigtail and connector. This pigtail should not be removed from the HO2S. Damage or removal of the pigtail or connector could affect proper operation of the sensor.

1. Turn ignition OFF.
2. Disconnect the HO2S-1 harness connector.
3. Remove the sensor harness and connector from the attachment clip.
4. Use a liquid penetrate before removing the sensor.

NOTE: Removal of the sensor is easier if the exhaust system is slightly warmed up. Be careful that the exhaust is not hot to work on safely. Moving the sensor back and forth while applying penetrating oil to the threads will aid in removal and will decrease the chance of exhaust pipe thread damage.

5. Remove the HO2S-1 using the J 39194-C or equivalent.

INSTALLATION PROCEDURE

NOTE: Silicone based products will contaminate the HO2S. Use only a nickel based anti-seize compound that does not contain silicone.

1. Apply a small amount of anti-seize compound SA P/N 21485279 or equivalent to the threads of the HO2S-1.

NOTE: Refer to Fastener Notice in Service Precautions.

2. Install the HO2S-1 using the J 39194-C or equivalent.

Tighten the oxygen sensor-to-exhaust manifold pipe to 45 N.m (33 lb ft).

NOTE: Do Not apply any material in the HO2S-2 harness connector such as grease or dielectric compound. The wires carry air reference to the sensor in order for the sensor to operate properly.

3. Install the sensor harness and connector to the attachment clip.
4. Connect the HO2S-1 harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.