Heated Oxygen Sensor (HO2S) 2 Replacement (W/O Pup-TWC)
REMOVAL PROCEDURENOTE: Refer to Heated Oxygen and Oxygen Sensor Notice in Service Precautions.
IMPORTANT: The heated oxygen sensor (HO2S) may be difficult to remove at temperatures above 48°C (120°F). In order to prevent damage to any threads in the exhaust manifold, allow the exhaust system to cool down before attempting to remove the HO2S.
1. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
CAUTION: Refer to Vehicle Lifting Caution Vehicle Lifting Caution in Service Precautions.
2. Pull the HO2S 2 electrical connector (1) through the floor pan.
3. Disconnect the HO2S 2 (2) electrical connector.
4. Remove the HO2S 2 (2) from the exhaust pipe.
INSTALLATION PROCEDURE
1. Install HO2S 2 (2) into the exhaust pipe.
NOTE: Refer to Component Fastener Tightening Notice in Service Precautions.
IMPORTANT: The new HO2S 2 comes with an anti-seize coating on the sensor threads. Take precautions in order to prevent the removal of any of the anti-seize coating prior to installation. If the sensor was removed and is being reinstalled, an anti-seize compound must be applied to the threads before installation.
Tighten
Tighten HO2S sensor to 45 N.m (32 lb ft).
2. Connect the HO2S 2 (2) electrical connector.
3. Insert the HO2S 2 electrical connector (1) up through the opening in the floor pan.
4. Lower the vehicle.