Oxygen Sensor: Service and Repair

Heated Oxygen Sensor Replacement Procedure

1. Remove the Heated Oxygen Sensor (H02S):





a. Primary H02S:
- Disconnect the primary H02S connector, then remove the primary H02S.





b. Secondary H02S:
- Disconnect the secondary H02S connector, remove the harness clamps, then remove the secondary H02S.
2. Install the primary and secondary H02S in reverse order of removal.