Oxygen Sensor: Service and Repair

Replacement

Primary HO2S:
1. Disconnect the left and/or right primary HO2S connector, then remove the left and/or right primary HO2S.
2. Install the left and/or right primary HO2S in reverse order of removal.











Secondary HO2S:
1. Move the front passenger's seat forward. Pull the carpet back to expose the secondary HO2S connector.
2. Disconnect the secondary HO2S connector.
3. Remove the wire harness cover, then remove the grommet.
4. Remove the heat shields.
5. Remove the secondary HO2S.
6. Install the secondary HO2S in reverse order of removal.