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Oxygen Sensor: Service and Repair
HO2SReplacementPrimary HO2S: 1.
Disconnect the primary HO2S connector, then remove the cover.
2.
Remove the primary HO2S.
3.
Install the primary HO2S in reverse order of removal.
Secondary HO2S: 1.
Disconnect the secondary HO2S connector, then remove the secondary HO2S.
2.
Install the secondary HO2S in reverse order of removal.