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Rear Heated Oxygen Sensor (Ho2S) Removal/Installation: Notes

  1. Remove the rear HO2S connector.
  2. Remove in the order indicated in  3.
  3. Install in the reverse order of removal.
    Fig 1: Rear Heated Oxygen Sensor (HO2S) With Torque Specifications
    G04563019Courtesy of MAZDA MOTORS CORP.