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Home >> Subaru >> 2006 >> Forester X, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection (Fuel Systems) (H4SO) >> Front Oxygen (A/F) Sensor >> Removal

Front Oxygen (A/F) Sensor: Removal

  1. Disconnect the ground cable from battery.
    Fig 1: Disconnecting Battery Ground Cable
    G04988132
  2. Remove the clip fastening the harness and disconnect the front oxygen (A/F) sensor connector.
    Fig 2: Identifying Rear And Front Oxygen (A/F) Sensor Connector
    G04992289
  3. Lift-up the vehicle.
  4. Remove the under cover.
  5. Apply spray-type lubricant to the threaded portion of front oxygen (A/F) sensor, and leave it for one minute or more.
  6. Remove the front oxygen (A/F) sensor.
    CAUTION: When removing the front oxygen (A/F) sensor, wait until exhaust pipe cools, because it can damage the exhaust pipe.
    Fig 3: Identifying Front Oxygen (A/F) Sensor And Rear Oxygen Sensor
    G04992290
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