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Home >> Subaru >> 2006 >> Forester XT Limited, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection (Fuel Systems) (H4DOTC) >> Rear Oxygen Sensor >> Installation

Rear Oxygen Sensor: Installation

  1. Before installing rear oxygen (A/F) sensor, apply the anti-seize compound only to the threaded portion of rear oxygen (A/F) sensor. This facilitates the next removal.
    CAUTION: Never apply anti-seize compound to protector of rear oxygen sensor.

    Anti-seize compound: 

    NEVER-SEEZ NS-165 or the equivalent 

  2. Install the rear oxygen sensor.

    Tightening torque: 

    21 N.m (2.1 kgf-m, 15.2 ft-lb) 

    Fig 1: Locating Rear Oxygen Sensor
    G04998403
    • AT model
    Fig 2: Locating Rear Oxygen Sensor (AT Model)
    G04998405
    • MT model
    Fig 3: Locating Rear Oxygen Sensor (MT Model)
    G04998406
  3. Connect the connector to rear oxygen sensor.
    Fig 4: Locating Rear Oxygen Sensor Connector
    G04998401
  4. Connect the clip to the crossmember.
    Fig 5: Locating Clip
    G04998402
  5. Lower the vehicle.
  6. Connect the ground cable to battery.
    Fig 6: Disconnecting Battery Ground Cable
    G04988132