LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2015 >> Outback 2.5i >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (H4DO) >> Rear Oxygen Sensor >> Removal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Rear Oxygen Sensor: Removal

  1. Disconnect the ground terminal from battery sensor. <Ref. to BATTERY , NOTE, Repair Contents.>
  2. Lift up the vehicle.
  3. Remove the under cover. <Ref. to REMOVAL , Front Under Cover.>
  4. Disconnect the rear oxygen sensor connector.
    Fig 1: Identifying Rear Oxygen Sensor Connector
    G10262202Courtesy of SUBARU OF AMERICA, INC.
  5. Remove the front mud guard RH. <Ref. to REMOVAL , Mud Guard.>
  6. Apply spray-type lubricant (004301003) or equivalent to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
  7. Remove the rear oxygen sensor.
    CAUTION: When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.
    Fig 2: Locating Rear Oxygen Sensor Bolt
    G10262203Courtesy of SUBARU OF AMERICA, INC.
scientia non olet · About LEMON Manuals