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Home >> Subaru >> 2020 >> Ascent Limited >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System >> Rear Oxygen Sensor >> Removal

Rear Oxygen Sensor: Removal

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CAUTION: Vehicle components are extremely hot after driving. Be wary of receiving burns from heated parts.
  1. Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
  2. Lift up the vehicle.
  3. Remove the under cover front. Ref. to EXTERIOR/INTERIOR TRIM>FRONT UNDER COVER>REMOVAL .
  4. Remove the mud guard front LH. Ref. to EXTERIOR/INTERIOR TRIM>MUD GUARD>REMOVAL .
  5. Apply spray-type lubricant (004301003) or equivalent to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
  6. Disconnect the rear oxygen sensor connector (A), and remove the rear oxygen sensor.
    CAUTION: When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.
    G13198322Courtesy of SUBARU OF AMERICA, INC.