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Home >> Subaru >> 2016 >> Crosstrek Hybrid >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel Injection System (Hybrid) >> Rear Oxygen Sensor >> Removal

Rear Oxygen Sensor: Removal

  1. Disconnect the ground cable from battery. < Ref. to BATTERY , NOTE, Note. >
    NOTE: For the 12 volt engine restart battery, disconnect the ground terminal from 12V engine restart battery sensor.
  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: Locating Rear Oxygen Sensor Connector
    G09487161Courtesy of SUBARU OF AMERICA, INC.
  5. Apply spray-type lubricant to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
  6. 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
    G08315457Courtesy of SUBARU OF AMERICA, INC.
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