2014 Subaru TribecaFACTORY OEM SERVICE PROCEDURE

Rear Oxygen Sensor: Installation

CAUTION: If lubricant is spilt over the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.
  1. Before installing rear oxygen sensor, apply the anti-seize compound only to the threaded portion of rear oxygen sensor to make the next removal easier.
    CAUTION: Never apply anti-seize compound to the protector of rear oxygen sensor.

    Anti-seize compound:Β 

    NEVER-SEEZ NSN, JET LUBE SS-30 or equivalentΒ 

  2. Install the rear oxygen sensor.

    Tightening torque:Β 

    21 N.m (2.1 kgf-m, 15.5 ft-lb)Β 

    Fig 1: Identifying Rear Oxygen Sensor (RH And LH)
    G08543974Courtesy of SUBARU OF AMERICA, INC.
  3. Install the front exhaust pipe. < Ref. to INSTALLATION , Front Exhaust Pipe. >
  4. Lower the vehicle.
  5. Connect the battery ground terminal.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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