Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Subaru Outback LimitedFACTORY OEM SERVICE PROCEDURE
Rear Oxygen Sensor: Removal
- Disconnect the ground cable from battery.
- Remove the air intake duct. Refer to AIR INTAKE DUCT .
- Disconnect the rear oxygen sensor connector, and remove the clip holding the rear oxygen sensor harness.
- Lift up the vehicle.
- Remove the under cover. Refer to FRONT UNDER COVER .
- Apply spray-type lubricant to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
- Remove the rear oxygen sensor.
CAUTION:
When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.