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.

SYS.OK|MANUAL.DB● LIVE

HOMESERVICE MANUALSSUBARU2014FORESTER 2.5I, ENG CD FB25BA, STANDARD TRANSREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 3 (FUEL INJECTION FUEL SYSTEMS (H4DOTC))REAR OXYGEN SENSORINSPECTION

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard Trans

Rear Oxygen Sensor: Inspection

2014 Subaru Forester 2.5i, Eng CD FB25BA, Standard TransSECTION Inspection

WARNING: This page is about a different variant/trim than selected.

Check that the rear oxygen sensor has no deformation, cracks or other damages.

Measure the resistance between rear oxygen sensor terminals.

Fig 1: Measuring Resistance Between Rear Oxygen Sensor Terminals

Courtesy of SUBARU OF AMERICA, INC.

Terminal No.	Standard
1 and 2	Approx. 5.6 Ω (when 20°C (68°F))

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready Tools Free Quote Check Quote Shield Pro

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.