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.

2021 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE

Execution Condition

Secondary parameters	Execution condition
Battery voltage Rear oxygen sensor voltage when fuel cut starts (Elapsed time of fuel cut Fuel shut-off function thereafter) Rear oxygen element impedance	10.9 V or more More than 0.55V More than 5000ms Not in operation 185ft or less

Chapter Navigation

Return to Chapter: DTC P013E: O2 Sensor Delayed Response - Rich To Lean Bank 1 Sensor 2

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:

• 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.