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Subaru
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2017
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Outback 3.6R Limited
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Repair and Diagnosis
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Engine Performance
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System
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Engine Control System (Diagnostics) (P2101 To U1712) (H6DO)
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Diagnostic Procedure with Diagnostic Trouble Code (DTC)
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DTC P2271: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2
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Execution Condition
Execution Condition
Secondary Parameters
Execution condition
Battery voltage
≥ 10.9 V
Fuel cut time
≥ 5000 ms
Estimated temperature of the rear oxygen sensor element
≥ 500 °C (932 °F)