LEMON Manuals
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Outback 2.5i Premium
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Repair and Diagnosis (Single Page)
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Engine Performance
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Engine Controls (H4DO) (Diagnostics) (4 Of 4)
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DTC P2271 O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2
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Execution Condition
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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)