LEMON Manuals
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Crosstrek Base
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Repair and Diagnosis (Single Page)
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Engine Performance
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System
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Engine Control System (Diagnostics) (P2101 To U0423) (H4DO)
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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
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Execution Condition
Secondary Parameters
Execution condition
Battery voltage
≥ 10.9 V
Time of fuel cut
≥ 5000 ms
Estimated temperature of the rear oxygen sensor element
≥ 500 °C (932 °F) (CVT model)
≥ 500 °C (932 °F) (MT model)