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Subaru
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2016
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BRZ Series.HyperBlue
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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 (1 Of 3)
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DTC P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2)
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Enabling Conditions
Enabling Conditions
Overlap prohibited DTC
None
Battery voltage
10.9V or more
Amount of deceleration fuel cut is 5000 ms or more
Experienced
Estimated oxygen sensor element temperature
450°C (842°F) or more