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Home >> Subaru >> 2015 >> WRX Limited, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (STI)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2) >> Enable Conditions

Enable Conditions

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ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Deceleration fuel cut for 5000 ms or more. Experienced
Estimated temperature of the rear oxygen sensor element ≥ 500 °C (932 °F)