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Home >> Subaru >> 2015 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) (Except STI) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2271 O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 2) >> Enable Conditions

Enable Conditions

ENABLE CONDITIONS

Secondary Parameters Enable Conditions
Battery voltage ≥ 10.9 V
Deceleration fuel cut of 5000 ms or more Experienced
Estimated temperature of the rear oxygen sensor element ≥ 450°C (842°F)