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Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Control System (Diagnostics) (STI) (4 Of 4)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P2271: O2 Sensor Signal Biased/Stuck Rich Bank 1 Sensor 2 >> Execution Condition

Execution Condition

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Secondary parameters Execution condition
Battery voltage ≥ 10.9 V
Time of fuel shut-off operation ≥5000 ms
Estimated temperature of the rear oxygen sensor element ≥500°C (932°F)