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Home >> Subaru >> 2016 >> WRX STI Series.HyperBlue >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P2270 O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 >> Execution Condition
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Execution Condition

Secondary Parameters Execution condition
Battery voltage ≥ 10.9 V
Sub feedback In operation
Amount of intake air ≥ 10 g/s (0.35 oz/s)
Estimated temperature of the rear oxygen sensor element ≥ 500 °C (932 °F)
Enable conditions at interrupt control are as follows  
Air fuel ratio reduced from target air fuel ratio = Value of Map
Continuous time when rear oxygen sensor output voltage is less than 0.55 V ≥15000 ms
MAP VALUE SPECIFICATION

Output voltage of rear oxygen sensor V 0.000 0.100 0.200 0.400 0.600
Air fuel ratio reduced from target air fuel ratio % -0.15X100 -0.15 X 100 -0.04 X 100 -0.04 X 100 -0.04 X 100