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Home >> Subaru >> 2017 >> Crosstrek Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P2101 To U0423) (H4DO) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> 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 ≥ 8 g/s (0.28 oz/s)
Estimated temperature of the rear oxygen sensor element ≥ 500 °C (932 °F) (CVT model)
≥ 500 °C (932 °F) (MT model)
Enable conditions at interrupt control are as follows  
Continuous time when rear oxygen sensor output voltage is less than 0.55 V ≥ 5 s (CVT model)
≥ 15 s (MT model)
Air fuel ratio reduced from target air fuel ratio = Value of Map
MAP (CVT MODEL) VALUE SPECIFICATION

Output voltage of rear oxygen sensor
V
0.000 0.150 0.200 0.400 0.600
Air fuel ratio reduced from target air fuel ratio
%
15 15 4 4 4
MAP (MT MODEL) VALUE SPECIFICATION

Output voltage of rear oxygen sensor
V
0.000 0.150 0.200 0.400 0.600
Air fuel ratio reduced from target air fuel ratio % 15 15 4 4 4