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Home >> Subaru >> 2021 >> Crosstrek Sport >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 25 (Engine Control System (HEV) (Diagnostics) (4 Of 4)) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P2270: O2 Sensor Signal Biased/Stuck Lean Bank 1 Sensor 2 >> General Description >> Execution Condition

Execution Condition

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Secondary parameters Execution condition
Battery voltage 10.9 V or more
Sub feedback In operation
Amount of intake air 10g/s (0.35 oz/s) or more
Rear oxygen sensor element impedance 185Ω; or less
Enable conditions at interrupt control are as follows
Continuous time when rear oxygen sensor output voltage is less than 0.55V
4 s or more
Air fuel ratio reduced from target air fuel ratio Equal to Value of Map

Map

VOLTAGE SPECIFICATIONS - MAP

Output voltage of rear oxygen sensor (V) 0 0.15 0.2 0.4 0.6
Air fuel ratio reduced from target air fuel ratio (%) 10 10 4 4 4