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Home >> Subaru >> 2020 >> Forester Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (1 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0140: O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2 >> Execution Condition
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Execution Condition

Secondary parameters Execution condition
Battery voltage 10.9 V or more
Estimated temperature of the rear oxygen sensor element 500°C (932°F) or more
Cumulative duty ratio of the rear oxygen sensor heater after engine starting 11800% or more
Rear oxygen sensor offset signal (A) 1.8V - 2.2V