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Home >> Subaru >> 2019 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (Except For STI) (1 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P0140: O2 Sensor Circuit No Activity Detected Bank 1 Sensor 2 >> Execution Condition

Execution Condition

Secondary parameters Execution condition
12 V battery system voltage ≥ 10.9 V
Estimated secondary oxygen sensor element temperature ≥ 450°C (842°F)
Integrated duty ratio of the secondary oxygen sensor heater operation from engine start ≥ 54400%
Secondary oxygen sensor offset signal ≥ 1.8 V and ≤ 2.2 V