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Home >> Subaru >> 2014 >> Impreza Base, 4D Sedan >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnostic Trouble Code (DTC) Detecting Criteria (Except Hybrid) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0140: O2 Sensor Circuit No Activity Detected (Bank1 Sensor2) >> Enable Condition (Used Only For Malfunction Judgment)

Enable Condition (Used Only For Malfunction Judgment)

Secondary Parameters Enable Conditions
Closed loop control at the rear oxygen sensor In operation
Target output voltage of rear oxygen sensor ≥ 0.55 V + 0.05 V
Amount of intake air ≥ 10 g/s (0.35 oz/s)
Engine coolant temperature ≥ -40 °C (-40 °F)
Misfire detection every 200 rotations < 65535 time(s)
Front oxygen (A/F) sensor compensation coefficient Not in limit value
Battery voltage ≥ 10.9 V
Deceleration fuel cut of 5000 ms or more. Experienced