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Home >> Subaru >> 2019 >> Ascent Premium >> 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 >> Outline Of Diagnosis
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Outline Of Diagnosis

Detect the open circuit in the rear oxygen sensor.