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Home >> Subaru >> 2017 >> Forester 2.0XT Touring >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control System (Diagnostics) (P000A To P015B) (H4DOTC) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P0134 A/F/O2 Sensor Circuit No Activity Detected Bank 1 Sensor 1 >> Outline Of Diagnosis

Outline Of Diagnosis

Detect open circuits of the sensor.

Judge as NG when the element voltage is out of range, or the element current is stuck.