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Home >> Subaru >> 2006 >> Outback R >> Repair and Diagnosis (Single Page) >> Engine Performance >> Testing & Diagnosis >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) >> Diagnostic Method

Diagnostic Method

Abnormality Judgment 

When one of the following conditions is established, judged as NG.

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Maximum output voltage low side diagnosis < 0.55 V
Minimum output voltage high side diagnosis > 0.25 V

Time Needed for Diagnosis:  200 seconds

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

Normality Judgment 

When the following conditions are established, judged as OK.

Judgment Value 

JUDGMENT VALUE CHART

Malfunction Criteria Threshold Value
Maximum output voltage low side diagnosis ≥ 0.55 V
Minimum output voltage high side diagnosis ≤ 0.25 V