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Home >> Subaru >> 2007 >> Outback XT Limited, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Diagnostic Trouble Code (DTC) Detecting Criteria (H4DOTC) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) >> Diagnostic Method

Diagnostic Method

Abnormality Judgment 

If the following conditions are met, judge as NG.

Judgment Value 

JUDGMENT VALUE

Malfunction Criteria Threshold Value
Maximum output voltage < 550 mV
Minimum output voltage > 150 mV

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

Malfunction Criteria Threshold Value
Maximum output voltage ≥ 550 mV
Minimum output voltage ≤ 150 mV