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Home >> Subaru >> 2006 >> Legacy GT spec.B >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Diagnostic Trouble Code (DTC) Detecting Criteria (H6DO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor2) >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different car, the 2006 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.

Judge as NG when the malfunction criteria below are met.

Judgment Value 

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Minimum output voltage > 250 mV
Maximum output voltage < 500 mV

Time Needed for Diagnosis:  200 seconds

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

Judge as OK when the criteria below are met.

Judgment Value 

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Diagnosis of the rear oxygen sensor voltage low side Incomplete
Minimum output voltage ≤ 50 mV
Maximum output voltage ≥ 500 mV