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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 131 (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

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Minimum output voltage
or
> 0.15 V
Maximum output voltage < 0.55 V

Time Needed for Diagnosis:  200000 ms

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

Judge as OK and clear the NG if the following conditions are established.

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
Diagnosis of the rear oxygen sensor voltage low side Incomplete
Minimum output voltage ≤ 0.15 V
Maximum output voltage ≥ 0.55 V

Time Needed for Diagnosis:  Less than 1 second