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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P015A O2 Sensor Delayed Response - Rich To Lean (Bank 1 Sensor 1) >> Diagnostic Method 1 >> Abnormality Judgment

Abnormality Judgment

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.

Judge as NG when the following conditions are established.

Judgment Value 

Malfunction Criteria Threshold Value DTC
Average value of time necessary for λ to inverse the air fuel ratio to Lean → Rich → Lean. > 500 ms P015A
Average value of time necessary for λ to inverse the air fuel ratio to Rich → Lean → Rich. > 400 ms P015B

Time Needed for Diagnosis:  50 times of inversion

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

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