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Home >> Subaru >> 2013 >> Legacy Base, Automatic CVT Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 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 2
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Diagnostic Method 2

Detect the malfunction by calculating the average amplitude of l.

Fig 1: Sensor Output Graph (Diagnostic Method 2)
G08540817Courtesy of SUBARU OF AMERICA, INC.

Judge as NG when the following conditions are established.

JUDGMENT VALUE

Malfunction Criteria Threshold Value DTC
Average value for λ amplitude > 0.07 (AT model)
> 0.1 (MT model)
P015A and P015B

Time Needed for Diagnosis:  11250 time(s) x 8 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

Malfunction Criteria Threshold Value DTC
Average value for λ amplitude ≤ 0.07 (AT model)
≤ 0.1 (MT model)
P015A and P015B

Time Needed for Diagnosis:  11250 time(s) x 8 ms