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Home >> Subaru >> 2020 >> Crosstrek Base, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 26 (Engine Control System (Diagnostics) (HEV) (1 Of 4)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P015A: A/F/O2 Sensor Delayed Response - Rich To Lean Bank 1 Sensor 1 >> Diagnosis 2

Diagnosis 2

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Detect the malfunction by calculating the average amplitude of λ.

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Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value DTC
Average value for λ amplitude More than 0.1 P015A and P015B

Time needed for diagnosis:  8 ms x 2500time(s)

Malfunction indicator light illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.