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Home >> Subaru >> 2017 >> Legacy 2.5i Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Engine Control System (Diagnostics) (P000A To P015D) (H6DO)) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P013E: O2 Sensor Delayed Response - Rich To Lean Bank 1 Sensor 2 >> Diagnostic Method

Diagnostic Method

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Detect the trouble by calculating the time from the beginning of the fuel cut to the beginning of the rear oxygen sensor voltage starting to drop.

Fig 1: Rear Oxygen Sensor Voltage / Deceleration Graph
G11586599Courtesy of SUBARU OF AMERICA, INC.

Judge as NG when the following conditions are established.

JUDGMENT VALUE SPECIFICATION

Malfunction Criteria Threshold Value
Time when rear oxygen sensor voltage changed to 0.5 V after the fuel cut started > 4000 ms

Time Needed for Diagnosis:  5000 ms

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