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Home >> Subaru >> 2018 >> Forester 2.5i, Automatic CVT Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) (H4DO) >> Drive Cycle >> Procedure >> Drive Cycle Y
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Drive Cycle Y

DTC Item Condition Number of driving cycles on the detecting condition
P013F O2 SENSOR DELAYED RESPONSE - LEAN TO RICH BANK 1 SENSOR 2 - 2
WARNING: When performing drive cycle Y on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.

Diagnostic procedure: 

  1. Drive according to the drive pattern described below.
    G12519056Courtesy of SUBARU OF AMERICA, INC.
    NOTE:
    • the condition of acceleration or constant driving can be changed according to different traffic conditions.
    • If diagnostic values have not been input after driving, repeat the cycle from step (C) without stopping the engine.
    • Cruise control should not be used.
  2. Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to ENGINE (DIAGNOSTICS) (H4DO)>Read Diagnostic Trouble Code (DTC)>OPERATION .