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Home >> Subaru >> 2024 >> Crosstrek Wilderness >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2.5L) (Diagnostics) - Introduction >> Inspection Mode >> Procedure >> Inspection Mode Y

Inspection Mode Y

DTC Description & trouble part Condition Number of driving cycles on the detecting condition
P013B O2 SENSOR SLOW RESPONSE - LEAN TO RICH BANK 1 SENSOR 2 - 2
P013F O2 SENSOR DELAYED RESPONSE - LEAN TO RICH BANK 1 SENSOR 2 - 2
WARNING: When performing inspection mode Y on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.
NOTE: Perform the inspection mode after warming up the engine except that the engine coolant temperature at engine start is specified.
  1. Check that the battery voltage is 12 V or more and fuel remains approx. half [20 - 40 L (5.3 - 10.6 US gal, 4.4 - 8.8 Imp gal)].
  2. Using the Subaru Select Monitor, perform the clear memory of [Engine Control System]. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
  3. Drive according to the drive pattern described below.
    G16348862Courtesy of SUBARU OF AMERICA, INC.
    (1)  Vehicle speed 0 km/h (0 MPH) 
    (2)  Vehicle speed 60 km/h (37 MPH) 
    (3)  10 seconds 
    (A)  Start the engine  .
    (B)  Idle the engine for at least five minutes  .
    (C)  Accelerate the vehicle to 60 km/h (37 MPH)  .
    (D)  Drive the vehicle at a constant speed of 60 km/h (37 MPH)  .
    (E)  From the state where the vehicle speed is 60 km/h (37 MPH), change the accelerator opening angle to 0% to perform fuel cut for 10 seconds  .
    (F)  Accelerate the vehicle to 60 km/h (37 MPH)  .
    (G)  Drive the vehicle at a constant speed of 60 km/h (37 MPH)  .
    (H)  Slow down and stop the vehicle  .
    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.
  4. Read the pending code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .