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Inspection Mode Y

DTC Item 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. Using the Subaru Select Monitor, clear the memory of [Engine Control System]. Ref. to COMMON (DIAG)>CLEAR MEMORY .
  2. Drive according to the drive pattern described below.
    G13202323Courtesy 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. 
  3. Read the temporary code using the Subaru Select Monitor or general scan tool. Ref. to COMMON (DIAG)>DIAGNOSTIC TROUBLE CODE (DTC) .