LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics) (2.0L) - Introduction >> Drive Cycle >> Procedure >> Drive Cycle S
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Drive Cycle S

DTC Item Condition Number of driving cycles on the detecting condition
P0246 TURBOCHARGER/SUPERCHARGER WASTEGATE SOLENOID "A" HIGH - 1
P04AD EVAP SYSTEM (CPC) PURGE CONTROL VALVE "B" CIRCUIT HIGH - 2
P0851 PARK/NEUTRAL SWITCH INPUT CIRCUIT LOW MT model 2
P0852 PARK/NEUTRAL SWITCH INPUT CIRCUIT HIGH MT model 2
WARNING: When performing the drive cycle S on the public road, be very careful of the traffic condition and the safe driving must be the high priority.
  1. Using the Subaru Select Monitor, perform the clear memory for «Engine». Refer to ENGINE (DIAGNOSTICS) (W/O STI)>CLEAR MEMORY MODE>OPERATION .
  2. Drive three times according to the drive pattern described below.
    G13650441Courtesy of SUBARU OF AMERICA, INC.
  3. Read the temporary code using the Subaru Select Monitor or general scan tool. Refer to ENGINE (DIAGNOSTICS) (W/O STI)>READ DIAGNOSTIC TROUBLE CODE (DTC)>OPERATION .