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Home >> Subaru >> 2017 >> WRX Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (Diagnostics - Introduction) (2.0L) >> Drive Cycle >> Procedure >> Drive Cycle P
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Drive Cycle P

DTC Item Condition
P04F0 Evap System High Pressure Purge Line (CPC2) Performance Remaining fuel level 20 L or more

Diagnostic procedure: 

WARNING: When performing drive cycle P on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.
  1. Drive according to the drive pattern described below.
    Fig 1: Vehicle Speed Drive Cycle P
    G11577032Courtesy of SUBARU OF AMERICA, INC.
  2. Park the vehicle on a safe place.
    NOTE: Driving method while vehicle is driven to a stop at safe place is not restricted.
  3. With the vehicle idling, read the temporary diagnostic code of DTC using Subaru Select Monitor or general scan tool.
NOTE:
  • For detailed operation procedures, refer to "Read Diagnostic Trouble Code (DTC)". <Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .>
  • In the step  3, if the DTC is not displayed on the Subaru Select Monitor or general scan tool display screen, the trouble is resolved.