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Home >> Subaru >> 2019 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (STI) (2 Of 4) >> Diagnostic Procedure with Diagnostic Trouble Code (DTC) >> DTC P04F0: EVAP System High Pressure Purge Line (CPC2) Performance >> Execution Condition

Execution Condition

Secondary parameters Execution condition
<Phasel>  
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Integrated purge air amount since engine starting ≥ 72 g (2.54 oz)(1)
Purge control duty ratio = 0% duration time ≥ 1000 ms
Ambient air temperature >4.4°C (39.9°F) and
< 35°C (95°F)
Fuel level ≥ 9L (2.38US gal, 1.98Imp gal)
Cumulative time for establishment of the following conditions ≥ 6016 ms
 
  • Intake air amount per 1 second
>Map
 
  • Commanded solenoid valve for secondary purge

<Phase2>
Open
Establishing time for following conditions ≥ 20 s
 
  • Battery voltage
≥ 10.9 V
 
  • Barometric pressure
≥ 75.1 kPa (563 mmHg, 22.2 inHg)
 
  • Fuel level
≥ 9L (2.38US gal, 1.98Imp gal)
(1) It is approximately 2 sec per the integration of purge to reach 1g at vehicle speed of 40 MPH.
FUEL LEVEL DESCRIPTION - MAP

Fuel level (L (US gal)) 0 (0) 10 (2.64) 20 (5.28) 30 (7.93) 40 (10.57) 50 (13.21) 60 (15.85)
Intake air amount per 1 second (g/s) 80 80 60 60 60 60 60