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Home >> Subaru >> 2018 >> WRX Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (2 Of 4) (Except For STI) >> 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
Common conditions
<Phase1>
Battery voltage = 10.9 V
Barometric pressure = 75.06 kPa (563 mmHg, 22.2 inHg)
Integrated purge air amount since engine starting = 72 g (2.54 oz)*
Purge control duty ratio = 0% duration time = 1 s
Ambient air temperature > 4.4°C (39.9°F)
and
< 35°C (95°F)
Intake air amount per 1 second > Map
Second purge valve control Open
<Phase2>
Battery voltage = 10.9 V
Barometric pressure = 75.06 kPa (563.1 mmHg, 22.2 inHg)
Fuel level = 9L

* It is approximately 2 sec per the integration of purge to reach 1g at vehicle speed of 40 MPH.

FUEL LEVEL SPECIFICATION - MAP

Fuel level
(L (US gal))
9
(2.64)
10
(5.26)
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