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Home >> Subaru >> 2017 >> WRX STI >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System (Diagnostics) (P0171 To P0685) (2.5L) >> 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 condition (Phase 1, Phase 2)  
Battery voltage ≥ 10.9 V
Barometric pressure ≥ 75.1 kPa (563 mmHg, 22.2 inHg)
Fuel level ≥ 9 L
Phase1  
Integrated purge air amount since engine starting ≥ 72 g
(Purge control duty ratio = 0%
for time) ≥ 1 s
Ambient air temperature > 4.4 °C (39.9 °F)
and
< 35 °C (95 °F)
Intake air amount per 1 second > Map
Commanded solenoid valve for secondary purge (High Pressure Purge Line) Open
MAP SPECIFICATION

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