DTC P04F0 - EVAP System High Load Purge Line A Performance

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DTC DESCRIPTION P04F0 - EVAP SYSTEM HIGH LOAD PURGE LINE A PERFORMANCE

Description:	The EVAP check valve test is performed during minimal boost conditions, once per drive cycle, when entry conditions are met. This DTC sets when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (single path check valve), or when the fuel tank vacuum is less than a calibrated amount within a specified amount of time or when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (dual path check valve).
Possible Causes:	Incorrect EVAP system hose or line connections Restricted EVAP ejector connections at the intake air system Stuck open EVAP check valve Stuck closed EVAP check valve Damaged EVAP ejector Damaged EVAP check valve
Diagnostic Aids:
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST HX .