DTC P0441: EVAP Purge Flow Monitor: Description

EVAP purge flow is monitored after engine warms to more than 170°F (77°C), fuel control in closed loop mode, after engine has been idling for 2 minutes, fuel level is not low, Manifold Absolute Pressure (MAP) less than 15.7 in. Hg and altitude less than 8000 feet. DTC will set when PCM senses no airflow through EVAP system after Leak Detection Pump (LDP) test has been passed. Possible causes are: EVAP purge solenoid leaks or is stuck, defective EVAP canister, defective EVAP purge solenoid or damaged or plugged vacuum hoses.