DTC P0441: EVAP Purge Flow Monitor: Description

EVAP purge flow is monitored after engine warms up to more than 170°F (76.7°C) in closed loop mode, at idle for 2 minutes, fuel level is not low, Manifold Absolute Pressure (MAP) at less than 15.7 in. Hg, and altitude at less than 8000 feet. DTC will set in Powertrain Control Module (PCM) memory when PCM senses no airflow through Evaporative Emission (EVAP) system after Leak Detection Pump (LDP) test has been passed. Possible causes are: EVAP purge solenoid leaks or is stuck open or closed, defective EVAP canister, defective EVAP purge solenoid or damaged or plugged vacuum hoses.