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, 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. Possible causes for DTC to set are: EVAP purge solenoid contaminated, defective EVAP purge solenoid or damaged or plugged vacuum hoses.