DTC Summary

DTC TROUBLE DETECTION CONDITION CHART

DTCs	Monitoring Item	Malfunction Detection Condition	Trouble Area	Detection Timing	Detection Logic
P0441	Purge VSV (Vacuum Switching Valve) stuck open	Vacuum pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure is measured. 0.02 inch leak pressure standard is measured at start and end of leak check. If stabilized pressure is higher than [second 0.02 inch leak pressure standard x 0.2], ECM determines that purge VSV is stuck open	Purge VSV Purge VSV circuit (between purge VSV and ECM) Leakage from EVAP line (between purge VSV and intake manifold) EVAP line clogged (between purge VSV and canister) ECM	While ignition switch OFF	2 trip
P0441	Purge VSV stuck closed	After EVAP leak check performed, purge VSV turned ON (open), and atmospheric air is introduced into EVAP system. 0.02 inch leak pressure standard is measured at the start and end of leak check. If pressure does not return to near atmospheric pressure, ECM determines that purge valve is stuck closed	Purge VSV Purge VSV circuit (between purge VSV and ECM) Leakage from EVAP line (between purge VSV and intake manifold) EVAP line clogged (between purge VSV and canister) ECM	While ignition switch OFF	2 trip
P0441	Purge flow	While engine running, the following conditions are successively met: Negative pressure is not created in EVAP system when purge VSV is turned ON (open) EVAP system pressure change is less than 0.5 kPa (3.75 mmHg) when vent valve is turned ON (closed) Atmospheric pressure change before and after purge flow monitor is less than 0.1 kPa (0.75 mmHg)	Purge VSV Purge VSV circuit (between purge VSV and ECM) Leakage from EVAP line (between purge VSV and intake manifold) EVAP line clogged (between purge VSV and canister) ECM	While ignition switch OFF	2 trip