DTC Summary

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No.	Monitoring Item	DTC Detection Condition	Trouble Area	Detection Timing	Detection Logic
P0441	EVAP VSV (Vacuum Switching Valve) stuck open	Vacuum pump creates negative pressure (vacuum) in EVAP system and EVAP system pressure measured. 0.02 inch leak pressure standard measured at start and at end of leak check. If stabilized pressure higher than [second 0.02 inch leak pressure standard x 0.2], ECM determines that EVAP VSV stuck open	EVAP VSV Connector/wire harness (EVAP VSV - ECM) ECM Pump module Leakage from EVAP system	While engine switch off	2 trip
P0441	EVAP VSV stuck closed	After EVAP leak check performed, EVAP VSV turned ON (open), and atmospheric air introduced into EVAP system. 0.02 inch leak pressure standard measured at start and at end of the check. If pressure does not return to near atmospheric pressure, ECM determines that purge valve stuck closed	EVAP VSV Connector/wire harness (EVAP VSV - ECM) ECM Pump module Leakage from EVAP system	While engine switch off	2 trip
P0441	Purge flow	While engine running, following conditions are successively met: Negative pressure not created in EVAP system when EVAP VSV turned ON (open) EVAP system pressure change less than 0.5 kPa (3.75 mmHg) when vent valve turned ON (closed) Atmospheric pressure change before and after purge flow monitor less than 0.1 kPa (0.75 mmHg)	EVAP VSV Connector/wire harness (EVAP VSV - ECM) Leakage from EVAP line (EVAP VSV - Intake manifold) ECM	While engine running	2 trip