DTC Detecting Condition and Trouble Area

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

DTC detecting condition	Trouble area
P0449: Evaporative Emission System Vent Valve/Solenoid Circuit This DTC is detected if any one of the following conditions is met. Output voltage of EVAP vent valve drive circuit is lower than 3 V for 5 sec. when vent valve is OFF (OPEN). Electric current of EVAP vent valve drive circuit is higher than 1.5 A for 5 sec. even if vent valve is ON (CLOSE). (2 D/C detection logic)	EVAP vent valve and/or its circuit ECM