DTC P1443 Vent Control Solenoid Valve Function Problem

DTC DETECTING CONDITION

Immediately at fault recognition
GENERAL DESCRIPTION < Ref. to DTC P1443 VENT CONTROL SOLENOID VALVE FUNCTION PROBLEM , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Improper fuel supply

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. > and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.

WIRING DIAGRAM:

Fig 1: Evaporative Emission Control System Vent Control Circuit - Wiring Diagram

DTC P1443 VENT CONTROL SOLENOID VALVE FUNCTION PROBLEM - DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FOR ANY OTHER DTC ON DISPLAY.	Is any other DTC displayed?	Check the appropriate DTC using the "List of Diagnostic Trouble Code (DTC)". < Ref. to LIST OF DIAGNOSTIC TROUBLE CODE (DTC) . >	Go to step 2 .
2 CHECK VENT LINE HOSES. Check the following items. Clogging of vent hoses between canister and drain valve Clogging of vent hose between drain valve and air filter Clogging of drain filter	Is there any fault in the vent line?	Repair or replace faulty parts.	Go to step 3 .
3 CHECK DRAIN VALVE OPERATION. Turn the ignition switch to OFF. Connect the test mode connector at the lower portion of instrument panel (on the driver's side). Turn the ignition switch to ON. Operate the drain valve. NOTE: Drain valve operation can be executed using Subaru Select Monitor. Regarding the procedures, refer to "Compulsory Valve Operation Check Mode". < Ref. to COMPULSORY VALVE OPERATION CHECK MODE . >	Does the drain valve operate?	Contact with SOA Service Center.	Replace the drain valve. < Ref. to DRAIN VALVE . >