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DTC P0441: EVAP System (CPC) Incorrect Purge Flow: Notes

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DTC detecting condition:

Detected when two consecutive driving cycles with fault occur.

Trouble symptom:

Improper idling

NOTE: After the faulty parts are repaired or replaced, perform the final check in Basic Diagnostic Procedure. Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Basic Diagnostic Procedure>PROCEDURE .

CHECK DTC .
1. Turn the ignition switch to ON.
2. Using the Subaru Select Monitor or a general scan tool, read the DTC of [Engine]. Ref. to COMMON (diag)>DIAGNOSTIC TROUBLE CODE (DTC) .
Is DTC other than P0441 displayed? (Current malfunction)

Yes : Check the appropriate DTC using the "Diagnostic Trouble Code (DTC)". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>Diagnostic Trouble Code (DTC)>LIST .

No : Go to 2.
CHECK PURGE CONTROL SOLENOID VALVE .
Select [CPC Solenoid Valve] in [Active Test] to operate the purge control solenoid valve using the Subaru Select Monitor.

NOTE: For detailed operation procedures, refer to the "Active Test". Ref. to ENGINE (DIAGNOSTICS) (H4DOTC)>ACTIVE TEST .

Does the purge control solenoid valve operate?

Yes : Go to 3.

No : Replace the purge control solenoid valve. Ref. to EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES) (H4DOTC)>PURGE CONTROL SOLENOID VALVE .
CHECK EVAPORATIVE EMISSION CONTROL SYSTEM LINE .
1. Turn the ignition switch to OFF.
2. Check the evaporative emission control system line. Ref. to FUEL INJECTION (FUEL SYSTEMS) (H4DOTC)>FUEL DELIVERY AND EVAPORATION LINES .
Are there holes, cracks, clogging, or disconnection, misconnection of hoses or pipes in evaporative emission control system?

Yes : Repair or replace the hoses or pipes.

No : Repair the poor contact of ECM connector.