P0441

DTC PO441
EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW (CPC-F)





Description
- The evaporative emission control system is employed to prevent evaporative fuel from being discharged into ambient atmosphere. This system includes a canister, purge control solenoid valve, fuel cut valve, their connecting lines, etc.
- Gasoline vapor evaporated from the fuel tank is introduced into the canister located in the engine compartment through the evaporation line, and is absorbed on activated carbon in it. A fuel cut valve is also incorporated on the tank fuel line.
- The purge control solenoid valve is controlled by the Engine Control Module (ECM) and provides optimal purge control according to the engine coolant temperature, Engine load and vehicle speed.





- The purge control solenoid valve is on the evaporation line between canister and throttle body. It is built on the below of intake manifold.

DTC Detecting Condition
Two consecutive trips with fault.











1. check transmission type.
- Refer to flow chart.

2. Check any other DTC's, P0105, PO1O6, PO443 and P1102 on display.
[CHECK]: Check that Subaru Select Monitor or the OBD-II General Scan Tool shows P0105, P0106, P0443 and P1102.
[YES]: Inspect the relevant DTC using the diagnostics chart with trouble code.
[NO]: Go to step 3.

3. Check Purge Control Solenoid Valve Operation.
a. Turn Ignition Switch to "OFF".
b. Connect test mode connector at the lower portion of instrument panel (on the driver's side), to the side of the center console box.
c. Turn ignition switch to "ON".
[CHECK]: Make sure that the "ON"/"OFF"operating sound of purge control solenoid valve occurs at about 0.3 Hz.
[NO]: Replace purge control solenoid valve.
[YES]: Go to next step.

d. Disconnect Canister purge hose from canister.
[CHECK]: Blow through the canister purge hose to check if pulsations occur.
[YES]: Check and repair loose connections, cracks, and clogging in evaporation line.
[NO]: Replace purge control solenoid valve.