Diagnostic Procedure

WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FUEL FILLER CAP. Turn the ignition switch to OFF. Check the fuel filler cap. NOTE: The DTC is stored in memory if fuel filler cap is or was loose or if the cap chain has caught while tightening.	Is the fuel filler cap tightened securely?	Go to step 2.	Tighten fuel filler cap securely.
2 CHECK FUEL FILLER CAP.	Is the fuel filler cap genuine?	Go to step 3.	Replace with a genuine fuel filler cap.
3 CHECK FUEL FILLER PIPE GASKET.	Is there any damage to the seal between fuel filler cap and fuel filler pipe?	Repair or replace the fuel filler cap and fuel filler pipe. < Refer to FUEL FILLER PIPE . >	Go to step 4.
4 CHECK PURGE CONTROL SOLENOID VALVE. Check air-tightness of the purge control solenoid valve. < Refer to INSPECTION , Purge Control Solenoid Valve. >	Is the purge control solenoid valve OK?	Go to step 5.	Replace the purge control solenoid valve. < Refer to PURGE CONTROL SOLENOID VALVE . >
5 CHECK EVAPORATIVE EMISSION CONTROL SYSTEM LINE.	Are there holes on the evaporation line?	Repair or replace the evaporation line. < Refer to FUEL DELIVERY, RETURN AND EVAPORATION LINES . >	Go to step 6.
6 CHECK CANISTER.	Are there holes on the canister?	Replace the canister. < Refer to CANISTER . >	Go to step 7.
7 CHECK LEAK CHECK VALVE ASSEMBLY.	Are there damage or holes on the leak check valve assembly?	Replace the leak check valve assembly. < Refer to LEAK CHECK VALVE ASSEMBLY . >	Go to step 8.
8 CHECK FUEL TANK. Remove the fuel tank. < Refer to FUEL TANK . >	Are there damage or holes on the fuel tank?	Repair or replace the fuel tank. < Refer to FUEL TANK . >	Go to step 9.
9 CHECK ANY OTHER MECHANICAL TROUBLE IN EVAPORATIVE EMISSION CONTROL SYSTEM.	Are there holes, cracks, clogging, or disconnection, misconnection of hoses or pipes in evaporative emission control system?	Repair or replace the hoses or pipes.	Repair the poor contact of ECM connector.