A/T
DTC P0440 - EVAPORATIVE EMISSION CONTROL SYSTEM MALFUNCTIONDTC DETECTING CONDITION:
- Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
- Gasoline smell
- There is a hole of more than 1.0 mm (0.04 in) dia. in evaporation system or fuel tank.
CAUTION: After repair or replacement of faulty parts, conduct CLEAR MEMORY MODE and INSPECTION MODE. Refer to How To Clear Diagnostic Trouble Codes.
Wiring Diagram:
WIRING DIAGRAM
11AG1: CHECK ANY OTHER DTC ON DISPLAY.
CHECK: Is there any other DTC on display?
YES: Inspect the relevant DTC using "11.Diagnostics Chart with Trouble Code for AT Vehicles".
NO: Go to step 11AG2.
11AG2: CHECK FUEL FILLER CAP
1. Turn ignition switch to OFF.
2. Check the fuel filler cap.
NOTE: The DTC code is stored in memory if fuel filler cap is or was loose or if the cap chain was caught while tightening.
CHECK: Is the fuel filler cap tightened securely?
YES: Go to step 11AG3.
NO: Tighten fuel filler cap securely.
11AG3: CHECK FUEL FILLER PIPE PACKING.
CHECK: Is there any damage to the seal between fuel filler cap and fuel filler pipe?
YES: Repair or replace fuel filler cap and fuel filler pipe.
NO: Go to step 11AG4.
11AG4: CHECK DRAIN VALVE.
1. Connect test mode connector.
2. Turn ignition switch to ON.
3. Operate drain valve.
NOTE: Drain valve operation can also be executed using Subaru Select Monitor. For the procedure, refer to "COMPULSORY VALVE OPERATION CHECK MODE".
CHECK: Does drain valve produce operating sound?
YES: Go to step 11AG5.
NO: Replace drain valve.
11AG5: CHECK PURGE CONTROL SOLENOID VALVE.
Operate purge control solenoid valve.
NOTE: Purge control solenoid valve operation can also be executed using Subaru Select Monitor. For the procedure, refer to "COMPULSORY VALVE OPERATION CHECK MODE".
CHECK: Does purge control solenoid valve produce operating sound?
YES: Go to step 11AG6.
NO: Replace purge control solenoid valve.
11AG6: CHECK PRESSURE CONTROL SOLENOID VALVE.
Operate pressure control solenoid valve.
NOTE: Pressure control solenoid valve operation can also be executed using Subaru Select Monitor. For the procedure, refer to "COMPULSORY VALVE OPERATION CHECK MODE".
CHECK: Does pressure control solenoid valve produce operating sound?
YES: Go to step 11AG7.
NO: Replace pressure control solenoid valve.
11AG7: CHECK EVAPORATIVE EMISSION CONTROL SYSTEM LINE.
Turn ignition switch to OFF.
CHECK: Is there a hole of more than 1.0 mm (0.04 in) dia. on fuel line?
YES: Repair or replace fuel line.
NO: Go to step 11AG8.
11AG8: CHECK CANISTER.
CHECK: Is canister damaged or is there a hole of more than 1.0 mm (0.04 in) dia. in it?
YES: Repair or replace canister.
NO: Go to step 11AG9.
11AG9: CHECK FUEL TANK.
Remove fuel tank.
CHECK: Is fuel tank damaged or is there a hole of more than 1.0 mm (0.04 in) dia. in it?
YES: Repair or replace fuel tank.
NO: Go to step 11AG10.
11AG10: CHECK ANY OTHER MECHANICAL TROUBLE IN EVAPORATIVE EMISSION CONTROL SYSTEM.
CHECK: Are there holes of more than 1.0 mm (0.04 in) dia., cracks, clogging or disconnections of hoses or pipes in evaporative emission control system?
YES: Repair or replace hoses or pipes.
NO: Contact with Subaru of America (SOA) service.
NOTE: Inspection by Subaru of America's DTM is required, because probable cause is deterioration of multiple parts.