Code P1440 Possible Causes
Leak is in line between intake manifold and EVAP canister purge volume control solenoid valve
Loose or disconnected rubber tube
O-ring of EVAP canister vent control valve is missing or damaged
EVAP canister or fuel tank leaks
EVAP system hose leaking
Foreign matter caught in fuel filler cap
Fuel filler cap remains open or fails to close

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