POSSIBLE CAUSE
• Purge solenoid valve malfunction
• Canister drain cut valve (CDCV) malfunction
• Loose, missing or defective fuel filler cap
• Charcoal canister malfunction
• Catch tank malfunction
• Check valve malfunction
• Rollover valve malfunction
• Cracked fuel tank
• Fuel tank component parts poorly installed
• EVAP hose damaged or loose
• Fuel tank pressure sensor malfunction