Concern 
 | Causes 
 | 
DEFINITION: Difficulty in refueling the vehicle
when equipped with an ORVR fuel system. 
 | 
Difficult to fill 
 | 
|     •  | The check valve is stuck closed. |  
  
|     •  | The fill limiter vent valve is stuck closed. |  
  
|     •  | The evaporative emission (EVAP) canister is restricted. |  
  
|     •  | The EVAP-canister vent solenoid is stuck closed. |  
  
|     •  | Fuel with high Reid Vapor Pressure characteristics |  
  
|     •  | The fuel filler hose or the pipe is pinched, is kinked, or is
blocked. |  
  
 | 
Over-fill 
 | 
|     •  | The pressure relief valve in the fill limiter vent valve is stuck
open. |  
  
|     •  | The pressure relief valve in the fill limiter vent valve is leaking. |  
  
|     •  | The fill limiter vent valve is stuck open. |  
  
|     •  | The fill limiter vent valve is leaking. |  
  
 | 
Premature shut-off of the fuel-dispensing nozzle 
 | 
|     •  | The fill limiter vent valve is stuck closed. |  
  
|     •  | A restricted EVAP canister |  
  
|     •  | A stuck-closed EVAP-canister vent solenoid. |  
  
|     •  | Restricted fuel vapor lines |  
  
|     •  | Fuel with high Reid Vapor Pressure characteristics |  
  
 | 
Fuel Backflow 
 | 
|     •  | The check valve is stuck open. |  
  
|     •  | The check valve is stuck closed. |  
  
|     •  | The check valve is leaking. |  
  
|     •  | Fuel with high Reid Vapor Pressure characteristics |  
  
 | 
Liquid fuel in the EVAP canister. 
 | 
|     •  | The fill limiter vent valve is stuck open. |  
  
|     •  | The fill limiter vent valve is leaking. |  
  
 | 
Liquid fuel leak 
 | 
|     •  | The pressure relief valve in the fill limiter vent valve is stuck
open. |  
  
|     •  | The pressure relief valve in the fill limiter vent valve is leaking. |  
  
|     •  | A torn fuel filler hose or a loose fuel filler hose |  
  
|     •  | The fill limiter vent valve is stuck open. |  
  
 | 
Fuel Odor 
 | 
|     •  | Pressure relief in the fuel limiter vent valve stuck open. |  
  
|     •  | The pressure relief valve in the fill limiter vent valve is leaking. |  
  
|     •  | A fuel-saturated EVAP canister |  
  
 |