Concern 
 | Causes 
 | 
DEFINITION: Difficulty
when refueling the vehicle. 
 | 
Difficult to fill 
 | 
|     •  | The fuel filler pipe check valve is stuck closed. |  
  
|     •  | The fill limiter vent valve (FLVV) is stuck closed. |  
  
|     •  | The  evaporative emission (EVAP) canister drain hose is blocked or restricted. |  
  
|     •  | The EVAP canister drain line check ball is stuck closed. |  
  
|     •  | Any restricted vapor lines or hoses |  
  
|     •  | The EVAP canister is restricted. |  
  
|     •  | A fuel with high reid vapor pressure characteristics. |  
  
|     •  | A high fuel temperature |  
  
|     •  | The fuel filler hose/pipe is pinched, kinked, or blocked. |  
  
 | 
Over fill 
 | 
|     •  | The pressure relief valve in the fill limiter vent valve (FLVV) is stuck  open. |  
  
|     •  | The pressure relief valve in the FLVV is leaking. |  
  
|     •  | The FLVV is stuck open. |  
  
 | 
Pre-mature
shut-off of the fuel dispensing nozzle 
 | 
|     •  | The fill limiter vent valve (FLVV) is stuck closed. |  
  
|     •  | The  evaporative emission (EVAP) canister drain hose is blocked or restricted. |  
  
|     •  | The EVAP canister drain line check ball is stuck closed. |  
  
|     •  | Any restricted vapor lines or hoses |  
  
|     •  | The EVAP canister is restricted. |  
  
|     •  | A fuel with high reid vapor pressure characteristics |  
  
|     •  | A high fuel temperature |  
  
 | 
Fuel spitback 
 | 
|     •  | The fuel filler pipe check valve is stuck open. |  
  
|     •  | The filler pipe check valve is stuck closed. |  
  
|     •  | The filler pipe check valve is leaking. |  
  
|     •  | A fuel with high reid vapor pressure characteristics. |  
  
|     •  | A high fuel temperature |  
  
 | 
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 (FLVV) is stuck  open. |  
  
|     •  | The pressure relief valve in the FLVV is leaking. |  
  
|     •  | The fuel filler hose is loose or torn. |  
  
|     •  | The FLVV is stuck open. |  
  
 | 
Fuel
odor 
 | 
|     •  | The pressure relief valve in the fuel limiter vent valve (FLVV) is stuck  open. |  
  
|     •  | The pressure relief valve in the FLVV is leaking. |  
  
|     •  | The EVAP canister is saturated with fuel. |  
  
 |