Skip the auto shop - Our mechanics make house calls

Q: What does the “Check fuel fill inlet” warning mean in the message center?

asked by on

What does the “Check fuel fill inlet” warning mean in the message center?

A: The “check fuel fill inlet” warning is an i...

The “check fuel fill inlet” warning is an indication of an issue with the fuel cap, which covers the fuel fill inlet. Fuel caps are a vital part of the evaporative emissions (EVAP) system. If the fuel cap is damaged, or not affixed to the fuel fill inlet properly, this may lead to fuel leaks, decreased gas mileage, and/or more serious issues with the evaporative emissions (EVAP) system.

  • When the fuel cap is affixed securely to the fuel fill inlet, this creates a vacuum pressure seal. The vacuum pressure seal enables pressurized fuel to flow through the fuel system.

  • When the fuel fill inlet is sealed properly by the fuel cap, harmful pollutants and fumes are sealed inside the fuel tank. This is an important part of the evaporative emissions (EVAP) system, and doing so prevents these harmful pollutants and fumes from being emitted into the environment.

  • The fuel cap protects the composition of the fuel tank when it is secured to the fuel fill inlet properly. This prevents outside contaminants from being able to enter into the fuel tank through the fuel fill inlet.

The “check fuel fill inlet” warning may be an indication of the following:

  • The fuel cap is missing
  • The fuel cap is loose
  • The fuel cap is damaged
  • The fuel cap is screwed on too tightly
  • There is debris in the fuel fill inlet
  • There is a vacuum pressure leak
Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Won't start - not getting fuel into the injectors

Hey there, thanks for writing in. Lack of fuel pressure here often points out a clogged fuel filter. I would have an experienced technician inspect the fuel system and check pressure at the fuel feed line under the hood. The...

Q: Ran car empty the other day, so I stopped at Wal-Mart for gas, car shut off 2014 VW Passat

Hello - it is possible that you were close to being completely out of gas when you first stopped for fuel. The fuel lines may have had some air in them, and your initial startup attempt (at Walmart) did not...

Q: Car takes multiple tries to start when cold. Fine when warm. New battery. DLR says check valve on fuel pump assembly. Needs entire assembly?

The fuel pump has a small check valve the is suppose to keep fuel pressure up to the fuel injectors after you shut off the engine. The check valve is an integral part of the fuel pump assembly. The way...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...