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?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. What does the “Check fuel fill inlet” warning mean in the message center?

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: Where is the fuel pump cut off switch?

The fuel pump cut off switch is located behind the lower passenger scuff panel under the dash by the A-pillar. If you need further assistance with fuel cut off switch, then seek out a professional, such as one from Your...

Q: I have to push the accelerator when I crank up my truck up to keep it from turning off

Depending on the engine maintenance that has been done on a regular basis you may need to have a diagnostic check done to check the condition of the ignition system, fuel system, and the computer sensors for an issue like...

Q: the check engine light appears and it gives us the code P0170

The P0170 trouble code does not necessarily go with your vehicle, but it indicates fuel control problems. I recommend the following: Have the fuel pressure tested to see if it is too low or high. Make sure...

Related articles

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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.