What Does Check Fuel Fill Inlet Message Mean?

By | January 13, 2022

What Does Check Fuel Fill Inlet Mean
If you have a dashboard message saying Check Fuel Fill Inlet, the vehicle sees a problem with the no gas cap system.

This is a common problem for Ford vehicles, including the F150, Mustangs, or any Ford Capless Fuel System.

The No Cap system was created to eliminate the gas cap and make filing gas easier by simply inserting the nozzle.
Ford Capless Fuel System
While a nice innovation, it has caused some issues, mainly with the Check Fuel Fill Inlet message.

What Does Check Fuel Fill Inlet Message Mean?
What Does Check Fuel Fill Inlet Message Mean
The Check Fuel Fill Inlet message means the onboard computer (ECM) sees the door on the gas inlet as open.

Many new Ford vehicles use a no gas cap inlet that uses a spring-loaded latch to automatically close.

When the latch does not close completely, the message will be given.

Possible Causes

  • Debris or Grim on Inlet
  • Bad Seal
  • Locking filler plug
  • Evap Leak
  • Faulty Sensor

How To Fix Check Fuel Fill Inlet Message
How To Fix Check Fuel Fill Inlet Message 2
Fixing the error is usually done by cleaning the surface around the gas inlet latch with cleaner, compressed air, and the small tube that comes with the vehicle.

The small tube is usually located in the trunk with the spare tire.

The latch and inlet can be cleaned with a rag wiping away any debris that may be blocking the inlet from closing all the way.
How To Fix Check Fuel Fill Inlet Message

Compressed air can also be used to blow out any small debris.
How To Fix Check Fuel Fill Inlet Message Compressed Air

Using the funnel, the small door latch can be open and shut to help clear out anything that may be blocking it from closing all the way.
How To Fix Check Fuel Fill Inlet Message Funnel
Once the inlet is cleaned of any debris, the message should clear. Sometimes the vehicle needs to be driven 5-10 miles before the message will clear.

Check Fuel Fill Inlet Message Will Not Clear After Cleaning Inlet
If the message does not clear after cleaning the inlet, there may be a problem with the Evap system.

The Evap system prevents fuel vapors from escaping into the atmosphere.

The gas tank is sealed, so no vapors are vented but are fed back into the engine to be burned away.

This includes the purge valve or a Leak In Evap system.

The inlet sensor can also go bad and need to be replaced.

In some cases, the fuel filler tube needs to be replaced.

Summary
If you get a Check Fuel Fill Inlet message, it can usually be cleared by cleaning away any dirt or debris from the gas inlet.

Using a combination of compressed air, cleaner, and a rag, the inlet can be cleaned and the inlet latch closed.

After cleaning the inlet, the message will usually go away, but in some cases, the vehicle needs to be driven for 5-10 miles before it clears.

If the message does not clear, there might be a problem with the Evap system, or the sensor on the inlet may have gone bad.

Most cars and trucks will still run well but will not pass an emission test until the error is cleared.

Have you had issues with a Check Fuel Fill Inlet message? Let us know your thoughts below.

 




 

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