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Discussion Starter · #1 ·
Hello everyone, I just got the check engine light on my 2018 Ford Fusion Hybrid code read, and it says "the refueling vapor control valve stuck closed", researching about the issue all the information I find mentions the "purge valve", anybody knows if those two are the same thing? Thank you..
 

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Welcome to the FFO!

Would you post the code?
And home many miles on your vehicle?

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Welcome to the Forum
#17 is your purge valve 21 is your Pcv vale 22 is the Pcv O ring
49383
 

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I can't copy the entire system
But you have a great number of plastic lines that could be leaking
 

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When I searched for a P04B4 code I found it is a power train code.
Symptoms of a P04B4 diagnostic trouble code may include:
  • Rich or lean exhaust
  • Fuel pressure too low
  • Engine surge
  • Diminished fuel efficiency
Possible Causes :
  • The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
  • Defective ECU strategies or components will prevent proper regeneration
  • Faulty IMRC actuator relay (if equipped)
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Discussion Starter · #11 ·
When I searched for a P04B4 code I found it is a power train code.
Symptoms of a P04B4 diagnostic trouble code may include:
  • Rich or lean exhaust
  • Fuel pressure too low
  • Engine surge
  • Diminished fuel efficiency
Possible Causes :
  • The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
  • Defective ECU strategies or components will prevent proper regeneration
  • Faulty IMRC actuator relay (if equipped)
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The thing is the car is not having any problems, the power hasn't changed, fuel economy is still excellent, it is just the light and it happened right after a fill up, and by the way during that fill up the pump kept cutting off without the tank reaching full yet..
 

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Disregard my post above. ...............................

The issue is a valve in the tank or near the tank is supposed to open and allow air to exit during refueling. (Gassing up the tank) However that valve is suck in the closed position which will not allow air out. If the air can not get out liquid fuel can not get in

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Dominick, you have a picture of the tank and related parts?
It is a tank venting issue. But specific to filling the tank.

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Even a better idea
Blp1228
You have a 2018 model with under 50,000 miles.
I bet the part is under warranty.

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Discussion Starter · #16 ·
Thank you guys for your expertise, I will look into that valve, and also will call the dealership and find out about warranty in that part..
 

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Discussion Starter · #20 ·
Good post Action
The Hybrid is supposed to be better by design
I love the way this hybrid handles it self , and I know other Fusion hybrid owners with over 200,000 miles and no problems at all, you never know with all this computerize parts..
 
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