Fuel tank pressure build up, and code P0441 - Jeep Garage - Jeep Forum

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Old 02-11-2016, 07:33 PM
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Fuel tank pressure build up, and code P0441

I recently had my check engine light come on, it was code P0441 (evaporative emission system) and also my gas tank builds up pressure. like when i take the cap off to fill up and it just releases a bunch of pressure, and it take for ever to fill up, it wont let the gas flow in basically. must be something to do with the venting of the tank... any help would be greatly appreciated.

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Old 02-12-2016, 09:24 PM
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Re: Fuel tank pressure build up, and code P0441

Quote:
Originally Posted by trent88 View Post
I recently had my check engine light come on, it was code P0441 (evaporative emission system) and also my gas tank builds up pressure. like when i take the cap off to fill up and it just releases a bunch of pressure, and it take for ever to fill up, it wont let the gas flow in basically. must be something to do with the venting of the tank... any help would be greatly appreciated.
I have same problem last year with my 2011 JGC. Same code Po441. What I did just replaced gas cap and problem never come back. New gas cap is very cheap from dealer. I don't know if You know but gas cap have release valve build in.
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Old 02-13-2016, 01:13 AM
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Re: Fuel tank pressure build up, and code P0441

Thank you for the info! Much appreciated. I will give that a shot.


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Old 02-19-2016, 04:15 PM
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Re: Fuel tank pressure build up, and code P0441

Ended up being the ESIM Module


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