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Check Engine - P0455 Error

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check engine light evap kia 2.4 p0455 sorento
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9.3K views 4 replies 3 participants last post by  jolt2  
#1 ·
Hi all,
I have a Kia Sorento 2011 LX 4 cylinder. I've been having the check engine light for a couple of months and its showing P0455 (Large Evap Leak). I've changed the fuel filler neck because it was rusty, then the purge valve, Canister valve, fuel pump, the seal and the fuel pump sensor. However, the check engine light still comes out. Do you have any suggestions what I can do about it or if there are any other reasons?

Thank you for your help.
 
Discussion starter · #3 ·
jolt2 said:
What you can do is take it to a shop that has a smoke machine to have it tested for vacuum leaks instead of guessing and throwing parts at it.
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I took it, they did a smoke test and there was no leak. Then they suggested to check the pressure sensor and the fuel pump. Found a crack in the fuel pump, so I replaced the pump and it comes with a new sensor by default. The light stayed off for a week or so then came out again.
 
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