Check engine code P0455
Thread Starter
Intermediate
Joined: Apr 2015
Posts: 33
Likes: 16
Check engine code P0455
I have a 2015 Corvette Z06 with only 3400 miles. I recently started getting check engine code P0455, which supposedly has to do with gas tank evaporation equipment issues. I know that there are two evap systems on the car, one that goes to a charcoal filter, and another that routes the evaporated fuel back to the engine to be re-burned. I vaguely remember a service bulletin saying that some cars may have this issue, and that it would be covered under warranty should it occur. That was back in 2015, and my independent service shop can find no current info on it. I realize that my warranty has expired, but wonder if it might still be covered under a recall issue.
I hesitate to take it to the dealer, because I’m considering trading it in on a new Z06, and don’t want to reduce its value. If it were covered under a recall, it would affect the value less, as GM would pay the dealer to fix it.
Does anyone have any info on this code, and how I should proceed to resolve it? If I had to pay for it myself, any idea what it might cost? Thanks for any help.
I hesitate to take it to the dealer, because I’m considering trading it in on a new Z06, and don’t want to reduce its value. If it were covered under a recall, it would affect the value less, as GM would pay the dealer to fix it.
Does anyone have any info on this code, and how I should proceed to resolve it? If I had to pay for it myself, any idea what it might cost? Thanks for any help.
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,408
Likes: 3,964
From: Cape Coral, Florida
FYI there is only one EVAP system on the car…not 2…most common fix is the gas cap for this gross or large leak…any leak through the vent or purge valve can cause this DTC to set as well as a leaking EVAP hose…I’m lucky to have a smoke machine to find these pesky EVAP leaks.
Last edited by C5 Diag; Oct 28, 2022 at 06:13 PM.
Tech Contributor
Joined: Oct 1999
Posts: 41,013
Likes: 9,773
From: Charlotte, NC (formerly Endicott, NY)
Since your warranty is expired it isn't covered under the warranty. There is no recall. TSBs just tell mechanics how to resolve a problem they encounter. It could be a problem with a car or it could be a problem with the documentation procedures they have to follow.
Bill
Bill
7th Gear
Joined: Oct 2022
Posts: 7
Likes: 3
From: BC
I had the same issue and same OBD Code. Replacing the EVAP purge valve solved my issue. It is located in front of the driver's side head on top of the engine. Quick, easy, replacement. One bolt, one EVAP hose, 15 minutes in total to replace.
1st Gear
Joined: Nov 2022
Posts: 1
Likes: 0
Wire rigging on EVAP purge valve stuck
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7th Gear
Joined: Oct 2022
Posts: 7
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From: BC
After you release the locking tab you have to squeeze/pinch the electrical connector in just the right spot while gently pulling on it. Sometimes they can be tricky and stubborn.
Last edited by highspeedz; Nov 10, 2022 at 11:37 PM.
Intermediate
Joined: Dec 2017
Posts: 27
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From: Orlando Fl
Do you have a photo by chance?
