check engine light--PO455 error code - Pontiac GTO Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 01-29-2012, 03:14 PM Thread Starter
 
KroBeast13's Avatar
 
Join Date: Apr 2011
Location: Maryland
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
check engine light--PO455 error code

My check engine light came on in my 06 GTO with a code reading PO455. It said something about EVAC systems leak detected. I see no leak whatsoever. Can someone fill me in on what this issue is?

Thanks
KroBeast13 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 01-29-2012, 03:24 PM
Administrator
 
05GTO's Avatar
 
Join Date: Oct 2004
Location: Deliverance, GA
Posts: 5,012
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Check your gas cap,

Quote:
What does that mean?

This indicates a fuel vapor leak or lack of purge flow in the EVAP control system. It means a large leak has been detected. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms

You likely won't notice any drivability problems.

Causes

A code p0455 most likely means one or more of the following has happened:

A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
Other leak or damaged piece in EVAP system

Possible Solutions

With a p0455, the most common repair is to:

Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, and/or
Inspect the EVAP system for cuts/holes in tubes/hoses (you may hear a vacuum noise or smell fuel), repair if necessary

Randy


05GTO is online now  
post #3 of 6 (permalink) Old 02-02-2012, 05:52 AM
 
Ehrgeiz X's Avatar
 
Join Date: Apr 2011
Posts: 85
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I get this code on mine every once in a while, too. I just open the gas cap, wipe it, and tighten it and it goes away. Doesn't affect driving or anything, but as stated, still check for the smell of gas or any breaks in your lines just to be safe.
Ehrgeiz X is offline  
post #4 of 6 (permalink) Old 02-02-2012, 07:03 AM
 
HP11's Avatar
 
Join Date: Apr 2009
Location: San Bernardino, Ca.
Posts: 2,494
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Quote:
Originally Posted by Ehrgeiz X View Post
I get this code on mine every once in a while, too. I just open the gas cap, wipe it, and tighten it and it goes away. Doesn't affect driving or anything, but as stated, still check for the smell of gas or any breaks in your lines just to be safe.
You probably need to replace the cap. GM issued a recall on the caps a few years back and will replace it free.

2005 Pontaic GTO - CGM 6 Speed (My car)
2004 Ford Ranger Edge Supercab (My daily driver)
2010 Mercedes Benz C300 Sedan (Wife's car)
2014 Kia Rio LX (Wife's daily driver)
HP11 is online now  
post #5 of 6 (permalink) Old 02-03-2012, 07:09 AM
 
Ehrgeiz X's Avatar
 
Join Date: Apr 2011
Posts: 85
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by HP11 View Post
You probably need to replace the cap. GM issued a recall on the caps a few years back and will replace it free.
I know what I'm doing tomorrow...!
Ehrgeiz X is offline  
post #6 of 6 (permalink) Old 02-03-2012, 07:39 AM
 
HP11's Avatar
 
Join Date: Apr 2009
Location: San Bernardino, Ca.
Posts: 2,494
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Have them look up "TSB 07011 JULY 2007 Campaign - Fuel Filler Cap Warranty Extension". I believe that it extends the gas cap warranty to 10 years/120000 miles or something like that.

2005 Pontaic GTO - CGM 6 Speed (My car)
2004 Ford Ranger Edge Supercab (My daily driver)
2010 Mercedes Benz C300 Sedan (Wife's car)
2014 Kia Rio LX (Wife's daily driver)
HP11 is online now  
Sponsored Links
Advertisement
 
Reply

  Pontiac GTO Forum > The 2004-2006 GTO > 2004-2006 GTO General Discussion

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac GTO Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Check engine light code help Black06GTO Service, Maintenance and Technical Discussion 2 12-06-2010 06:25 PM
engine light but no code ericsgixxer1000 2004-2006 GTO General Discussion 5 09-01-2010 07:23 PM
Check Engine Light? koolkam89 Service, Maintenance and Technical Discussion 6 04-19-2010 01:48 PM
Check Engine Light - K&N? Nomad 2004-2006 GTO General Discussion 9 12-31-2009 01:19 PM
engine code check. wannagofast 1964-1974 Tempest, Lemans & GTO Complete Engine Compartment Discussion 3 10-15-2008 11:45 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome