Check Engine Light - Lose Gas Cap - Code 455 - Cobalt SS Network



Problems/Service/Maintenance Do you have problems with your new 2.0, 2.2, or 2.4L? What kind of service did you have done?

Reply
 
 
 
Thread Tools Search this Thread
Old 10-07-2008, 04:23 PM   #1
Member
Thread Starter
 
Join Date: 08-26-07
Location: Homosassa, FL
Posts: 349
Thanks: 0
Thanked 0 Times in 0 Posts
Check Engine Light - Lose Gas Cap - Code 455

My balt is sending a "Please Check Gas Cap" message every time the tank drops below 3/8's a tank, and then the check engine light comes on the next time I start her up. I've connected a computer and the code shown is 455. Gas cap seems tight, and I double check to make sure. Reset the thing, and today, for the third time, check gas cap message and engine light comes on below 3/8's a tank.

Any ideas? Also going to call the local stealership's service dept, and see what they have to say. Should this be covered under warranty? The car only has 25.1k miles on it and is an 07.

j
nexus23 is offline   Reply With Quote
Old 10-08-2008, 07:48 PM   #2
New Member
 
Join Date: 04-07-07
Location: Long Island, NY
Posts: 57
Thanks: 0
Thanked 0 Times in 0 Posts
Standard problem if you still have a warranty go to the dealer, mine is in as of today for a similar issue had P0455 and P0496 in succession.
Ragnarok69 is offline   Reply With Quote
Old 10-08-2008, 08:01 PM   #3
Senior Member
 
Join Date: 04-08-06
Location: Charlotte, NC
Posts: 2,397
Thanks: 0
Thanked 1 Time in 1 Post
p0455 is an evap leak code.......usually a loose gas cap, but could be anything really in the evap system leaking and not allowing it to hold a vacuum. Have em check it out.
Sunburst_SS is offline   Reply With Quote
Old 10-08-2008, 08:05 PM   #4
Senior Member
iTrader: (2)
 
bobbyhill31286's Avatar
 
Join Date: 10-12-07
Location: Essex, MD
Posts: 3,306
Thanks: 0
Thanked 0 Times in 0 Posts
DTC P0455
System Description
The control module tests the evaporative emission (EVAP) system for a large leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the EVAP system vacuum level. When the conditions for running are met, the control module commands the EVAP canister purge solenoid valve OPEN and the EVAP vent solenoid valve CLOSED . This allows engine vacuum to enter the EVAP system. At a calibrated time, or vacuum level, the control module commands the EVAP canister purge solenoid valve closed, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum level. If the system is unable to achieve the calibrated vacuum level, or the vacuum level decreases too rapidly, this DTC sets.

direct from GM
bobbyhill31286 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Whats my cobalt worth??? Empty Pockets The Lounge 24 04-08-2017 08:08 AM
$140 Upper Engine Mounts! TurboTechRacing Supporting Vendor Deals & Group Purchases 11 10-27-2015 07:58 AM
Anyone ever get P0331 code ? If so, what did you do to fix it? twilson380 2.0L LNF Performance Tech 6 09-14-2015 10:52 AM
Need help! 2006 Cobalt SC jthwjde Problems/Service/Maintenance 1 09-07-2015 09:24 AM
Wanted 2007 2.0 SC/SS Spark Plug Coils Fearedbynone Parts 0 09-04-2015 10:24 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:22 PM.