P0455 code

Tiny
HENRY531
  • MEMBER
  • 2004 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
I have a 2004 chevy blazer and I got a trouble code p0455. What does this mean?
Friday, April 1st, 2011 AT 11:19 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
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
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Friday, April 1st, 2011 AT 11:40 PM

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