2001 Saab 9-5 code 0455 - SaabCentral Forums
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Old 7th August 2009
dmsauto dmsauto is offline
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Default 2001 Saab 9-5 code 0455

What could a code 455 (EVAP Control System (Large) be on a 2001 Saab 9-5 2.3T? The car runs great. If you need any more details just ask.
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Old 7th August 2009
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SaabBlackMan SaabBlackMan is offline
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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
Saab Blackmista.
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Old 7th August 2009
Slee_Stack Slee_Stack is offline
Join Date: May 2008                                                
Location: Atlanta, GA, USA
My Saabs: 2008 9-3 Aero SC 6MT Vtune 0
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I got the code this morning.

After pulling the engine cover off, I noticed my ETS check valve is broken.

I'm kinda leaning towards this being the cause.

Of course, I can't find a universal replacement in the size though. Looks like I'll have to waste $50 at the stealership.

I'm a hair tweaked. This type of thing should NOT cost more than $10.
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