GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Got a Strange DTC today-P0446

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Old Feb 27, 2008 | 06:44 PM
  #1  
korinwoodo's Avatar
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Got a Strange DTC today-P0446

Went out to buy some food tonight and when I came out and hopped in the car, the CEL came on. Grabbed my X-Cal from the trunk and it read the code as P0446, which is "P0446 Evaporative Emission Control System Vent Control Circuit Malfunction."

Anyone know what might have caused this?

I'm going in Saturday for service, think I need to get it checked out before that?
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Old Feb 27, 2008 | 09:44 PM
  #2  
rick06gtmustang's Avatar
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code

Check your gas cap...make sure she is tight
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Old Feb 27, 2008 | 11:21 PM
  #3  
theedge67's Avatar
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From: St. Louis Area
Gas cap.
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Old Feb 28, 2008 | 01:07 AM
  #4  
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yep gas cap
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Old Feb 28, 2008 | 06:07 AM
  #5  
05YellowGT's Avatar
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From: Delray Beach , FL
I got a code once for the Evaporative Emission Control , I don't remember the number but it's was probably the same one. Anyway , I had hit a piece of tire on the road and it knocked one of the vacuum hoses that connect to the tank loose and that was it. You might want to look for that too , they attach to the front of the tank ...
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Old Feb 28, 2008 | 07:28 AM
  #6  
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Tightened the cap and cleared it last night. Didn't come back so that seems to have been the problem. I'm gonna check the vacuum lines tonight anyway. Thanks guys
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Old Feb 28, 2008 | 05:51 PM
  #7  
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****, its back.
too cold to check the vacs right now.
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Old Feb 28, 2008 | 06:03 PM
  #8  
70MACH1OWNER's Avatar
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From: New Carlisle, Ohio (20 miles north of Dayton)
Originally Posted by rick06gtmustang
Check your gas cap...make sure she is tight

+1 ^^


ON a different subject...how are those Borla's doing??? :-)
Scott
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Old Feb 28, 2008 | 06:11 PM
  #9  
muskrat2000's Avatar
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From: huntsville, alabama
hey mine set a code like that when i ran leaded gas in it AT THE TRACK
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