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Old 12-14-2011, 04:36 AM   #1
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2004 Mustang Gt Code

Hey guys wat does this code means- P0420???????
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Old 12-14-2011, 05:11 AM   #2
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Re: 2004 Mustang Gt Code

420 = good smokes
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Old 12-14-2011, 07:04 AM   #3
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http://www.obd-codes.com/p0420
Hope that helps out a bit
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Old 12-14-2011, 08:42 AM   #4
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It means 99% of the time one of your cats is bad only way to figure it out is if one is rattling or if you have access to a ford scan tool.
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Old 12-14-2011, 12:51 PM   #5
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Quote:
Originally Posted by BigB227
http://www.obd-codes.com/p0420
Hope that helps out a bit
Thanks bro, it really help!!!
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Old 12-14-2011, 12:57 PM   #6
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Anytime dude
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Old 12-14-2011, 01:00 PM   #7
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I hate living in cali. Now i have to take off the x pipe n put the original back on... Smog test......
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Old 12-14-2011, 01:28 PM   #8
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That sucks, Cali has the worst restrictions, I'm considering gettin an O/R H a lil down the road
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