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p0456

  1. 2008 GT - Code P0456 (small evap leak)

    2005-2010 Mustang GT Tech
    2008 GT - Code P0456 (small evap leak) SOLVED Hello and thanks for reading this. A couple of months ago my GT threw a code P0456, I've been reading the forums and trying to find anyone who has solved this. What I've done: 1) replaced my gas cap 2) replaced the purge valve (the one under the...
  2. Gas cap problems (P0456) on 05-09 mustang?

    2005-2010 Mustang GT Tech
    Does anyone else have problems with their gas cap constantly going bad? Since ownership of my 2006 Mustang GT I have had problems where my gas cap takes zero effort to uncap, and I constantly have to buy new one ~6 months or so. I'm not sure if the caps from O'Reilly are just **** or what.
  3. P0456 - EBD Error code...New Fuel Pump?

    2005-2010 V6 Mustang Tech
    Hi Guys, My '06 V6 Mustang came off warranty a month ago. And like you'd expect, the check engine light came on abt 2 weeks ago after I filled gas. I hadn't tightened the gas gap, which I then did. The engine light never went off. I took it to the dealership this weekend and they said it's...
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