![My 2007 hemi 2500 truck is coding p0456 & p0457 and says gascap on the odometer. I replaced the the gascap and nothing My 2007 hemi 2500 truck is coding p0456 & p0457 and says gascap on the odometer. I replaced the the gascap and nothing](https://ww2.justanswer.com/uploads/DR/drivefast1971/2012-11-02_154145_1.jpg)
My 2007 hemi 2500 truck is coding p0456 & p0457 and says gascap on the odometer. I replaced the the gascap and nothing
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Amazon.com: Dorman 310-500 Evaporative Emissions System Leak Detection Pump Compatible with Select Chrysler / Dodge / Jeep Models : Automotive
![EVAP Control System codes P0456, P0440, P0441, what is it and can I fix it, How? Optional Information: 2003 Dodge RAM EVAP Control System codes P0456, P0440, P0441, what is it and can I fix it, How? Optional Information: 2003 Dodge RAM](https://f01.justanswer.com/ref/https_w05.dealerconnect.chrysler.com/service/mds2002/serviceInfo/en_US/80f36973.gif)