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2003 Ram 1500 5.7L QC-- P0441 / P0456

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Old 03-20-2010, 10:33 PM
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Jacob2k8 Jacob2k8 is offline
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Default 2003 Ram 1500 5.7L QC-- P0441 / P0456

Hey. I've got an 03 ram hemi qc 2wd. I have been getting P0441 and P0456 codes for a few weeks now. I have tried resetting the PCM twice just to make sure they would come back. I have taken it to the dealership when I just had the p0441 code. They suggested it was the Leak Detection Pump in the EVAP system. I am just clueless as the the p0456 code is. I have replaced the gas cap to a locking gas cap after the codes appeared and no change. I have glanced over the lines directly connected to the EVAP canister, but i cant see any cracks... not say that there definitely are none. Thanks for any and all help.
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Old 03-20-2010, 10:34 PM
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They haven't replaced the Leak Detection Pump yet. Waiting on it to get off back-order.
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Old 03-25-2010, 07:48 PM
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I've got the same P0441, Haynes shows "EVAP system purge system performance"
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