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Discussion Starter #1 (Edited)
My 2008 5.7 Charger suddenly got a gas cap warning with subsequent codes P0445, P0446, & P0447. I changed the cap and looked everywhere for obvious leaks. I did not have access to a smoke machine. I searched the forums for a solution without success. I solved the issued, and I am posting this here to help others with a possible solution or at least one item to inspect should the same issue arise on your Mopar.

I pulled off the right rear inner fender well to gain access to the vapor canister/natural vac leak detection assembly. Disconnecting one fuel vapor line, one electrical connector, and one nut and the assembly removes quite easily. Once removed,
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you can check the integrity of the hoses, canister, and natural leak detection valve/solenoid. Removing the valve/solenoid off of the assembly revealed a significant hole in the back allowing outside air to enter. The copper lead to the solenoid was corroding as well. I have no idea what caused that hole. Likely just cheap plastic parts or the wire fried.. 35 bucks at the local parts store and now all is well.

I hope this helps someone with a similar issue.

Jack
 
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