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Old 10-21-2010, 01:22 AM
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brad12kx brad12kx is offline
Just some guy in Canada


 
Join Date: Apr 2010
Location: Brandon, MB
Posts: 22,792
Gender: Male
Vehicle: 2010 Ram 1500 QC
Trim Level: Sport
Color: Black
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 21
Rep:2581
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P0443 is specific to the circuit side of the operation. The ECM is looking for both power and the controlled ground signal to the purge valve solenoid. If either is outta whack, it throws this code. Although the issue 'could' be the valve, it is not the most likely suspect, but you've ruled that out already anyway.

Have you check the wiring....opens, shorts, chaffing of the wires. If all of these are good, the problem could be the PCM, which controls the signal to the purge valve. If after checking all the wiring you don't find anything, it might be best to have the dealership test it with their scan tool. They can tell the system to turn on/off the valve manually to determine whether the problem is wiring, or control circuitry.

Hope this helps somewhat....
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Interested in one of my mods?
If it's underlined, it's a link to that mods thread.

2010 Ram 1500 Hemi Sport, 3.92, Leather, NAV, Alpine, Sunroof, Trailer tow, Brake Contoller, Rear Cam
Mods - 3M clear protect, Decals removed, Electric Tailgate Lock, Tow Hooks, Skid Plates, Bed Rug, Pace Edwards Bedlocker Electric Tonneau, Timbren Rear SES, Tinted Tail Lights, Debadged, Grill Blacked Out, Shorty Antenna, Black Chromed Emblems, Lightly tinted front windows, DS Predator, Cabin Air Filter, K&N Drop In, Mufflex (Magnaflo) DOD24M, Sonnax line pressure booster, Volant CAI
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