P1443 indicates a mechanical fault in the Evaporative Emission (EVAP) Purge Flow System. Nine times out of ten this code is due to a loose gas cap. So that would be the first thing to check. Also, the cap may not be holding pressure.
The other things you can look for are pinched, plugged, blocked, cracked, cut or disconnected vapor hoses between the fuel tank and carbon canister. Check for a cracked or broken carbon canister or fitting(s).
I honestly feel that having the system fogged will help identify the leak. It could actually be the charcoal canister itself.
I hope I'm helping and not confusing you.
Friday, October 23rd, 2009 AT 10:44 PM