1998 Explorer Check Engine Code P0443

What are the probable causes of Code P0443? This is on a 1998 Explorer XLT witha 4.0l engine

Welcome to this forum! The Explorer has a 4.0L or a 5.0L. Here's some information on the code: http://www.explorerforum.com/forums/showpost.php?p=1543356&postcount=3

How did you fit a 400 big block in your explorer?

Where is the evap valve located? Is there a useful wiring diagram?

Thanks for your help.

Check the evap valve beneath the battery tray-sometimes battery acid will drip on it and melt a hole in a hard to see location.

there is another evap valve and sensor near the evap tank assembly, which is on the left side of the spare tire. You may want to lower the spare to access it well.