Yes, it needs to be fixed. If you travel into the mountains or encounter weather with substantially different air pressure than normal sea-level temp & pressure, your engine will run poorly because it does not have the correct input on air density. Even highand low temperature can affect air pressure, which is what this sensor reads.
2004 American Tradition; 2007 GMC Acadia
Homebase in the Ocala Nat'l Forest near Ocala, FL