Gran Cherokee transfer case

Hello All.my First time at this part of the forum. While driving my 2014 gran cherokee, a message pops up to service the transfer case. It doesnt stay on very long and its only happened a couple of times. The vehicle has about 89K miles on it and has been trouble free other than a thermostat. I scanned for codes and the only current on is a left front speed sensor.I plan to change that but, was wondering if the speed sensor is giving false readings to the transfer case controller. Is there something I should be concerned about here? Thanks
Author: fivepoint