Not a good issue to deal with mid-cook.
What error message shows up in the display???
But after many cooks under our belts we learn to prepare for the worst, some have back-ups, others resort to manual probe thermometers. We learn that the probe feed placement and cooking temperatures are critical to the Maverick. I have had mine for over a year using 1-2 times a week and have not had a problem, but I did purchase a spare set of probes because others had commented on problems.
If it is a probe error message there are newer style probes available,
has them and offers free shipping on orders over $39.00 in case you need anything else.