Shutdown cause -112

We have a small group of 2012 and 2013 retina MBP and only one in the group has the -112 restart cause logged when it freezes in a hard manner. The rest have never once froze hard or shut down/rebooted spontaneously.

No diagnostics from Apple show a specific failure - the SSD has been tested extensively and doesn't have any other errors that fsck lists or corrects (other than the typical minor and correctable filesystem corruption that a hard reboot causes).

In the last 3 months, it has logged two -112 restarts and two -128 restarts.

If you paid for AppleCare - take it in and get it repaired. If you have to pay for a repair, it will likely be the $300 to $400 flat rate repair where they send it in for factory diagnostics and overhaul.