The brakes are the first thing getting fixed, thats why I was sent to look at it. Just noticed the code when I got there. They more than likely have been riding the inching peddle, cause it drops to the floor too before it drops the transmission into neutral. I pretty sure thats how they stop the truck too. They are a new customer and I havent had a lot of time to figure out what stupid things they do yet.

e32 is a 'first stage overheat".
You [most likely] really should fix the brakes first, as they may have been miss-adjusted or had a hardware failure, and may have caused the overheat condition. Not to mention the obvious safety concerns. And be sure the inching valve works correctly after fixing the brakes. Be sure to tell the operator to keep from riding with their foot on the left most pedal, and only use that pedal when they need to increase RPMs to lift more quickly.