Thanks guys for the first go around of ideas. When this happens, it is typically when moving at higher speeds over uneven terrain. After it occurs, nothing but a shutdown and restart fixes the issue. I can actually hit the off button and then the on button fast enough that the engine doesn't shutdown fully and goes right back to running, clearing the error. Pressing the lock out lift button doesn't clear the error, I do hear a relay click and but the lock remains. The arm rest doesn't seem to impact it, wiring looks good etc.