I had one of those visits where they couldn't find the problem so they just reset the code. In this case, it's not too serious, I had my tire pressure sensing system reporting a fault. They couldn't find any reason for it so they just said to keep an eye on it and bring it back if it came on again.
That never really gives me a warm and fuzzy feeling but at least it's in a system that isn't critical to the car's performance or safety. It does reinforce my thoughts about replacing my CMAX once the warranty is up at three years especially with Ford getting out of the sedan and hatchback businesses.