I found this on my garage floor and it looks like an airbox component but I can't find where is came from. It is hollow and looks like it meters air flow. It was perfectly clean and dry when I found it which leads me to the top of the engine somewhere.
That's what I was leaning to but I can't find a loose hanging wire anywhere. Nor can I find a replacement part that looks like it. I also checked my kid's Honda Civic but nothing looks missing. If I had to guess it looks like this part seperated from the electronic portion of the sensor. Where is this ambient air temp sensor located on the '00 Villager?
According to the Free Online Service Manual the Intake Air Temperature Sensor is located on the fender well by the battery.
The Free ONLINE SERVICE MANUAL has a couple of pictures that may help you. Look under the Emissions Controls section and click on IAT Sensor reoval and installation.