Idle Air Temperature Sensor

Having a problem so looking to you guys/gals to give me some input. I had the oil changed like a week ago and as soon as I got the car out of the garage, the check engine light came on.

I took the car to autozone and had them hook the computer up and checked the errors codes and came up with Idle Air Temperature Sensor.

Can someone provide me some diagrams where this is at as well as some suggestions on what the problem may be. The car is running fine, gas mileage is a bit low but nothing else is noticeable.