I Would First go and purchase one..So that you know what you are looking for. Then remove the Drivers side under dash panel then look towards the center of the car ..very easy..about 10min to do
I did buy one prior to the post, but I was disappointed (with myself) for not being able to find it under the passenger's side dash. I expected to locate it near the fan or filter. No luck.
As Mark says, you've got to remove the underdash panel on the driver's side. You will find it up near the center console. With the new part in hand, look at how many wires are going to it and then find that number of wires running to your sensor. Even with the new one in hand, it's a little hard to pick out if you've never done it before.
Okay, this is the definitive answer to the location of the sensor. After taking apart the better part of the dash, glovebox, footwell covers, etc, I have before you the photos illustrating the location of the sensor.
To get to the sensor, the driver's side footwell cover must be removed. I suggest unscrewing the single screw holding the hood release mechanism. Do not remove the two screws holding the ODBII port. The plug is removed from the backside by sliding the receptacle lock to the side. Photo shown below.
The second photo shows the location of the 2 wire evaporative temperature sensor. Measuring from the front of the dash at the radio, it is located about 12 inches towards the front of the car.
While I was taking things apart, I also located the heater core temperature sensor. It is just behind the dash climate control unit. It pulls out, with difficulty.
In case you were wondering what the evap sensor looks like, a photo is shown below.
Linear Mode
