To be certain, you should:
* Consult a repair manual: A Haynes or Chilton manual specific to your year and engine will have a diagram showing the exact location.
* Use a parts diagram: Online auto parts stores (like AutoZone, Advance Auto Parts, etc.) allow you to search by your vehicle's year, make, model, and engine. Their parts diagrams often show the sensor's position.
It's a small sensor, often with a single wire connector. Be careful when locating it, as the engine compartment is hot when the engine is running.