While inspecting the Internet video feed of President Omar Hassan being held captive by Samir Mehran, Chloe O'Brian observes the light source in the room is through a window, describing it as true daylight because it is, "5,600 degrees kelvin." Unlike the degree Fahrenheit and degree Celsius, the kelvin is not referred to as a "degree", nor is it typeset with a degree symbol; that is, it is written K and not °K. Many people, especially those who are not scientists, commonly refer to "degree Kelvin". It is scientifically incorrect but commonplace.
When Dana Walsh attempts to escape CTU for the second time and her ID Card is ran, if you pause the screen at the bottom of her ID reading it says "Apprenhend On Site" instead of apprehend.
When Dana crashes her car there is a shot from inside the vehicle where it is obvious that there is no one in the driver's seat.