Originally Posted by FireRox21

I too am getting a code 24 for the IAT sensor. I just replaced the AFM, but I am still getting a check engine light/code. However, I pull up the replacement IAT sensor at Auto Zone and get a little message that says the sensor cannot be used on pollution controlled vehicles. What does that mean? I just passed smog here in California and won't be due for another 2 years. How am I supposed to change this sensor and get rid of the light/code, if I'm not supposed to use it on pollution controlled vehicles? Anyone have an idea, or is this some stupid California thing. BTW, I have a 1990 4Runner SR5 V6 with a new engine, new everything, new sensors (except the IAT), etc. Any help would be great!!!