If you look on driver side, just under the air intake resonator, you'll see a gray 2 wire connector, make sure its seated properly. If the connections are good, disconnect the sensor and jumper the two wires at the harness connector, then see if you set code P0097, If you do the circuits and ECM are OK, replace the IAT2 sensor. It screws into the intake under that air resonator.
It is amazing the wealth of knowledge one can get on this site, I was about to ask about this same code and I did a search first and came up with this. Maybe his question and your solution will fix my problem...:ro)
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