Conditions for Setting the DTCs
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban, and 2018 Cadillac Escalade ESV. However, it is still accessible from the selected car via links, so may be relevant.
P0097
NOTE:
The scan tool display range is between -40 to +150°C (-40 to +302°F).
The ECM detects that the IAT sensor 2 signal is less than 13 Hz, colder than -60°C (-76°F), for greater than 5 s.
P0098
The ECM detects that the IAT sensor 2 signal is greater than 390 Hz, warmer than 150°C (302°F), for greater than 5 s.
P0099
The ECM detects that the IAT sensor 2 signal is intermittent or has abruptly changed for longer than 5 s.