Conditions for Setting the DTC
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
P0112
The ECM detects that the IAT sensor signal is warmer than 149°C (300°F) for greater than 5 seconds.
P0113
The ECM detects that the IAT sensor signal is colder than -39°C (-38°F) for greater than 5 seconds.