Conditions for Running the DTC

WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.

The A/C refrigerant pressure sensor pressure is more than 453 psi (4.92 volts) with the A/C requested.
The A/C refrigerant pressure sensor pressure is more than 336 psi (3.76 volts) with the A/C not requested.
The A/C refrigerant pressure sensor pressure is less than 8.75 psi (0.20 volt) when the intake air temperature is more than 0°C (32°F) and DTCs P0112 or P0113 are not set.
The A/C refrigerant pressure sensor pressure is less than 0 psi (0.01 volt) when an intake air temperature (IAT) sensor DTC is present or the intake air temperature is less than 0°C (32°F).