Pcm Code P074 - Intermittent Intake Air Temp Sensor Signal: Notes
WARNING: This page is about a different car, the 1993 Cadillac Seville and 1993 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.
PCM Code P074 will set when PCM detects a large change in sensor output voltage in a .3-second period of time.