Code P1530, A/C Head Pressure Switch: Notes
WARNING: This page is about a different car, the 1995 Pontiac Trans Sport, 1995 Oldsmobile Silhouette, and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.
A/C head pressure switch opens at 200-220 psi. When head pressure switch interrupts ground at control module, left fan should run at high speed. If Code P1530 is set, cooling fan(s) will run at high speed anytime A/C is requested. Code P1530 does not illuminate Malfunction Indicator Light (MIL).