Possible Causes
WARNING: This page is about a different car, the 1996 Mercury Mystique and 1996 Ford Contour. However, it is still accessible from the selected car via links, so may be relevant.
Code 24 will set if there is an open circuit or high resistance in safing sensor or wiring harness Orange/Blue wire or Brown/White wire. Intermittent battery voltage at terminal No. 13 of diagnostic monitor can cause reference voltage inside of diagnostic monitor to fluctuate and cause Code 24 to set in some circumstances.