Conditions for Setting the DTC
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
The microprocessor sets this DTC if it cannot write to non volatile memory. The DTC is also set if the microprocessor can not run an accurate check sum on the non volatile memory.