Code #1019494? 1989 riv computer displays=electrical,service mode,check engine! on 1990 Buick Riviera

The check engine light stays on. The computer displayes electrical problem, and now a service mode shows on the screen. what is code #1019494( after inspection)

Asked by for the 1990 Buick Riviera
You have to get in to the engine computer, the very long code does not help very much.
Get the check engine light code with a scan tool, then go from there.