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Q: 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)
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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.
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