oil pressure on 2000 Buick Park Avenue

oil pressure reads 0 when not running, after starting up pressure reads 130 immediatly even before car gets warmed up

Asked by for the 2000 Buick Park Avenue
i would have the pressure checked manually. 130 is way too much if it is correct. have it checked at a shop

130 oil pressure is correct when the engine is running stopped for a light. Why is it