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Home >> Oldsmobile >> 1995 >> Ninety-Eight 3.8 1 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM/Pcm Code Charts >> Code P1530, A/C Head Pressure Switch >> Circuit Description
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Circuit Description

A/C head pressure switch opens at 200-220 psi. When head pressure switch interrupts ground at PCM, left fan should run at high speed.