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Home >> Buick >> 1995 >> Park Avenue Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> ECM/Pcm Code Charts >> Code P1530, A/C Head Pressure Switch >> Circuit Description

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.

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