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Home >> Buick >> 2000 >> Regal GS >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - Self-Diagnostics - 3.8L >> Diagnostic Tests >> DTC P0604: Control Module Random Access Memory (Ram) >> Circuit Description
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Circuit Description

PCM performs an internal self-test on its RAM or read/write memory. If this self-test fails, DTC will set.

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