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Home >> Cadillac >> 1991 >> Eldorado >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> Pcm Code EO58, Pass Key Control Problem >> Note On Intermittents
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Note On Intermittents

If code is intermittent, check short to ground or voltage on circuit No. 229, intermittent open in that circuit or intermittent loss of power to module.