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Home >> Saturn >> 2003 >> L200 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1640: Control Module Output Circuit >> Diagnostic Aids
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Diagnostic Aids

A condition with the charging system may cause this DTC to set. Refer to DIAGNOSTIC SYSTEM CHECK - ENGINE CONTROLS  under SELF-DIAGNOSTIC SYSTEM. For an intermittent condition, refer to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 2.2L SATURN "L" SERIES article.

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