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Home >> Oldsmobile >> 2002 >> Intrigue GL >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 3.5L >> Diagnostic Tests >> DTC P1640: Output Driver Module 1 >> Diagnostic Aids

Diagnostic Aids

An over charging condition may set this DTC. See ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.