Diagnostic Aids
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
An over charging condition may set this DTC. Check charging system. See appropriate GENERATORS & REGULATORS in ELECTRICAL.
Thoroughly inspect any circuitry suspected of causing the intermittent complaint. Repair the circuits as necessary. Go to INTERMITTENTS in TROUBLE SHOOTING - 3.1L CENTURY, GRAND PRIX & MALIBU article.