Diagnostic Aids
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
This fault indicates that there is either a communication or battery voltage problem. If this DTC sets intermittently, check the power, ground and communication circuits. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.