Diagnostic Aids

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.

A high or low voltage DTC set in multiple modules indicates a concern in the charging system.
A possible cause of this DTC could be overcharging with a battery charger or jump starting.
A high or low voltage value in multiple modules indicates a concern in the charging system.