Conditions for Setting the DTC
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
The BECM compares the High Voltage current limit relay control circuit to the BECMs internal 12 volt measurement reference circuit. This DTC sets when the high voltage current limit relay control circuit voltage and the BECMs internal voltage reference are within 2 volts of each other when the current limit relay is commanded open.