DTC B1480: Battery Rundown Protection Circuit Malfunction: Description

Battery rundown protection function allows BCM to disable courtesy lights, cargo lights and underhood light 40 minutes after ignition is turned off. DTC will set when BCM commands the inadvertent power relay on but voltage does not exist at relay output to BCM. DTC B1480 can be cleared using scan tool, or history DTC will disappear after 100 ignition cycles if fault conditions do not reoccur.