Conditions for Setting the DTC

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

B1380 01

Accessory voltage circuit is shorted to voltage for more than 2 seconds.

B1380 06

Accessory voltage circuit is open for more than 2 seconds.
Ignition 1 voltage, accessory voltage, or off/run/crank voltage circuit shorted to ground.
Battery positive voltage circuit of the ignition switch open or shorted to ground.