Conditions for Setting the DTC
WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
B305E 01
The ignition output is not active and a short to battery is detected 3 consecutive times on the ignition voltage circuit.
B305E 02
The ignition output is active and a short to ground is detected on the ignition voltage circuit.
B305E 05
The ignition output is active and an open or short to battery is detected on the ignition voltage circuit.