Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
B3873 01
The control module detects a short to voltage.
Control Circuit = Short to Voltage - For greater than 3 s
B3873 02
The control module detects a short to voltage.
Control Circuit = Short to Ground - For greater than 3 s
B3873 04
Control Circuit = Open/High Resistance - For greater than 3 s