Conditions for Setting the DTC
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
B198B 12
A short to voltage is detected in the windshield wiper motor relay control circuit.
B198B 11
A short to ground is detected in the windshield wiper motor relay control circuit.
B198B 13
An open or high resistance is detected in the windshield wiper motor relay control circuit.