Circuit/System Description
WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
Ignition - On/Vehicle - In Service Mode - B174W Frontview Camera - Windshield - Calibration Data = Invalid
The B174W Frontview Camera Module performs a self-test to verify if a critical malfunction exists within the system. During the power-up mode, the Frontview Camera Module checks for a valid calibration data set.