Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2016 GMC Acadia, 2016 Chevrolet Traverse, and 2016 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
B320A 39
If the DTC is current, the window motor must be replaced before the DTC can be cleared.
B320A 42
The power window motor must be programmed before the DTC can be cleared.
B320A 4B
The power window motor must be normalized before the DTC can be cleared.