Conditions for Setting 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
An internal malfunction or a momentary voltage spike has been detected by the driver door switch panel control module in the driver window motor while commanding the window UP or DOWN.
B320A 42
A not programmed driver door power window motor.
B320A 4B
The driver door switch panel control module has detected that the driver window is not "normalized" and can set for the following reasons:
- When the battery has been disconnected
- When the battery has been replaced
- When the door wiring harness has been disconnected
- When the window motor has been disconnected.