History Codes B335 and B336

This combination of History Codes could be caused by:

^ Two opens in the Data Circuit isolating the CRTC and IPC from the BCM, and at least one of the opens is momentary. One of the opens would be in CKT 800H, including the IPC and BCM and the other open would be in CKT 800F, including the CRTC and Programmer.