How to Diagnose Intermittent CAN Bus Failures in 5 Steps (Ghost Signals Fix)

Diagnosing intermittent CAN bus ghost signals: forensic close-up of fretting corrosion on connector versus clean J1939 waveform.

The highest cost in heavy-duty electronics isn’t a total shutdown. It’s the failure that allows operation to continue while silently corrupting J1939 data packets, generating phantom alerts, and systematically destroying confidence in every networked module. Dismissed as ‘ghost signals,’ these intermittent CAN bus failures are not mysteries; they are the inevitable outcome of physics overwhelming commercial connection systems. […]