OBD2 Cable Failure Analysis: Port Environment Teardown with Transfer Impedance Measurements
The failure report landed in our engineering queue as a PDF attachment: 18 months of maintenance logs from a Pacific Coast terminal operator. The pattern was unmistakable—a specific “heavy-duty, shielded” OBD2 extension cable model was failing at 30% between months five and seven of deployment. Intermittent connection loss. CAN bus errors. The maintenance supervisor wanted to know […]