J1708 vs J1939: Untangling the Data Links in Your Heavy-Duty Fleet
If you’ve spent any time with trucks or off-highway equipment built before 2010, you’ve likely wrestled with a diagnostic port where the data doesn’t match reality. The scanner powers up, but RPM readings jump, fault codes appear and vanish, or a J1939-capable tool shows nothing on an older rig. This isn’t a software glitch. In […]