Sae J193973 Pdf Exclusive __link__
đź’ˇ If you are a developer, look for the J1939 Digital Annex . It is an Excel-based companion to the PDF that lists every specific SPN and FMI for easier coding. To help you get exactly what you need, let me know: Are you developing software or fixing a truck ? Do you need a list of specific SPN/FMI definitions ?
The document is the standard for Application Layer - Diagnostics in heavy-duty vehicle networks. It defines how electronic control units (ECUs) communicate health, fault, and repair data. Key Diagnostic Functions sae j193973 pdf exclusive
Your DTC reads: SPN 91 FMI 3