Sae J1939-73 Pdf ✦ Simple & Validated

: Heavy-Duty On-Board Diagnostics regulations in regions like North America (CARB/EPA) and Europe (Euro VI) mandate the use of specific J1939-73 messages (such as DM12 and DM19) to ensure emissions enforcement agencies can read vehicle emissions compliance data.

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Because J1939 is built on CAN, it utilizes 29-bit identifiers. Diagnostic messages use specific Parameter Group Numbers (PGNs). For example: 65226 (0xFECA) DM2 PGN: 65227 (0xFECB) Handling Multi-Packet Messages Sae J1939-73 Pdf