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SAE J1939

SAE J1939 is a CAN-based application profile developed by SAE International for diesel powertrain applications. It has since been extended with application profiles for other commercial-vehicle use cases, including electric-truck powertrain applications.

Source checked3/3 values · 2026-10-25

Specification

1 source
Transportsother
Architectureproducer consumer
Encodingbinary
Standard bodySAE International
Standard refSAE J1939

Study notes

  • Originally intended for diesel powertrain applications.
  • Application profiles have been added for other commercial-vehicle use cases, including e-truck powertrain applications.
  • Profiles adapted from J1939 higher-layer protocols include ISO 11783 (Isobus), ISO 11992, IEC 61162-3 (NMEA 2000), ISO 25200 (formerly DIN 4630), DIN 14704, ACEA fleet management, and ISO 16844 tachograph systems.
  • The CiA IG J1939 discusses and comments on J1939-based documents.
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