{"id":"j1939","model_id":"SAE J1939","name":"SAE J1939","summary":"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.","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."],"safety_notes":[],"sources":[{"url":"https://www.can-cia.org/can-knowledge/j1939-profile-family","title":"J1939 profile family","accessed":"2026-10-25"}],"verification":{"status":"source_checked","checked_at":"2026-10-25","values":3,"method":"llm_source_check"},"updated_at":"2026-10-25","type":"protocol","spec":{"transports":["other"],"architecture":"producer_consumer","encoding":"binary","default_ports":[],"data_types":[],"standard_body":"SAE International","standard_ref":"SAE J1939","related":[]},"url":"https://machineschema.com/protocol/j1939","license":"https://creativecommons.org/licenses/by/4.0/"}