{"product_id":"autel-9-pin-j1939-to-16-pin-obd-ii-diagnostic-adapter-compact-passive-converter","title":"Autel 9‑Pin J1939 to 16‑Pin OBD‑II Diagnostic Adapter — Compact Passive Converter","description":"\u003cstrong\u003eAutel's original 9Pin J1939 male to 16Pin OBD2 female adapter converts a J1939 9-pin vehicle port into a standard OBD-II 16-pin socket for diagnostics and fleet devices.\u003c\/strong\u003e\n\nThis compact adapter provides a space-saving bridge between heavy-duty vehicle J1939 systems and common OBD-II scanners or ELD trackers. Designed by Autel for use with diagnostic tools and fleet management equipment, it lets technicians and fleet operators connect OBD-II-compatible devices—such as Autel MaxiSYS and other scan tools—to vehicles equipped with a 9-pin J1939 diagnostic port without rewiring or bulky converters.\n\n\u003ch3\u003eHow does this adapter let my OBD-II scanner work with a 9-pin J1939 port?\u003c\/h3\u003e\n\u003cp\u003eThe adapter presents a female 16-pin OBD-II socket on one side and the J1939 9-pin male on the other, mapping the vehicle’s J1939 signals to the OBD-II connector pinout used by many scanners. It is a passive mechanical converter—no electronics—so it relies on compatible protocols in the vehicle and scanner.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConverts physical connector from J1939 9-pin male to OBD-II 16-pin female\u003c\/li\u003e\n  \u003cli\u003ePass-through for vehicle diagnostic signals when protocols match\u003c\/li\u003e\n  \u003cli\u003eNo internal active circuitry—compact and low-profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich tools and vehicles are compatible with this adapter?\u003c\/h3\u003e\n\u003cp\u003eUse this adapter with heavy-duty trucks and fleet vehicles that have a standard J1939 9-pin diagnostic port. It is intended for OBD-II scanners and fleet management devices that support the vehicle’s protocol—check your scanner’s specifications for J1939 or SAE J1939 compatibility before connecting.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with many J1939-equipped Freightliner and other heavy-duty trucks\u003c\/li\u003e\n  \u003cli\u003eCompatible with Autel MaxiSYS MS909CV, MS908CV and similar OBD-II scanners when protocol matched\u003c\/li\u003e\n  \u003cli\u003eDesigned for diagnostics, ELD tracking, and fleet telematics devices that expect an OBD-II socket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the physical features and warranty details?\u003c\/h3\u003e\n\u003cp\u003eThe adapter is intentionally small to save space in crowded dash areas or diagnostic setups and functions as a connector rather than a cable. Autel backs the product with a one-year warranty and a 30-day return\/replace policy for buyer confidence.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompact, plug-in adapter—not a lengthening cable\u003c\/li\u003e\n  \u003cli\u003eDurable molded housing for frequent connect\/disconnect cycles\u003c\/li\u003e\n  \u003cli\u003e1-year warranty plus 30-day no-reason return and replacement policy\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I confirm it will work with my equipment?\u003c\/h3\u003e\n\u003cp\u003eBefore buying, verify that your vehicle uses the J1939 9-pin diagnostic port and that your scan tool or fleet device supports the J1939 protocol or can read SAE J1939 messages via an OBD-II connector. If uncertain, consult your scanner’s manual or contact Autel support for guidance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConfirm vehicle port type: J1939 9-pin male required\u003c\/li\u003e\n  \u003cli\u003eConfirm scanner or device supports J1939\/SAE J1939 or equivalent\u003c\/li\u003e\n  \u003cli\u003eContact Autel support (autelonline@outlook.com) for compatibility questions\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for\n\nThis adapter is aimed at fleet technicians, heavy-duty truck owners, and mobile diagnosticians who need a reliable, low-profile way to use OBD-II scanners or ELD trackers on vehicles with a J1939 9-pin port. It’s ideal when you want quick, tool-free connections without adding cables or complex electronics—perfect for routine diagnostics, on-the-road troubleshooting, and fleet device installations.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this adapter with any OBD-II scanner?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if the scanner supports the vehicle's J1939 protocol; the adapter only converts the connector, not protocols.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the adapter include a warranty?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — Autel provides a one-year warranty plus a 30-day return or replacement policy.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Autel","offers":[{"title":"Default Title","offer_id":48084958904478,"sku":"B0DF31J5ZN","price":34.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/autel-adapter-front-view_c5dc215b-ee4e-4250-9906-e41f2ed16383.jpg?v=1785865754","url":"https:\/\/northtrailauto.ca\/products\/autel-9-pin-j1939-to-16-pin-obd-ii-diagnostic-adapter-compact-passive-converter","provider":"North Trail Auto","version":"1.0","type":"link"}