{"id":75298,"date":"2025-11-02T21:14:48","date_gmt":"2025-11-02T13:14:48","guid":{"rendered":"https:\/\/hongtronics.com\/?p=75298"},"modified":"2026-03-16T09:53:07","modified_gmt":"2026-03-16T01:53:07","slug":"obd-ii-dtc-diagnostics-guide","status":"publish","type":"post","link":"https:\/\/hongtronics.com\/en\/obd-ii-dtc-diagnostics-guide\/","title":{"rendered":"Honghong Shares\uff5cFrom OBD-II to DTC Fault Codes: How in-vehicle diagnostic systems are changing the standard of automotive maintenance and communication"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"75298\" class=\"elementor elementor-75298\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-add9a0e e-flex e-con-boxed e-con e-parent\" data-id=\"add9a0e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-353e6ef elementor-widget elementor-widget-heading\" data-id=\"353e6ef\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">preamble<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-80c3d4a e-flex e-con-boxed e-con e-parent\" data-id=\"80c3d4a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-25ddef0 elementor-widget elementor-widget-text-editor\" data-id=\"25ddef0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">Today, with the rapid development of automobile electronics and intelligence, the<span style=\"color: #000080;\"><strong data-start=\"162\" data-end=\"180\">On-Board Diagnostics (OBD-II)<\/strong><\/span> It has become the common language of automotive repair and emissions monitoring.<\/span><br data-start=\"199\" data-end=\"202\" \/><span style=\"color: #000000; font-size: 12pt;\">From the blinking of the engine malfunction warning light to the return of data from the cloud-based car network, OBD-II plays the role of a \"vehicle health management hub\".<\/span><br data-start=\"250\" data-end=\"253\" \/><span style=\"color: #000000; font-size: 12pt;\">Mastery of this standard helps engineers and maintenance personnel pinpoint problems more accurately, and lays the foundation for fleet management, intelligent transportation and autonomous driving.<\/span><span style=\"color: #000000; font-size: 12pt;\">This article will bring you an in-depth understanding of the OBD-II architecture, communication principles and diagnostic trouble code (DTC) analysis, as well as a review of the evolution of the standard and its practical applications.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-822a67c e-flex e-con-boxed e-con e-parent\" data-id=\"822a67c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0e15447 elementor-widget elementor-widget-image\" data-id=\"0e15447\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"836\" height=\"469\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car.jpg\" class=\"attachment-large size-large wp-image-75366\" alt=\"\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car.jpg 836w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car-300x168.jpg 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car-768x431.jpg 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car-800x450.jpg 800w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car-600x337.jpg 600w\" sizes=\"(max-width: 836px) 100vw, 836px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7d8f8d6 e-flex e-con-boxed e-con e-parent\" data-id=\"7d8f8d6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-05cf2c8 elementor-widget elementor-widget-heading\" data-id=\"05cf2c8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">OBD-II On-Board Diagnostic System Overview<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-adb944a e-flex e-con-boxed e-con e-parent\" data-id=\"adb944a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-507fd0f elementor-widget elementor-widget-text-editor\" data-id=\"507fd0f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">OBD (On-Board Diagnostics.<span style=\"color: #000080;\"><strong data-start=\"355\" data-end=\"365\">In-vehicle diagnostic system<\/strong><\/span>It is an electronic self-monitoring and troubleshooting system built into the vehicle to monitor the operation of key components such as the engine, transmission, emissions and electronic control unit (ECU).<\/span><br data-start=\"425\" data-end=\"428\" \/><span style=\"color: #000000; font-size: 12pt;\">By communicating with the ECU (Electronic Control Unit), service personnel can quickly determine the location and cause of a malfunction. Common ECUs include Engine Control Module (ECM), Transmission Control Module (TCM), Electronic Brake Control Module (EBCM), and so on.<\/span><br data-start=\"514\" data-end=\"517\" \/><span style=\"color: #000000; font-size: 12pt;\">With the OBD system, owners and technicians can detect anomalies in real time, reduce emissions and improve maintenance efficiency.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc199c7 e-flex e-con-boxed e-con e-parent\" data-id=\"bc199c7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b08592e elementor-widget elementor-widget-heading\" data-id=\"b08592e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Emission Control and the Birth of OBD Standards<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0fc8b13 e-flex e-con-boxed e-con e-parent\" data-id=\"0fc8b13\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a2fac0 elementor-widget elementor-widget-text-editor\" data-id=\"2a2fac0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">The U.S. Environmental Protection Agency (EPA) has set emissions standards under the Clean Air Act, and the California Air Resources Board (CARB) has pushed for OBD regulations to force automakers to install self-diagnosing electronic control systems in vehicles.<\/span><br data-start=\"658\" data-end=\"661\" \/><span style=\"color: #000000; font-size: 12pt;\">Since 1996, all light vehicles in the U.S. have been required to carry <span style=\"color: #000080;\"><strong data-start=\"681\" data-end=\"694\">OBD-II System<\/strong><\/span>Since 2005, heavy vehicles have also been fully included. This set of standards was subsequently adopted by Europe and Mainland China, and has become a global standard.<span style=\"color: #000080;\"><strong data-start=\"739\" data-end=\"753\">Vehicle Troubleshooting Protocol<\/strong><\/span>\u3002<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bf3ca5e e-flex e-con-boxed e-con e-parent\" data-id=\"bf3ca5e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c1e64e5 elementor-widget elementor-widget-image\" data-id=\"c1e64e5\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-1024x576.jpg\" class=\"attachment-large size-large wp-image-75367\" alt=\"\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-1024x576.jpg 1024w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-300x169.jpg 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-768x432.jpg 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-800x450.jpg 800w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2-600x337.jpg 600w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car2.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d03a99 e-flex e-con-boxed e-con e-parent\" data-id=\"5d03a99\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5bb6ce0 elementor-widget elementor-widget-heading\" data-id=\"5bb6ce0\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">OBD development and OBD-II features<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-516f521 e-flex e-con-boxed e-con e-parent\" data-id=\"516f521\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cf22b4b elementor-widget elementor-widget-text-editor\" data-id=\"cf22b4b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">Early OBDs only provided simple feedback through dashboard warning lights and could not pinpoint the source of the problem. As the technology evolved, OBD-II was officially launched in 1994, using a standardized<span style=\"color: #000080;\"><strong data-start=\"845\" data-end=\"862\">16-Pin Diagnostic Port (DLC)<\/strong><\/span>It supports real-time data monitoring and fault code reporting.<\/span><span style=\"color: #000000; font-size: 12pt;\">OBD-II monitors not only the engine, but also the chassis, body electronics and ancillary equipment through the<span style=\"color: #000080;\"><strong data-start=\"915\" data-end=\"929\">CAN bus protocol<\/strong><\/span>Efficient data exchange allows technicians to quickly access vehicle diagnostic information with scanning tools.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-cf3f9c1 e-flex e-con-boxed e-con e-parent\" data-id=\"cf3f9c1\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bf839b2 elementor-widget elementor-widget-heading\" data-id=\"bf839b2\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">OBD-II Standard and Diagnostic Protocols<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bf3ff6e e-flex e-con-boxed e-con e-parent\" data-id=\"bf3ff6e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-756b919 elementor-widget elementor-widget-image\" data-id=\"756b919\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-1024x576.jpg\" class=\"attachment-large size-large wp-image-75368\" alt=\"\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-1024x576.jpg 1024w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-300x169.jpg 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-768x432.jpg 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-800x450.jpg 800w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3-600x337.jpg 600w, https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/11\/kvaser-car3.jpg 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-36480e8 e-flex e-con-boxed e-con e-parent\" data-id=\"36480e8\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b7fab93 elementor-widget elementor-widget-text-editor\" data-id=\"b7fab93\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">The OBD-II standard defines the communication methods, data codes and signaling protocols between the vehicle and external diagnostic equipment according to ISO 15031.<\/span><br data-start=\"1038\" data-end=\"1041\" \/><span style=\"color: #000000; font-size: 12pt;\">This specification ensures that the OBD-II port provides vehicle operational data in a uniform format, such as engine speed, emissions status and fuel system information.<\/span><span style=\"color: #000000; font-size: 12pt;\">The diagnostic ports are divided into<\/span><span style=\"color: #000080;\"> <span style=\"font-size: 12pt;\"><strong data-start=\"1102\" data-end=\"1115\">Type A (12V vehicle)<\/strong><\/span><\/span><span style=\"color: #000000; font-size: 12pt;\"> \u8207 <span style=\"color: #000080;\"><strong data-start=\"1118\" data-end=\"1131\">Type B (24V vehicle)<\/strong><\/span>It facilitates the standardization of maintenance procedures by vehicle manufacturers around the world.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2597df e-flex e-con-boxed e-con e-parent\" data-id=\"e2597df\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f606bba elementor-widget elementor-widget-heading\" data-id=\"f606bba\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Diagnostic Troubleshooting Code (DTC) Structure and Examples<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dcecf44 e-flex e-con-boxed e-con e-parent\" data-id=\"dcecf44\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6339405 elementor-widget elementor-widget-text-editor\" data-id=\"6339405\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p data-start=\"1173\" data-end=\"1243\"><span style=\"color: #000000; font-size: 12pt;\">DTC (Diagnostic Trouble Code.<span style=\"color: #000080;\"><strong data-start=\"1201\" data-end=\"1210\">Troubleshooting Code<\/strong><\/span>) is the heart of the OBD-II system. Each five-digit code identifies the location and type of problem:<\/span><\/p><ul data-start=\"1244\" data-end=\"1351\"><li data-start=\"1244\" data-end=\"1274\"><p data-start=\"1246\" data-end=\"1274\"><span style=\"color: #000000; font-size: 12pt;\"><span style=\"color: #000080;\"><strong data-start=\"1246\" data-end=\"1255\">Pxxxx<\/strong><\/span>: Powertrain<\/span><\/p><\/li><li data-start=\"1275\" data-end=\"1297\"><p data-start=\"1277\" data-end=\"1297\"><span style=\"color: #000000; font-size: 12pt;\"><span style=\"color: #000080;\"><strong data-start=\"1277\" data-end=\"1286\">Bxxxx<\/strong><\/span>Body<\/span><\/p><\/li><li data-start=\"1298\" data-end=\"1323\"><p data-start=\"1300\" data-end=\"1323\"><span style=\"color: #000000; font-size: 12pt;\"><span style=\"color: #000080;\"><strong data-start=\"1300\" data-end=\"1309\">Cxxxx<\/strong><\/span>: Chassis<\/span><\/p><\/li><li data-start=\"1324\" data-end=\"1351\"><p data-start=\"1326\" data-end=\"1351\"><span style=\"color: #000000; font-size: 12pt;\"><span style=\"color: #000080;\"><strong data-start=\"1326\" data-end=\"1335\">Uxxxx<\/strong><\/span>: Communications Network (Network)<\/span><\/p><\/li><\/ul><p data-start=\"1353\" data-end=\"1418\"><span style=\"color: #000000; font-size: 12pt;\">The second digit represents the common or manufacturer's customization, and the third digit indicates the subsystems, e.g., \"3\" is the ignition system, \"4\" is the emission system, and \"7\" and \"8\" are the transmission systems.<\/span><span style=\"color: #000000; font-size: 12pt;\">Common examples are as follows:<\/span><\/p><ul data-start=\"1419\" data-end=\"1484\"><li data-start=\"1419\" data-end=\"1440\"><p data-start=\"1421\" data-end=\"1440\"><span style=\"color: #000000; font-size: 12pt;\">P0112: Air inlet temperature sensor signal too low<\/span><\/p><\/li><li data-start=\"1441\" data-end=\"1461\"><p data-start=\"1443\" data-end=\"1461\"><span style=\"color: #000000; font-size: 12pt;\">P0410: Secondary Air Injection System Failure<\/span><\/p><\/li><li data-start=\"1462\" data-end=\"1484\"><p data-start=\"1464\" data-end=\"1484\"><span style=\"color: #000000; font-size: 12pt;\">P0710: Transmission Oil Temperature Sensor Circuit Error<\/span><\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d601c5a e-flex e-con-boxed e-con e-parent\" data-id=\"d601c5a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fbf9d23 elementor-widget elementor-widget-heading\" data-id=\"fbf9d23\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Application and Future Development of OBD-II<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13e40c8 e-flex e-con-boxed e-con e-parent\" data-id=\"13e40c8\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c247f6 elementor-widget elementor-widget-text-editor\" data-id=\"0c247f6\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">In addition to emissions monitoring, the OBD-II interface is now widely used in fleet management, fuel efficiency analysis, ADAS-assisted driving, smart car networking, and more.<\/span><br data-start=\"1563\" data-end=\"1566\" \/><span style=\"color: #000000; font-size: 12pt;\">With OBD-II data, vehicle manufacturers and system integrators can instantly track vehicle status, perform preventive maintenance and analyze data to further promote<span style=\"color: #000080;\"><strong data-start=\"1613\" data-end=\"1630\">Development of Smart Cars and Telematics<\/strong><\/span>\u3002<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a6caad8 e-flex e-con-boxed e-con e-parent\" data-id=\"a6caad8\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ff1857d elementor-widget elementor-widget-text-editor\" data-id=\"ff1857d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"color: #000000; font-size: 12pt;\">Since the 1980s, Kvaser has been deeply engaged in the research and development of CAN bus and automotive communication technologies, and has continued to promote the innovation of M2M (Machine to Machine) and in-vehicle network standards, and is still one of the world's leading CAN technology providers.<\/span><span style=\"color: #000000; font-size: 12pt;\">As Kvaser's technology partner in Taiwan, MAXTRONIC has been committed to bringing its expertise and products to the local industry in a wide range of applications, including vehicle diagnostics, EV testing, in-vehicle communication simulation, and education and training.<\/span><\/p><p><br data-start=\"330\" data-end=\"333\" \/><span style=\"color: #000000; font-size: 12pt;\">We hope that by promoting the knowledge of OBD-II, CAN, LIN, and Ethernet automotive communication technologies, we can help engineers, researchers, and educational institutions to more effectively grasp the core principles of in-vehicle network diagnostics, and accelerate the development of Taiwan's intelligent car electrics and automated driving technologies.<\/span><\/p><p style=\"text-align: center;\">This article was rewritten from Kvaser<a href=\"https:\/\/mp.weixin.qq.com\/s\/Hhly1CP8f4hefW2nF5j8vg\">WeChat:K\u8ab2\u5802 | Comprehensive Analysis of Automotive Self-Diagnostic Standard OBD-II (with Detailed Diagnostic Troubleshooting Code DTC)<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-846ec8d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"846ec8d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d70c575\" data-id=\"d70c575\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c5f21d2 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"c5f21d2\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a31792 e-transform elementor-widget elementor-widget-text-editor\" data-id=\"4a31792\" data-element_type=\"widget\" data-settings=\"{&quot;_transform_rotateZ_effect&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_tablet&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;_transform_rotateZ_effect_mobile&quot;:{&quot;unit&quot;:&quot;deg&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 14pt; color: #273171;\"><strong>If you are interested, you are welcome to follow us for more information on this article.<a href=\"https:\/\/line.me\/R\/ti\/p\/@433rhnwm\"><span style=\"color: #ff0000;\">If you have any questions, please feel free to contact us!<\/span><\/a><\/strong><\/span><\/p><footer class=\"product-footer\"><div class=\"additional-info\"><div class=\"related-articles\"><h3><span style=\"color: #000000;\">Extended Reading<\/span><span style=\"color: #000000; font-size: 16px;\">Read:<\/span><\/h3><p style=\"padding-left: 40px;\"><a style=\"color: #13aff0; text-decoration-style: dotted; text-decoration-skip-ink: none;\" href=\"https:\/\/hongtronics.com\/en\/kvaser-airbridge-wireless-can-analysis-com\/\"><span style=\"font-size: 12pt; color: #3498db;\">\u27a4 Macrohon Shares | Is Wireless CAN a Better Choice? An in-depth analysis of the Kvaser Air Bridge pairing mechanism and application potential.<\/span><\/a><\/p><p style=\"padding-left: 40px;\"><a style=\"color: #13aff0; text-decoration-style: dotted; text-decoration-skip-ink: none;\" href=\"https:\/\/hongtronics.com\/en\/kvaser-can-fd-endurance-testing-com\/\"><span style=\"font-size: 12pt; color: #3498db;\">\u27a4 Macronix Shares | Kvaser CAN FD Module Helps Audi Improve Durability Test Performance with 100,000 Hours of Test Data!<\/span><\/a><\/p><\/div><\/div><\/footer>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9be200 elementor-widget elementor-widget-image\" data-id=\"f9be200\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"197\" src=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1.png\" class=\"attachment-large size-large wp-image-40098\" alt=\"\" srcset=\"https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1.png 1024w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-300x58.png 300w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-768x148.png 768w, https:\/\/hongtronics.com\/wp-content\/uploads\/2024\/06\/\u516c\u53f8\u8cc7\u8a0a\u6b04_\u8cc7\u8a0a\u5361-\u592702-1-600x115.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u524d\u8a00 \u5728\u6c7d\u8eca\u96fb\u5b50\u5316\u8207\u667a\u6167\u5316\u9ad8\u901f\u767c\u5c55\u7684\u4eca\u65e5\uff0c\u8eca\u8f09\u8a3a\u65b7\u7cfb\u7d71\uff08OBD-II\uff09 \u5df2\u6210\u70ba\u6c7d\u8eca\u7dad\u4fee\u8207\u6392\u653e\u76e3\u63a7\u7684\u5171\u540c\u8a9e\u8a00\u3002\u5f9e [&hellip;]<\/p>","protected":false},"author":46,"featured_media":75307,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"","ocean_second_sidebar":"","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"","ocean_center_header_left_menu":"","ocean_custom_header_template":"","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"","ocean_menu_typo_font_family":"","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"","iawp_total_views":224,"ocean_post_oembed":"","ocean_post_self_hosted_media":"","ocean_post_video_embed":"","ocean_link_format":"","ocean_link_format_target":"self","ocean_quote_format":"","ocean_quote_format_link":"post","ocean_gallery_link_images":"on","ocean_gallery_id":[],"footnotes":""},"categories":[2293],"tags":[1915,3173,2786,1299,376],"table_tags":[],"class_list":["post-75298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-can-lin","tag-can-bus","tag-can-","tag-canbus","tag-kvaser","tag-376","entry","has-media","owp-thumbs-layout-horizontal","owp-btn-normal","owp-tabs-layout-horizontal","has-no-thumbnails","has-product-nav"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/hongtronics.com\/wp-content\/uploads\/2025\/10\/kvaser-car.jpg","_links":{"self":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/75298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/users\/46"}],"replies":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/comments?post=75298"}],"version-history":[{"count":17,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/75298\/revisions"}],"predecessor-version":[{"id":81670,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/posts\/75298\/revisions\/81670"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/media\/75307"}],"wp:attachment":[{"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/media?parent=75298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hongtronics.com\/en\/wp-json\/wp\/v2\/categories?post=75298"},{"taxonomy":"post_tag","embeddable":tru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