{"id":23471,"date":"2025-12-01T12:09:48","date_gmt":"2025-12-01T12:09:48","guid":{"rendered":"https:\/\/www.obd2tool.com\/blog\/?p=23471"},"modified":"2025-12-02T12:56:21","modified_gmt":"2025-12-02T12:56:21","slug":"caterpillar-et-2025b-cat-et-2022a-2019b-electronic-technician-diagnostic-software-complete-overview","status":"publish","type":"post","link":"https:\/\/www.obd2tool.com\/blog\/caterpillar-et-2025b-cat-et-2022a-2019b-electronic-technician-diagnostic-software-complete-overview\/","title":{"rendered":"Caterpillar ET 2025B (CAT ET 2022A\u20132019B) Electronic Technician Diagnostic Software \u2013 Complete Overview"},"content":{"rendered":"<p>Caterpillar Electronic Technician (CAT ET) is the official diagnostic software used to communicate with, test, and service electronically controlled Caterpillar engines and machines. When connected to an ECM, technicians can identify current or potential faults, configure system parameters, and retrieve detailed operating data.<\/p>\n<p>If you work with Caterpillar equipment\u2014on-highway or off-highway\u2014CAT ET is an essential tool. Version CAT ET 2025B v1.0 builds on previous releases with improved stability, better Windows 11 support, and updated drivers.<\/p>\n<ul>\n<li class=\"thumb\"><a href=\"https:\/\/www.obd2tool.com\/goods-6883-Cat-Caterpillar-ET-Software.html\"><img src=\"https:\/\/www.obd2tool.com\/images\/202504\/goods_img\/6883_G_1743502111740.jpg\" alt=\"Cat Caterpillar ET 2025A 2019C Software Caterpillar Electronic Technician With 1 Time Free Activation\" \/><\/a><\/li>\n<li class=\"goodsName\">\n<div class=\"goods-name-text\"><a href=\"https:\/\/www.obd2tool.com\/goods-6883-Cat-Caterpillar-ET-Software.html\"> Cat Caterpillar ET 2025A 2019C Software Caterpillar Electronic Technician With 1 Time Free Activation <\/a><\/div>\n<\/li>\n<\/ul>\n<h2>Table of Contents<\/h2>\n<ul>\n<li>About Caterpillar Electronic Technician 2025B<\/li>\n<li>Important Installation Notice<\/li>\n<li>PC, Communication Hardware &amp; Cable Requirements<\/li>\n<li>Software Download Links<\/li>\n<li>Supported CAT Machines &amp; Engines<\/li>\n<li>Known Errors When Launching the Service Tool<\/li>\n<li>How to Update CAT ET<\/li>\n<li>Version-by-Version Update History<\/li>\n<\/ul>\n<h1>About Caterpillar Electronic Technician 2025B<\/h1>\n<p>CAT ET allows technicians to electronically diagnose and troubleshoot Caterpillar-powered machines. With the software connected to an ECM, users can:<\/p>\n<ul>\n<li>Read and clear diagnostic codes<\/li>\n<li>View real-time engine\/machine parameters<\/li>\n<li>Configure ECM settings<\/li>\n<li>Perform calibrations<\/li>\n<li>Generate Product Status Reports<\/li>\n<li>Monitor system performance<\/li>\n<\/ul>\n<p>CAT ET 2025B replaces earlier versions (2022A, 2021B, 2020A, 2019B, etc.) and introduces improved performance and updated communication support.<\/p>\n<blockquote><p>Need factory passwords?<br \/>\nSee our information on 18-Bit CAT Factory Passwords for unlocking advanced ECM settings.<\/p><\/blockquote>\n<h1>Important Notice \u2013 Installation &amp; Activation<\/h1>\n<p>CAT ET 2025B requires remote installation and activation via TeamViewer.<br \/>\nWe only provide offline activation.<\/p>\n<h3>How to Purchase &amp; Set Up CAT ET<\/h3>\n<ol>\n<li>Click BUY NOW to place your order.<\/li>\n<li>After payment, you\u2019ll receive an email with your software download link.<\/li>\n<\/ol>\n<h1>PC, Communication Hardware &amp; Cable Requirements<\/h1>\n<h2>Important Compatibility Notes<\/h2>\n<ul>\n<li>ARM-based laptops (Snapdragon, Microsoft SQ1) are not supported.<\/li>\n<li>Starting from CAT ET 2020B, Windows 7 is no longer supported.<br \/>\n(Installation may work but stability is not guaranteed.)<\/li>\n<\/ul>\n<h2>Supported Communication Adapters<\/h2>\n<ul>\n<li>Caterpillar Communication Adapter II<\/li>\n<li>Caterpillar Communication Adapter III<\/li>\n<li>Nexiq USB-Link 1\/2\/3 (On-Highway only)<\/li>\n<li>Any RP1210C-compliant adapter, including:\n<ul>\n<li>Noregon DLA+ 2.0<\/li>\n<li>Other compatible adapters (contact us for confirmation)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>PC Requirements for CAT ET 2025<\/h2>\n<ul>\n<li>Dual-core 2.0 GHz processor<\/li>\n<li>4 GB RAM<\/li>\n<li>5 GB free hard disk space<\/li>\n<li>12&#8243; or larger display<\/li>\n<li>Windows 8.1 Pro, Windows 10 Pro, Windows 11 Pro<\/li>\n<li>USB 1.1\/2.0\/3.0 or RS232 (for Adapter II)<\/li>\n<li>Ethernet RJ45 or Wi-Fi<\/li>\n<li>Internet Explorer 11, Edge, Firefox, or Chrome<\/li>\n<\/ul>\n<h1>Software Download Links<\/h1>\n<ul>\n<li>CAT ET 2025A v1.0 (578 MB) \u2013 Download<\/li>\n<li>Comm Adapter 3 Driver V4.7.0.77 (71 MB) \u2013 Download<\/li>\n<\/ul>\n<h1>Supported Caterpillar Engines &amp; Machines<\/h1>\n<h2>Engine Applications<\/h2>\n<ul>\n<li>Electric Power<\/li>\n<li>Power Generation<\/li>\n<li>Industrial<\/li>\n<li>Marine<\/li>\n<li>Oil &amp; Gas<\/li>\n<\/ul>\n<h2>Machine Applications<\/h2>\n<p>Including but not limited to:<\/p>\n<p>Articulated Trucks \u2022 Pavers \u2022 Backhoe Loaders \u2022 Compactors \u2022 Dozers \u2022 Excavators \u2022 Drills \u2022 Feller Bunchers \u2022 Forest Machines \u2022 Harvesters \u2022 Shovels \u2022 Loaders \u2022 Track Loaders \u2022 Telehandlers \u2022 Hard Rock &amp; Longwall Underground \u2022 Utility Vehicles \u2022 Wheel Tractors \u2022 Wheel Loaders \u2022 Scrapers \u2026 and more.<\/p>\n<h1>Error When Launching the Service Tool<\/h1>\n<p>Some users may experience errors such as:<\/p>\n<ul>\n<li>\u201cThe entry point could not be located in api-ms-win-crt-runtime\u201d<\/li>\n<li>\u201cThe program can\u2019t start because mfc140u.dll is missing\u201d<\/li>\n<\/ul>\n<p>These issues are caused by Microsoft Visual C++ Redistributable inconsistencies.<\/p>\n<h3>Fix<\/h3>\n<ol>\n<li>Open Control Panel \u2192 Programs and Features<\/li>\n<li>Locate Microsoft Visual C++ 2015 Redistributable (x86)<\/li>\n<li>Select Change \u2192 Repair<\/li>\n<li>If the issue persists, uninstall it<\/li>\n<li>Install the latest x86 VC Runtime from Microsoft<\/li>\n<li>Re-launch CAT ET<\/li>\n<\/ol>\n<p>If errors continue, contact support.<\/p>\n<h1>FAQ \u2013 How to Update CAT ET<\/h1>\n<p>CAT ET does not support internal self-updating.<br \/>\nTo update:<\/p>\n<ol>\n<li>Order the newest CAT ET revision<\/li>\n<li>Download the installer<\/li>\n<li>Uninstall the old version<\/li>\n<li>Install the new version<\/li>\n<li>Contact us for license activation<\/li>\n<\/ol>\n<h1>Update History \u2013 What\u2019s New in Each Version<\/h1>\n<p>Below is a summarized changelog from 2025B backward.<\/p>\n<h2>CAT ET 2025B<\/h2>\n<ul>\n<li>Added Trainer support for 140-16 Motor Grader<\/li>\n<li>Added Trainer support for 627 Tractor-Scraper<\/li>\n<\/ul>\n<h2>CAT ET 2025A<\/h2>\n<ul>\n<li>No major feature changes<\/li>\n<\/ul>\n<h2>CAT ET 2024C<\/h2>\n<ul>\n<li>Added automatic connection preference controls<\/li>\n<\/ul>\n<h2>CAT ET 2024B<\/h2>\n<ul>\n<li>No major feature updates<\/li>\n<\/ul>\n<h2>CAT ET 2024A<\/h2>\n<ul>\n<li>Flash progress bar now appears on taskbar icon<\/li>\n<li>Trainer: 995 Large Wheel Loader added<\/li>\n<\/ul>\n<h2>CAT ET 2023C<\/h2>\n<ul>\n<li>Default browser settings improved for FPS<\/li>\n<\/ul>\n<h2>CAT ET 2023A<\/h2>\n<ul>\n<li>Updated graphing colors and persistence between sessions<\/li>\n<\/ul>\n<h2>CAT ET 2022C &amp; Earlier<\/h2>\n<ul>\n<li>No major new features<\/li>\n<\/ul>\n<h2>CAT ET 2022B<\/h2>\n<ul>\n<li>New hotkey CTRL + ALT + H to reposition missing windows<\/li>\n<\/ul>\n<h2>CAT ET 2022A<\/h2>\n<ul>\n<li>Windows 11 compatibility verified<\/li>\n<li>ECM replacement file comparison tool added<\/li>\n<li>Improved configuration group headings<\/li>\n<\/ul>\n<h2>CAT ET 2021C<\/h2>\n<ul>\n<li>FPS copy\/paste enhancements<\/li>\n<li>Updated screen resolution requirements<\/li>\n<\/ul>\n<h2>CAT ET 2021B<\/h2>\n<ul>\n<li>End of Windows 8 support<\/li>\n<li>Calibration images now load automatically<\/li>\n<li>Browser defaults updated<\/li>\n<\/ul>\n<h2>CAT ET 2021A<\/h2>\n<ul>\n<li>No major changes<\/li>\n<\/ul>\n<h2>CAT ET 2020C<\/h2>\n<ul>\n<li>No major changes<\/li>\n<\/ul>\n<h2>CAT ET 2020B<\/h2>\n<ul>\n<li>Trainer: 299D3 Skid Steer Loader<\/li>\n<\/ul>\n<h2>CAT ET 2020A<\/h2>\n<ul>\n<li>Updated Product Status Reports<\/li>\n<li>Experimental factory password generator (no 18-bit support)<\/li>\n<\/ul>\n<h2>CAT ET 2019C<\/h2>\n<ul>\n<li>Displays selected communications adapter<\/li>\n<li>End of Windows 7 support<\/li>\n<\/ul>\n<h2>CAT ET 2019B<\/h2>\n<ul>\n<li>Automatic PSR upload feature<\/li>\n<\/ul>\n<h2>CAT ET 2019A<\/h2>\n<ul>\n<li>ECM naming changes and incomplete link indicator<\/li>\n<\/ul>\n<h2>CAT ET 2018C \/ 2018B<\/h2>\n<ul>\n<li>CEOS Fleet Configuration File support<\/li>\n<\/ul>\n<h2>CAT ET 2018A<\/h2>\n<ul>\n<li>Trainer: 988K XE Wheel Loader<\/li>\n<\/ul>\n<h2>CAT ET 2017C<\/h2>\n<ul>\n<li>Option to automatically save PSR as PDF<\/li>\n<\/ul>\n<h2>CAT ET 2017B<\/h2>\n<ul>\n<li>PSR updates and WinFlash UI improvements<\/li>\n<\/ul>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Caterpillar Electronic Technician (CAT ET) is the official diagnostic software used to communicate with, test, and service electronically controlled Caterpillar<!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":1,"featured_media":23472,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3224],"tags":[1334,3879],"views":832,"_links":{"self":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23471"}],"collection":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/comments?post=23471"}],"version-history":[{"count":4,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23471\/revisions"}],"predecessor-version":[{"id":23481,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/23471\/revisions\/23481"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media\/23472"}],"wp:attachment":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media?parent=23471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/categories?post=23471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/tags?post=23471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}