{"id":17875,"date":"2022-09-28T12:13:24","date_gmt":"2022-09-28T12:13:24","guid":{"rendered":"https:\/\/www.obd2tool.com\/blog\/?p=17875"},"modified":"2022-10-02T12:14:56","modified_gmt":"2022-10-02T12:14:56","slug":"volvo-techtool-121-error-code-when-ecu-programming-solution","status":"publish","type":"post","link":"https:\/\/www.obd2tool.com\/blog\/volvo-techtool-121-error-code-when-ecu-programming-solution\/","title":{"rendered":"Volvo TechTool 121 Error Code When ECU Programming Solution"},"content":{"rendered":"<p>I connect Volvo Tech Tool to the truck and some of the ECUs are missing from the Product Status,what should I do? Here show you guide on how to solve Volvo Tech Tool product status ECUs missing.<\/p>\n<p><img loading=\"lazy\" class=\"alignnone size-full wp-image-17876\" src=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2022\/10\/Volvo-TechTool-121-Error-Code-When-ECU-Programming-Solution.png\" alt=\"\" width=\"851\" height=\"509\" srcset=\"https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2022\/10\/Volvo-TechTool-121-Error-Code-When-ECU-Programming-Solution.png 851w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2022\/10\/Volvo-TechTool-121-Error-Code-When-ECU-Programming-Solution-300x179.png 300w, https:\/\/www.obd2tool.com\/blog\/wp-content\/uploads\/2022\/10\/Volvo-TechTool-121-Error-Code-When-ECU-Programming-Solution-768x459.png 768w\" sizes=\"(max-width: 851px) 100vw, 851px\" \/><\/p>\n<p><strong>Solution:<\/strong><br \/>\nFirst ensure that the key is on, then check the batteries, connections and connect battery charger. Cycle the battery power switch (if equipped) and test the switch.<\/p>\n<p>If problem persists, check to see if this is a truck issue, Tech Tool issue or communication adapter.<br \/>\nIf you are using the <a href=\"https:\/\/www.obd2tool.com\/goods-10214-Original-Volvo-VOCOM-II-88894000-with-APCI-PTT.html\">Volvo Vocom II<\/a>, use the Vocom II Configurator and select Test tab and run the test to see the status of the truck.<br \/>\nThis will help you determine if the truck is the issue.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>I connect Volvo Tech Tool to the truck and some of the ECUs are missing from the Product Status,what should<!-- 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":17877,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2368],"tags":[1913,1907,1908,1909,1910,1906,1911,1915,1912,497,1914,1383,1384,1916],"views":2707,"_links":{"self":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/17875"}],"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=17875"}],"version-history":[{"count":1,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/17875\/revisions"}],"predecessor-version":[{"id":17878,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/posts\/17875\/revisions\/17878"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media\/17877"}],"wp:attachment":[{"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/media?parent=17875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/categories?post=17875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.obd2tool.com\/blog\/wp-json\/wp\/v2\/tags?post=17875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}