{"id":10066,"date":"2026-08-21T18:13:15","date_gmt":"2026-08-21T22:13:15","guid":{"rendered":"https:\/\/cetechsupport.com\/?p=10066"},"modified":"2026-08-21T18:13:15","modified_gmt":"2026-08-21T22:13:15","slug":"code-79-01-usb-drive-fault-27vpa9-only","status":"publish","type":"post","link":"https:\/\/cetechsupport.com\/fr\/code-79-01-usb-drive-fault-27vpa9-only\/","title":{"rendered":"Code 79-01 USB Drive Fault (27VPA9 Only)"},"content":{"rendered":"<div class=\"wp-block-group fault-code-summary is-layout-flow wp-block-group-is-layout-flow\"><div class=\"wp-block-group__inner-container\">\n\n<h2 class=\"wp-block-heading\">Codes de d\u00e9faut couverts<\/h2>\n\n\n<p class=\"wp-block-paragraph\"><strong>79-01<\/strong><\/p>\n\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">This fault is set when the controller is unable to mount or access the USB drive. Conditions include failure to mount the USB drive, failure to switch to the mounted drive, expiration of the mount timer, or inability to open required software files (.bex for PCM or .dat for VFD).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The most likely cause is the USB drive not being fully seated, incompatible, or improperly formatted. It is also possible that the USB drive has missing or corrupted software files<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Remove and re-seat the USB drive. Verify the USB drive is approved, correctly formatted, and contains the required files. Retry the operation with a good USB drive if necessary.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>NOTE: Best results will be obtained by using a USB memory device that is between 4GB and 32GB in size and formatted as a FAT32 device. Any other formatting (NTFS, exFAT, etc.) may result in an error.<\/p><\/blockquote>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><em>Pages de d\u00e9pannage ACHPVSR454-02SM.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Troubleshooting guidance for fault code(s) 79-01.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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79-01.","_links":{"self":[{"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/posts\/10066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/comments?post=10066"}],"version-history":[{"count":1,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/posts\/10066\/revisions"}],"predecessor-version":[{"id":930390,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/posts\/10066\/revisions\/930390"}],"wp:attachment":[{"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/media?parent=10066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/categories?post=10066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cetechsupport.com\/fr\/wp-json\/wp\/v2\/tags?post=10066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}