{"id":519053,"date":"2025-12-11T05:17:55","date_gmt":"2025-12-11T10:17:55","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/"},"modified":"2025-12-11T05:17:55","modified_gmt":"2025-12-11T10:17:55","slug":"dtc-u0071-vehicle-communication-bus-e-high","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/","title":{"rendered":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &#038; Safety Tips"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">U0071<\/div>\n<h1>U0071 Code Symptoms, Diagnostic Steps, Repair Costs &amp; Safety Tips<\/h1>\n<p class=\"hero-subtitle\">\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>U0071 = Vehicle Communication Bus E (\u2011) High \u2013 the E\u2011bus voltage exceeds its normal range. <\/li>\n<li>Drivers notice exterior\u2011lighting loss, door\u2011lock or window\u2011control failures, and a communication\u2011related warning lamp. <\/li>\n<li>Primary causes are wiring shorts, connector corrosion, or a malfunctioning control module (BCM\/TIPM\/TCM). <\/li>\n<li>Diagnosis requires a scan tool, bus\u2011voltage measurement, and module communication tests. <\/li>\n<li>Replacement modules cost $600\u2011$900 plus $200\u2011$300 labor; Flagship One provides VIN\u2011matched, pre\u2011programmed units. <\/li>\n<\/ul>\n<\/div>\n<p>When the Vehicle Communication Bus E (\u2011) voltage climbs above its design limit, the power\u2011train and body\u2011control networks lose the ability to exchange data. Most drivers first see a cluster warning lamp illuminate, followed by one or more BCM\u2011managed functions that stop working. Because the fault is rooted in the communication backbone, the problem can affect multiple systems at once, making early detection essential.<\/p>\n<h2>Symptoms <\/h2>\n<ul>\n<li><strong>Communication\u2011related warning lamp<\/strong> (often a \u201cCAN\u201d or \u201cNetwork\u201d icon) stays illuminated on the instrument panel. <\/li>\n<li><strong>Exterior lighting failure<\/strong> \u2013 headlights, taillights, or parking\u2011lamp circuits dim or remain off. <\/li>\n<li><strong>Door\u2011lock or window\u2011control loss<\/strong> \u2013 power\u2011lock buttons, remote\u2011key fob lock\/unlock, and automatic window switches become unresponsive. <\/li>\n<li><strong>Interior lighting anomalies<\/strong> \u2013 dome light or courtesy lights flicker or stay dark. <\/li>\n<li><strong>HVAC or infotainment glitches<\/strong> \u2013 climate\u2011control buttons or touchscreen functions may stop responding when the bus voltage is out of range. <\/li>\n<\/ul>\n<p>These signs appear together or individually, depending on which modules rely on the E\u2011bus for power and data.<\/p>\n<h2>Why Communication Bus E (\u2011) Problems Occur <\/h2>\n<h3>Faulty Wiring or Ground Connections <\/h3>\n<p>A short to voltage on the E\u2011bus harness, damaged insulation, or a corroded ground can push the bus voltage high. The bus is designed for a nominal 5 V \u00b1 0.5 V; any sustained rise above ~5.5 V triggers U0071.<\/p>\n<h3>Connector Corrosion or Loose Pins <\/h3>\n<p>Repeated exposure to moisture, road salt, or vibration can degrade connector contacts. Poor contact resistance creates voltage spikes that the bus controller interprets as a high\u2011voltage condition.<\/p>\n<h3>Malfunctioning Control Module <\/h3>\n<p>The Body Control Module (BCM), Power\u2011train Interface Module (TIPM), or other network masters contain voltage regulation circuitry. Internal component failure (e.g., a blown regulator or damaged microcontroller) can feed excess voltage onto the E\u2011bus.<\/p>\n<h3>Software Glitches or Improper Calibration <\/h3>\n<p>Incorrect firmware versions may misinterpret normal voltage transients as faults, especially after a module reflash or after a recall\u2011related update.<\/p>\n<h3>Aftermarket Accessories <\/h3>\n<p>Non\u2011OEM accessories that tap the E\u2011bus without proper isolation (e.g., aftermarket lighting kits) can introduce voltage irregularities that set off the U0071 condition.<\/p>\n<h2>Diagnostic and Repair Procedures <\/h2>\n<ol>\n<li><strong>Retrieve the DTC<\/strong> \u2013 Connect a manufacturer\u2011specific scan tool and read all stored codes. Confirm U0071 and note any accompanying network codes (U0100, U0140, etc.).\n<\/li>\n<li><strong>Inspect the E\u2011bus harness<\/strong> \u2013 Visually examine the wiring for chafing, exposed conductors, or heat damage. Pay special attention to the sections running through the engine bay and under the dash.\n<\/li>\n<li><strong>Measure bus voltage<\/strong> \u2013 With the ignition ON and the engine OFF, probe the E\u2011bus reference pin (usually 5 V) using a digital multimeter. Voltage should read 5.0 V \u00b1 0.5 V. Any reading above 5.5 V confirms the \u201chigh\u201d condition.\n<\/li>\n<li><strong>Check grounds<\/strong> \u2013 Verify that the chassis ground strap associated with the bus is clean, tight, and free of corrosion. A poor ground can cause voltage elevation.\n<\/li>\n<li><strong>Test individual modules<\/strong> \u2013 Using the scan tool, command a \u201ccommunication test\u201d for each module on the E\u2011bus (BCM, TIPM, TCM, etc.). A failure to respond indicates a likely culprit.\n<\/li>\n<li><strong>Repair wiring or connectors<\/strong> \u2013 Replace damaged sections, clean corroded pins with contact cleaner, and reseat connectors. Re\u2011measure bus voltage after each repair.\n<\/li>\n<li><strong>Reprogram or update firmware<\/strong> \u2013 If the voltage is normal but the fault persists, flash the affected module with the latest OEM software. Verify that the module\u2019s calibration matches the vehicle\u2019s VIN.\n<\/li>\n<li><strong>Replace the faulty module<\/strong> \u2013 When a module consistently fails communication tests or continues to drive the bus voltage high after wiring repairs, replacement is warranted.\n<\/li>\n<\/ol>\n<p>Typical labor for a full diagnostic session ranges from $120 to $180. Wiring repairs average $80\u2011$150 per circuit, while a module reflash costs $90\u2011$130.<\/p>\n<h2>When Replacement Makes Sense <\/h2>\n<div class=\"flagship-logo-section\">\n<a href=\"https:\/\/www.fs1inc.com\/\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" alt=\"Flagship One\" class=\"flagship-logo\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\"\/><br \/>\n<\/a>\n<\/div>\n<p>If the diagnostic sequence isolates a defective control module that continues to push the E\u2011bus voltage high despite repaired wiring and updated software, replacement becomes the most reliable solution. Repairing a compromised board often provides only a temporary fix, especially when moisture ingress or internal component fatigue is involved. <\/p>\n<p>Modern control modules are complex and integrated with security and immobilizer systems. That&#8217;s why choosing a replacement isn&#8217;t only about the hardware\u2014it&#8217;s about correct programming and compatibility. <strong>Flagship One<\/strong> specializes in VIN\u2011matched control modules, providing a plug\u2011and\u2011drive solution backed by warranty. Replacement units vary depending on production date and software version, so the correct module is matched by VIN before programming, ensuring seamless integration with your vehicle\u2019s network.<\/p>\n<h2>Preventive Maintenance <\/h2>\n<ul>\n<li><strong>Regularly clean connector terminals<\/strong> \u2013 Use a soft brush and electrical contact cleaner during routine under\u2011hood inspections. <\/li>\n<li><strong>Inspect wiring harnesses<\/strong> \u2013 Look for signs of abrasion, especially where the harness passes through protective grommets. Replace any compromised sections promptly. <\/li>\n<li><strong>Protect against moisture<\/strong> \u2013 Apply dielectric grease to high\u2011risk connectors and ensure drainage holes around the BCM\/TIPM are clear. <\/li>\n<li><strong>Avoid unqualified aftermarket accessories<\/strong> \u2013 Ensure any added devices are designed to interface with the vehicle\u2019s bus without drawing power directly from the E\u2011bus. <\/li>\n<li><strong>Schedule periodic network scans<\/strong> \u2013 A professional scan every 12\u201118 months can catch emerging voltage irregularities before they trigger a DTC.<\/li>\n<\/ul>\n<div class=\"info-section\">\n<p><strong>Service Recommendation:<\/strong> Most issues related to this fault are diagnosed and corrected through inspection, wiring repair, and calibration rather than module replacement. For modules not typically replaced through aftermarket suppliers, diagnosis and repair should be performed by a certified automotive technician with access to factory service information and tooling.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Flickering lights or loss of electronics on your vehicle? A high Vehicle Communication Bus E (-) can fry modules. Scan, check wiring, reprogram or replace.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-519053","post","type-post","status-publish","format-standard","hentry","category-auto-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>U0071 Code Symptoms, Diagnostic Steps, Repair Costs &amp; Safety Tips - Flagship One Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &amp; Safety Tips - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Flickering lights or loss of electronics on your vehicle? A high Vehicle Communication Bus E (-) can fry modules. Scan, check wiring, reprogram or replace.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-11T10:17:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &#038; Safety Tips\",\"datePublished\":\"2025-12-11T10:17:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/\"},\"wordCount\":972,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"articleSection\":[\"Auto News\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/\",\"name\":\"U0071 Code Symptoms, Diagnostic Steps, Repair Costs & Safety Tips - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"datePublished\":\"2025-12-11T10:17:55+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"width\":2560,\"height\":617},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-u0071-vehicle-communication-bus-e-high\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &#038; Safety Tips\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. OEM Engine Computers  Control Modules\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\",\"name\":\"Flagship One, Inc.\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"width\":1341,\"height\":1098,\"caption\":\"Flagship One, Inc.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/flagshipone\",\"https:\\\/\\\/x.com\\\/theflagshipone\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC0oyKphffBM2qkJ-gKPmMXw\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\",\"name\":\"FlagshipOne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"caption\":\"FlagshipOne\"},\"description\":\"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.\",\"sameAs\":[\"https:\\\/\\\/www.fs1inc.com\\\/\",\"https:\\\/\\\/www.facebook.com\\\/flagshipone\\\/\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/fs1inc\"],\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/author\\\/flagship1inc\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs & Safety Tips - Flagship One Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/","og_locale":"en_US","og_type":"article","og_title":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs & Safety Tips - Flagship One Blog","og_description":"Flickering lights or loss of electronics on your vehicle? A high Vehicle Communication Bus E (-) can fry modules. Scan, check wiring, reprogram or replace.","og_url":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2025-12-11T10:17:55+00:00","og_image":[{"url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","type":"","width":"","height":""}],"author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &#038; Safety Tips","datePublished":"2025-12-11T10:17:55+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/"},"wordCount":972,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","articleSection":["Auto News"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/","url":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/","name":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs & Safety Tips - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","datePublished":"2025-12-11T10:17:55+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#primaryimage","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","width":2560,"height":617},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-u0071-vehicle-communication-bus-e-high\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"U0071 Code Symptoms, Diagnostic Steps, Repair Costs &#038; Safety Tips"}]},{"@type":"WebSite","@id":"https:\/\/www.fs1inc.com\/blog\/#website","url":"https:\/\/www.fs1inc.com\/blog\/","name":"Flagship One Blog","description":"Flagship One Inc. OEM Engine Computers  Control Modules","publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fs1inc.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fs1inc.com\/blog\/#organization","name":"Flagship One, Inc.","url":"https:\/\/www.fs1inc.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","width":1341,"height":1098,"caption":"Flagship One, Inc."},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/flagshipone","https:\/\/x.com\/theflagshipone","https:\/\/www.instagram.com\/flagship_one","https:\/\/www.youtube.com\/channel\/UC0oyKphffBM2qkJ-gKPmMXw"]},{"@type":"Person","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700","name":"FlagshipOne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","caption":"FlagshipOne"},"description":"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.","sameAs":["https:\/\/www.fs1inc.com\/","https:\/\/www.facebook.com\/flagshipone\/","https:\/\/www.instagram.com\/flagship_one\/","https:\/\/www.linkedin.com\/company\/fs1inc"],"url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/"}]}},"_links":{"self":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/519053","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/comments?post=519053"}],"version-history":[{"count":0,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/519053\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=519053"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=519053"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=519053"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}