{"id":77902,"date":"2025-08-26T11:17:59","date_gmt":"2025-08-26T16:17:59","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77902"},"modified":"2025-08-26T11:17:59","modified_gmt":"2025-08-26T16:17:59","slug":"p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck","title":{"rendered":"P0590 OBD2: Cruise Control Multi-Function Input &#8220;B&#8221; Circuit Stuck"},"content":{"rendered":"<p>The P0590 code is an OBD-II trouble code that indicates a problem with the cruise control system in your vehicle. Specifically, it refers to the Cruise Control Multi-Function Input &#8220;B&#8221; Circuit being stuck, which prevents proper operation of the cruise control feature.<\/p>\n<h2>What Does the P0590 Code Mean?<\/h2>\n<p>The P0590 code is triggered when the Powertrain Control Module (PCM) detects a fault in the cruise control system&#8217;s input switches. These switches are responsible for sending signals to the PCM to control various functions of the cruise control. If the PCM sees conflicting signals from more than one switch simultaneously, it will set the P0590 code, rendering the cruise control inoperable.<\/p>\n<h2>What Causes the P0590 Code?<\/h2>\n<ul>\n<li>Cruise control switch failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues within the cruise control system<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0590 Code?<\/h2>\n<ul>\n<li>Inability to engage cruise control<\/li>\n<li>Illumination of the check engine light<\/li>\n<\/ul>\n<h2>How Serious Is the P0590 Code?<\/h2>\n<p>The P0590 code falls under moderate severity. While it may not pose an immediate threat to the vehicle&#8217;s safety or functionality, it is advisable to have it diagnosed in a timely manner. Ignoring the issue could lead to further complications with the cruise control system or related components.<\/p>\n<h2>How to Diagnose the P0590 Code<\/h2>\n<p>To properly diagnose the P0590 code, a certified mechanic will typically follow these steps:<\/p>\n<ul>\n<li>Use an OBD-II scanner to confirm the presence of the P0590 code and check for any additional codes.<\/li>\n<li>Inspect the cruise control switches and wiring for any visible damage or corrosion.<\/li>\n<li>Test the cruise control switches for proper functionality.<\/li>\n<li>Check the Powertrain Control Module (PCM) for faults or updates.<\/li>\n<\/ul>\n<h2>Common Repairs for the P0590 Code<\/h2>\n<ul>\n<li>Replacing faulty cruise control switches<\/li>\n<li>Repairing or replacing damaged wiring<\/li>\n<li>Reprogramming or replacing the PCM if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0590 Code?<\/h2>\n<p>The cost to repair the P0590 code can vary significantly based on the underlying cause. On average, repairs may range from $100 to $400, depending on whether it involves simple switch replacement or more extensive electrical work.<\/p>\n<h2>Can I Fix the P0590 Code Myself?<\/h2>\n<p>If you have experience with automotive repairs and access to the necessary tools, you may be able to troubleshoot and fix the P0590 code yourself. However, if you are unfamiliar with electrical systems or lack the tools, it is recommended to seek the assistance of a professional mechanic to ensure proper diagnosis and repair.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0590 code is an OBD-II trouble code that indicates a problem with the cruise control system in your vehicle. Specifically, it refers to the Cruise Control Multi-Function Input &#8220;B&#8221; Circuit being stuck, which prevents proper operation of the cruise control feature. What Does the P0590 Code Mean? The P0590 code is triggered when the &hellip;<\/p>\n","protected":false},"author":26,"featured_media":94069,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-77902","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P0590 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0590 code, what causes cruise control multi-function input &#039;B&#039; circuit stuck, and how to diagnose and fix common issues to maintain optimal engine performance.\" \/>\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.emanualonline.com\/blog\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0590 OBD2: Cruise Control Multi-Function Input &quot;B&quot; Circuit Stuck\" \/>\n<meta property=\"og:description\" content=\"The P0590 code is an OBD-II trouble code that indicates a problem with the cruise control system in your vehicle. Specifically, it refers to the Cruise\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-26T16:17:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JC Landry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0590 OBD2: Cruise Control Multi-Function Input &#8220;B&#8221; 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0590-obd2-cruise-control-multi-function-input-b-circuit-stuck-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"The P0590 code is an OBD-II trouble code that indicates a problem with the cruise control system in your vehicle. 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