{"id":77905,"date":"2025-08-26T11:06:16","date_gmt":"2025-08-26T16:06:16","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77905"},"modified":"2025-08-26T11:13:46","modified_gmt":"2025-08-26T16:13:46","slug":"p0593-obd2-cruise-control-multi-function-input-b-circuit-high","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high","title":{"rendered":"P0593 OBD2: Cruise Control Multi-Function Input &#8220;B&#8221; Circuit High"},"content":{"rendered":"<h2>What Does the P0593 Code Mean?<\/h2>\n<p>The P0593 OBD-II code is defined as a &#8220;Cruise Control Multi-Function Input &#8216;B&#8217; Circuit High&#8221;. This means that the engine control module (PCM) has detected a high voltage or signal from the cruise control input switches, leading to the cruise control system being disabled.<\/p>\n<h2>What Causes the P0593 Code?<\/h2>\n<p>Several factors can trigger the P0593 code, including:<\/p>\n<ul>\n<li>Cruise control switch failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues, such as shorts or breaks in the circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0593 Code?<\/h2>\n<p>The primary symptom associated with the P0593 code is the inability to operate the cruise control system. Drivers may notice that the cruise control feature is completely non-functional.<\/p>\n<h2>How Serious Is the P0593 Code?<\/h2>\n<p>The severity of the P0593 code is moderate. While it may not pose an immediate threat to the vehicle&#8217;s safety or functionality, it is advisable to diagnose and address the issue within a reasonable timeframe to ensure optimal performance of the vehicle.<\/p>\n<h2>How to Diagnose the P0593 Code<\/h2>\n<p>Diagnosing the P0593 code typically involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P0593 code.<\/li>\n<li>Inspect the cruise control switches for signs of wear or damage.<\/li>\n<li>Check the wiring and connectors for any faults or loose connections.<\/li>\n<li>Test the Powertrain Control Module (PCM) to ensure it is functioning correctly.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0593 Code<\/h2>\n<p>Repairs for the P0593 code may include:<\/p>\n<ul>\n<li>Replacing faulty cruise control switches<\/li>\n<li>Repairing or replacing damaged wiring and connectors<\/li>\n<li>Replacing a malfunctioning Powertrain Control Module (PCM)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0593 Code?<\/h2>\n<p>The cost to fix the P0593 code can vary widely depending on the specific issue. On average, repairs may range from $100 to $500, depending on whether parts need to be replaced or if wiring issues need to be addressed.<\/p>\n<h2>Can I Fix the P0593 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 P0593 code yourself. However, if you are uncertain or uncomfortable with the process, it is recommended to seek professional assistance from a certified mechanic.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0593 Code Mean? The P0593 OBD-II code is defined as a &#8220;Cruise Control Multi-Function Input &#8216;B&#8217; Circuit High&#8221;. This means that the engine control module (PCM) has detected a high voltage or signal from the cruise control input switches, leading to the cruise control system being disabled. What Causes the P0593 Code? &hellip;<\/p>\n","protected":false},"author":26,"featured_media":94055,"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-77905","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 P0593 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0593 code, what causes cruise control multi-function input &#039;B&#039; circuit high, 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\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0593 OBD2: Cruise Control Multi-Function Input &quot;B&quot; Circuit High\" \/>\n<meta property=\"og:description\" content=\"What Does the P0593 Code Mean? 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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\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0593-obd2-cruise-control-multi-function-input-b-circuit-high-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":"What Does the P0593 Code Mean? The P0593 OBD-II code is defined as a &#8220;Cruise Control Multi-Function Input &#8216;B&#8217; Circuit High&#8221;. This means that the engine control module (PCM) has detected a high voltage or signal from the cruise control input switches, leading to the cruise control system being disabled. What Causes the P0593 Code?&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=77905"}],"version-history":[{"count":2,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77905\/revisions"}],"predecessor-version":[{"id":94058,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77905\/revisions\/94058"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/94055"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}