{"id":78831,"date":"2025-07-24T15:16:52","date_gmt":"2025-07-24T20:16:52","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78831"},"modified":"2025-07-24T15:16:52","modified_gmt":"2025-07-24T20:16:52","slug":"p0b37-obd2-high-voltage-service-disconnect-open","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0b37-obd2-high-voltage-service-disconnect-open","title":{"rendered":"P0B37 OBD2: High Voltage Service Disconnect Open"},"content":{"rendered":"<p>The P0B37 OBD-II code indicates a problem with the high voltage service disconnect in your vehicle. This code is associated with the Battery Energy Control Module (BECM) and signifies that the high voltage system may not operate properly.<\/p>\n<h2>What Does the P0B37 Code Mean?<\/h2>\n<p>The P0B37 code is defined as a &#8220;High Voltage Service Disconnect Open.&#8221; This means that the service disconnect port, which is crucial for disabling the high voltage system during service, is not functioning as intended. This can lead to safety issues when servicing the vehicle.<\/p>\n<h2>What Causes the P0B37 Code?<\/h2>\n<p>Several factors can trigger the P0B37 code, including:<\/p>\n<ul>\n<li>Failure of the Battery Energy Control Module (BECM)<\/li>\n<li>Damage to the service disconnect plug<\/li>\n<li>The service disconnect plug is not properly connected<\/li>\n<li>Wiring issues related to the service disconnect system<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0B37 Code?<\/h2>\n<p>When the P0B37 code is present, you may notice the following symptoms:<\/p>\n<ul>\n<li>The high voltage system may not operate<\/li>\n<li>Warning lights on the dashboard<\/li>\n<li>Reduced vehicle performance<\/li>\n<\/ul>\n<h2>How Serious Is the P0B37 Code?<\/h2>\n<p>The P0B37 code is classified as urgent. It indicates a significant malfunction that could lead to severe damage to the vehicle or pose safety risks for the driver and passengers. Immediate action is necessary to address this issue.<\/p>\n<h2>How to Diagnose the P0B37 Code<\/h2>\n<p>To diagnose the P0B37 code, follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P0B37 code.<\/li>\n<li>Inspect the service disconnect plug for proper connection and any visible damage.<\/li>\n<li>Check the wiring associated with the service disconnect system for any faults.<\/li>\n<li>Test the Battery Energy Control Module (BECM) to ensure it is functioning correctly.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0B37 Code<\/h2>\n<p>Common repairs for the P0B37 code include:<\/p>\n<ul>\n<li>Replacing a faulty Battery Energy Control Module (BECM)<\/li>\n<li>Repairing or replacing a damaged service disconnect plug<\/li>\n<li>Ensuring the service disconnect plug is properly connected<\/li>\n<li>Fixing any wiring issues related to the service disconnect system<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0B37 Code?<\/h2>\n<p>The cost to fix the P0B37 code can vary widely depending on the specific issue. On average, repairs may range from $100 to $1,500, depending on whether you need to replace the BECM or make less extensive repairs.<\/p>\n<h2>Can I Fix the P0B37 Code Myself?<\/h2>\n<p>While some aspects of diagnosing and repairing the P0B37 code can be done by a knowledgeable DIYer, it is crucial to understand the risks involved with high voltage systems. If you are not experienced with automotive electrical systems, it is advisable to seek professional assistance to ensure safety and proper repair.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0B37 OBD-II code indicates a problem with the high voltage service disconnect in your vehicle. This code is associated with the Battery Energy Control Module (BECM) and signifies that the high voltage system may not operate properly. What Does the P0B37 Code Mean? The P0B37 code is defined as a &#8220;High Voltage Service Disconnect &hellip;<\/p>\n","protected":false},"author":26,"featured_media":91270,"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-78831","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 P0B37 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0B37 code, what causes high voltage service disconnect open, and how to diagnose and fix common issues to maintain optimal vehicle 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\/p0b37-obd2-high-voltage-service-disconnect-open\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0B37 OBD2: High Voltage Service Disconnect Open\" \/>\n<meta property=\"og:description\" content=\"The P0B37 OBD-II code indicates a problem with the high voltage service disconnect in your vehicle. 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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\/07\/p0b37-obd2-high-voltage-service-disconnect-open.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0b37-obd2-high-voltage-service-disconnect-open-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 P0B37 OBD-II code indicates a problem with the high voltage service disconnect in your vehicle. This code is associated with the Battery Energy Control Module (BECM) and signifies that the high voltage system may not operate properly. What Does the P0B37 Code Mean? The P0B37 code is defined as a &#8220;High Voltage Service Disconnect&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78831","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=78831"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78831\/revisions"}],"predecessor-version":[{"id":85530,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78831\/revisions\/85530"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/91270"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}