{"id":77108,"date":"2022-11-01T16:13:42","date_gmt":"2022-11-01T23:13:42","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=77108"},"modified":"2023-09-19T01:54:18","modified_gmt":"2023-09-19T08:54:18","slug":"p0724-code-brake-switch-b-circuit-high","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0724-code-brake-switch-b-circuit-high\/","title":{"rendered":"P0724 Code: Brake Switch &#8220;B&#8221; Circuit High"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_25a27e-c1 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_25a27e-c1 > .kt-inside-inner-col,.kadence-column_25a27e-c1 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_25a27e-c1 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_25a27e-c1 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_25a27e-c1 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_25a27e-c1 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_25a27e-c1{position:relative;}@media all and (max-width: 1024px){.kadence-column_25a27e-c1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_25a27e-c1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_25a27e-c1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-eb02d3  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-0e01c1\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_387758-3e, .wp-block-kadence-advancedheading.kt-adv-heading_387758-3e[data-kb-block=\"kb-adv-heading_387758-3e\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_387758-3e mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_387758-3e[data-kb-block=\"kb-adv-heading_387758-3e\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading_387758-3e img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_387758-3e[data-kb-block=\"kb-adv-heading_387758-3e\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_387758-3e summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_387758-3e\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Diagnostic trouble code (DTC) P0724 stands for &ldquo;Brake Switch &lsquo;B&rsquo; Circuit High.&rdquo; It covers vehicles with automatic transmissions.<\/li><li>Code P0724 is logged when the powertrain control module (PCM) evaluates the signals sent by the brake switches and detects a high electrical condition in the &ldquo;B&rdquo; circuit.<\/li><li>Common causes of the P0724 code include a faulty or incorrectly adjusted brake switch, shorted or open wiring or connectors, and a blown fuse or burnt fusible link.<\/li><li>Common symptoms of the P0724 code include an illuminated check engine light, the engine stalling when the vehicle comes to a halt, and the torque converter clutch (TCC) lockup not working.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The brake switch is an important part of the <a href=\"https:\/\/www.carparts.com\/blog\/a-short-course-on-brakes\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake system\">brake system<\/a> in any vehicle. It informs the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) about the brake pedal&rsquo;s position. Furthermore, the switch controls the brake lights that warn other drivers on the road about your vehicle suddenly slowing down or stopping.<\/p>\n\n\n\n<p>The PCM will log a P0724 code if it receives an improbable signal from the brake switch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0724 Code Mean?<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble code\">diagnostic trouble code<\/a> (DTC) P0724 indicates &ldquo;Brake Switch &ldquo;B&rdquo; Circuit High.&rdquo; It covers vehicles with automatic transmissions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-1024x577.jpg\" alt=\"driver trying to press car brake pedal\" class=\"wp-image-77109\" width=\"1024\" height=\"577\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-1024x577.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-300x169.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-768x433.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-1536x866.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal-150x85.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/driver-trying-to-press-car-brake-pedal.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The brake switch determines how much the brake pedal has been depressed at any given time.<\/figcaption><\/figure>\n\n\n\n<p>The brake switch determines how much the brake pedal has been depressed at any given time. Based on the readings from the switch, the PCM will adjust the performance of various parts and features.<\/p>\n\n\n\n<p>Some of the powertrain parts and features that rely on accurate information on the brake pedal&rsquo;s position include the torque converter clutch and cruise control. When the driver steps on the brake pedal, they will change their performance.<\/p>\n\n\n\n<p>The PCM regularly evaluates the signals sent by the brake switches. If the controller detects a high electrical condition in the &ldquo;B&rdquo; circuit, it will set the generic powertrain code P0724.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0724 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P0724 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Faulty brake switch<\/li><li>Incorrectly adjusted brake switch<\/li><li>Shorted or open wiring<\/li><li>Shorted or open connectors<\/li><li>Blown fuse or burnt fusible link<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Bad PCM\">Bad PCM<\/a><\/li><li>PCM programming error<\/li><\/ul>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0724 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-shuts-off-while-driving-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine stalls while coming to a halt\">Engine stalls while coming to a halt<\/a><\/li><li>TCC lockup doesn&rsquo;t work<\/li><li>Poor fuel efficiency<\/li><li>Reduced engine performance, especially at high speeds<\/li><li>Transmission shift acts erratically<\/li><li>No stop lamp switches on<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/cruise-control-not-working-causes-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Cruise control inoperative\">Cruise control inoperative<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0724 Code<\/h2>\n\n\n\n<p>The P0724 code is a generic powertrain code. Various makes and models with automatic transmissions can log this code. The root of the problem and its associated symptoms can vary from case to case. Each instance may also need a different approach to diagnosis and repair.<\/p>\n\n\n\n<p>Not sure that you can perform diagnostic tests on your vehicle&rsquo;s brake switch? It&rsquo;s highly recommended to take it to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here is a video that can give you an idea of what the process might involve:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"2008 GMC Yukon XL, P0724\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/hPWqVyP10gI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0724 Code<\/h2>\n\n\n\n<p>Don&rsquo;t have the right tools and know-how to test the brake switch &ldquo;B&rdquo; circuit? That will make trying to fix a P0724 code much harder. In most cases, it&rsquo;s best to tap professionals for the job.<br>Are you a DIYer with advanced technical knowledge and hands-on experience who can and prefers to test and replace their vehicle&rsquo;s brake switches themselves? It&rsquo;s a good idea to consult the appropriate <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manual or refer to an online repair database\">repair manual or refer to an online repair database<\/a>.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The brake switch is an important part of the brake system in any vehicle. It informs the powertrain control module&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0724-code-brake-switch-b-circuit-high\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":77110,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1323],"ppma_author":[2607,2855],"class_list":{"0":"post-77108","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0724 Code: Brake Switch &quot;B&quot; Circuit High - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what a P0724 code means, the possible causes, and the common symptoms associated with this code.\" \/>\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.carparts.com\/blog\/p0724-code-brake-switch-b-circuit-high\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0724 Code: Brake Switch &quot;B&quot; Circuit High - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what a P0724 code means, the possible causes, and the common symptoms associated with this code.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0724-code-brake-switch-b-circuit-high\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-11-01T23:13:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-19T08:54:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/man-with-red-diagnostic-tool-encounters-p0724-code.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0724-code-brake-switch-b-circuit-high\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0724-code-brake-switch-b-circuit-high\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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