{"id":67391,"date":"2022-03-08T02:45:14","date_gmt":"2022-03-08T10:45:14","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=67391"},"modified":"2024-12-19T05:15:22","modified_gmt":"2024-12-19T13:15:22","slug":"p0571-code-cruise-control-brake-switch-a-circuit-malfunction","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\/","title":{"rendered":"P0571 Code: Cruise Control \/ Brake Switch A Circuit Malfunction"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column67391_edb924-6e > .kt-inside-inner-col,.kadence-column67391_edb924-6e > .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-column67391_edb924-6e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column67391_edb924-6e > .kt-inside-inner-col{flex-direction:column;}.kadence-column67391_edb924-6e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column67391_edb924-6e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column67391_edb924-6e{position:relative;}@media all and (max-width: 1024px){.kadence-column67391_edb924-6e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column67391_edb924-6e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column67391_edb924-6e inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-aa07d7  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-adccfc\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading67391_74ace6-b1, .wp-block-kadence-advancedheading.kt-adv-heading67391_74ace6-b1[data-kb-block=\"kb-adv-heading67391_74ace6-b1\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading67391_74ace6-b1 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading67391_74ace6-b1[data-kb-block=\"kb-adv-heading67391_74ace6-b1\"] 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-heading67391_74ace6-b1 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading67391_74ace6-b1[data-kb-block=\"kb-adv-heading67391_74ace6-b1\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading67391_74ace6-b1 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading67391_74ace6-b1\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The diagnostic trouble code (DTC) P0571 indicates &ldquo;Cruise Control\/Brake Switch A Circuit Malfunction.&rdquo;<\/li>\n\n\n\n<li>The powertrain control module (PCM) will log this code when it detects an issue with the operation of the brake light switch or, sometimes, the cruise control\/brake switch &ldquo;A&rdquo; circuit.<\/li>\n\n\n\n<li>Common causes of the P0571 code are a defective cruise control\/brake switch, wiring problems, and PCM issues.<\/li>\n\n\n\n<li>The symptoms of a P0571 code include an illuminated check engine light, unusable&nbsp; cruise control, the brake lights not turning on, or erratic cruise control operation.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Code P0571 is one of many trouble codes that can be logged and retrieved from the OBD system. Here is some helpful information that can help you understand what getting this code might mean for your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0571 Code Mean?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-1024x602.jpg\" alt=\"Brake Light Switch\" class=\"wp-image-67488\" style=\"width:1024px;height:602px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-Isolated-Background.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">If the PCM detects an issue with the operation of the brake light switch, code P0571 is logged.<\/figcaption><\/figure>\n\n\n\n<p><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) P0571&nbsp; stands for &ldquo;Brake Switch A Circuit.&rdquo; It is logged when the powertrain control module (PCM) detects an issue with the brake switch or its circuit.<\/p>\n\n\n\n<p>The brake switch is crucial to the operation of your vehicle&rsquo;s cruise control system, not to mention the stop lamps, shift interlock system for taking the vehicle out of park, etc.<\/p>\n\n\n\n<p>If the PCM detects an issue with the operation of the <a href=\"https:\/\/www.carparts.com\/brake-light-switch\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake light switch\">brake light switch<\/a>, then code P0571 might be logged. This code might also be logged if the PCM detects a malfunction within the cruise control\/brake switch &ldquo;A&rdquo; circuit.<\/p>\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<p>The &ldquo;A&rdquo; in this code can refer to a specific wire, connector, or harness. Be sure to check out the appropriate manufacturer-specific service manual to determine what the code specifically refers to.<\/p>\n\n\n\n<p>Depending on the severity of the problem, related error codes might also be stored with this DTC. Code P0571 is very similar to error codes P0572 and <a href=\"https:\/\/www.carparts.com\/blog\/p0573-code-brake-switch-a-circuit-high\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0573\">P0573<\/a>.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0571 might be different depending on the vehicle manufacturer. Consult 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 P0571 Code?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"940\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-1024x940.jpg\" alt=\"engine control module activating P0571 Code\" class=\"wp-image-67489\" style=\"width:1024px;height:940px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-1024x940.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-300x275.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-768x705.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-1536x1410.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code-150x138.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/engine-control-module-activating-P0571-Code.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">An issue with the PCM is a common cause of the P0571 code.<\/figcaption><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Defective <a href=\"https:\/\/www.carparts.com\/cruise-control-switch\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cruise control\">cruise control<\/a>\/brake switch<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Wiring\">Wiring<\/a> problem<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a> issue<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0571 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<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>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/cruise-control-not-working-causes-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Cruise control will not operate\">Cruise control will not operate<\/a><\/li>\n\n\n\n<li>Brake lights might not turn on<\/li>\n\n\n\n<li>Erratic cruise control operation<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0571 Code<\/h2>\n\n\n\n<p>If you have significant DIY automotive troubleshooting experience, you can monitor the brake light switch input using a scan tool while operating the brake as an initial test. This method works for <a href=\"https:\/\/www.carparts.com\/blog\/p0703-code-brake-switch-b-circuit\/#How_to_Diagnose_the_P0703_Code\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"codes similar to P0751\">codes similar to P0751<\/a>, as well.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>If you have significant DIY automotive troubleshooting experience, you can monitor the brake light switch input using a scan tool while operating the brake as an initial test.<\/p>\n<cite><em>&ndash;&nbsp;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<p>Keep in mind, however, that different makes and models can set the error code P0571. This does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your specific vehicle.<\/p>\n\n\n\n<p>Check out the video below to get an idea of what the diagnostic process for this code 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=\"Jeep Patriot P0571\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/YcAeTH38L10?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 P0571 Code<\/h2>\n\n\n\n<p>Code P0571 shares similar triggers and symptoms with other engine codes. However, the appropriate diagnostic and repair procedure will depend on the specifications of your vehicle. If you&rsquo;re unfamiliar with auto repair, it&rsquo;s best to leave the job to a mechanic.<\/p>\n\n\n\n<p>If you&rsquo;re considering troubleshooting this code on your own, it&rsquo;s a good idea to refresh your automotive knowledge before attempting any fixes. Consult a vehicle-specific <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 an online repair database\">repair manual or an online repair database<\/a> to learn the appropriate diagnostic procedures for this code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a New Brake Light Switch to Resolve the P0571 Code<\/h2>\n\n\n\n<p>If your vehicle has set a P0571 code because of a defective brake light switch, don&rsquo;t delay replacing the bad part. It can keep you from using the brake light, increasing the risk of accidents, among other problems. Fortunately, with just a few clicks, you can find what you need at <a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a>.<\/p>\n\n\n\n<p>Visit our website or use our mobile app to check out our high-quality <a href=\"https:\/\/www.carparts.com\/brake-light-switch\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"brake light switches\">brake light switches<\/a>, all of which are on hand and ready to ship from a warehouse near you. Use our vehicle selector to check for fitment and toggle our search filters to shop according to your preferred brand or price range.<\/p>\n\n\n\n<p>Expect to find only the best prices when you shop from us. All our brake light switches come with a low-price and lifetime replacement guarantee, helping you get the best value for your money.<\/p>\n\n\n\n<p>Shop now to clear this trouble code in no time!<\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Code P0571 is one of many trouble codes that can be logged and retrieved from the OBD system. Here is&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":67485,"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":[1800,1323],"ppma_author":[2607,2985],"class_list":{"0":"post-67391","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-brake-light-switch","9":"tag-engine-control-module-2","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0571 Code: Cruise Control \/ Brake Switch A Circuit Malfunction - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what code P0571 means, its possible triggers, common symptoms, and how you can try to resolve this trouble code. Read on.\" \/>\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\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0571 Code: Cruise Control \/ Brake Switch A Circuit Malfunction - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what code P0571 means, its possible triggers, common symptoms, and how you can try to resolve this trouble code. Read on.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\/\" \/>\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=\"2022-03-08T10:45:14+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:15:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/03\/Brake-Light-Switch-with-car-interior-as-background.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0571-code-cruise-control-brake-switch-a-circuit-malfunction\\\/\"},\"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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