{"id":77204,"date":"2022-11-02T00:59:36","date_gmt":"2022-11-02T07:59:36","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=77204"},"modified":"2023-09-25T18:59:18","modified_gmt":"2023-09-26T01:59:18","slug":"p0727-code-engine-speed-input-circuit-no-signal","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0727-code-engine-speed-input-circuit-no-signal\/","title":{"rendered":"P0727 Code: Engine Speed Input Circuit No Signal"},"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_5b9522-f8 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_5b9522-f8 > .kt-inside-inner-col,.kadence-column_5b9522-f8 > .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_5b9522-f8 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_5b9522-f8 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_5b9522-f8 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_5b9522-f8 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_5b9522-f8{position:relative;}@media all and (max-width: 1024px){.kadence-column_5b9522-f8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_5b9522-f8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_5b9522-f8 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-4e2e72  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-4f3422\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_c0d4de-76, .wp-block-kadence-advancedheading.kt-adv-heading_c0d4de-76[data-kb-block=\"kb-adv-heading_c0d4de-76\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_c0d4de-76 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_c0d4de-76[data-kb-block=\"kb-adv-heading_c0d4de-76\"] 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_c0d4de-76 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_c0d4de-76[data-kb-block=\"kb-adv-heading_c0d4de-76\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_c0d4de-76 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_c0d4de-76\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P0727 code stands for &ldquo;Engine SPeed Input Circuit No Signal.&rdquo;<\/li><li>The PCM sets this trouble code when it fails to receive an engine speed input signal voltage for a particular period under specific conditions.<\/li><li>Some common triggers for the code include a failing engine speed position sensor, PCM issues, and a failing TCM.<\/li><li>Symptoms to keep an eye out for are an illuminated check engine light, decreased fuel economy, and incorrect transmission shifting.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The 700 series codes that the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"electronic control module\">electronic control module<\/a> (ECM) or powertrain control module (PCM) logs are usually related to the transmission. The <a href=\"https:\/\/www.carparts.com\/transmission-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission control module\">transmission control module<\/a> (TCM), which interacts with the ECM in vehicles with automatic transmissions, controls the transmission in addition to the engine. The PCM directs both the engine and transmission.<\/p>\n\n\n\n<p>P0727 is a generic trouble code related to a fault in the engine speed input circuit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0727 Code Mean?<\/h2>\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) P0727 stands for &ldquo;Engine Speed Input Circuit No Signal.&rdquo;<\/p>\n\n\n\n<p>The transmission shifts up the gear range during acceleration. This allows the vehicle to reach higher speeds while using lesser RPM, which reduces fuel consumption and engine wear. Lowering the engine&rsquo;s RPM, on the other hand, reduces the available power and torque.<\/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\/transmission-control-module-determines-the-appropriate-shift-timing-1024x682.jpg\" alt=\"transmission control module determines the appropriate shift timing\" class=\"wp-image-77205\" width=\"1024\" height=\"682\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/transmission-control-module-determines-the-appropriate-shift-timing.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The TCM determines the appropriate shift timing based on various variables, such as engine RPM and vehicle speed based on the driver&rsquo;s throttle input.<\/figcaption><\/figure>\n\n\n\n<p>The TCM determines the appropriate shift timing based on various variables, such as engine RPM and vehicle speed based on the driver&rsquo;s throttle input. The transmission should account for engine RPM when determining the appropriate gear based on the driver&rsquo;s inputs. This is because it has a huge impact on how much power and torque the engine can produce.<\/p>\n\n\n\n<p>The TCM periodically receives the engine speed signal from the ECM across the data network in place of a dedicated engine speed sensor. The engine speed input sensor is often mounted with a rubber O-ring (on the sensor housing) to create a seal with the <a href=\"https:\/\/www.carparts.com\/transmission-case\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission case\">transmission case<\/a>.<\/p>\n\n\n\n<p>When the PCM fails to receive an engine speed input signal voltage for a particular period and under specific conditions, it sets code P0727.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P0727&nbsp; 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 P0727 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Engine speed position sensor failure<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM issues\">PCM issues<\/a><\/li><li>TCM failure<\/li><li>Wiring problems<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0727 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>Decreased fuel economy<\/li><li>Incorrect transmission shifting<\/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\">How to Diagnose the P0727 Code<\/h2>\n\n\n\n<p>A P0727 code can be logged by vehicles that have an on-board diagnostics system. However, the specifics of diagnosing the code depend on the make and model, so there&rsquo;s no universal way to determine what&rsquo;s causing it.<\/p>\n\n\n\n<p>If you&rsquo;re unsure about running diagnostic tests on your vehicle, it&rsquo;s best to take it to a certified mechanic. Otherwise, you can go ahead and use your automotive know-how to determine the root of the issue on your own.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0727 Code<\/h2>\n\n\n\n<p>To fix a P0727 problem, you&rsquo;ll need specific tools and in-depth knowledge about your engine&rsquo;s transmission and engine input sensor. If you try to address the code yourself despite not having one or both, you&rsquo;ll risk making the problem worse.<\/p>\n\n\n\n<p>But if you&rsquo;re an experienced automotive DIYer with advanced technical knowledge and hands-on experience, you can resolve the trouble code on your own. Make sure you consult a repair manual or an online repair database before getting started. These resources provide guides that are specific to your make and model.<\/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 700 series codes that the electronic control module (ECM) or powertrain control module (PCM) logs are usually related to&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0727-code-engine-speed-input-circuit-no-signal\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":77206,"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":[1323,3009,1222],"ppma_author":[2607,2855],"class_list":{"0":"post-77204","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":"tag-transmission-case","10":"tag-transmission-control-module","11":"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>P0727 Code: Engine Speed Input Circuit No Signal - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"P0727 is a generic trouble code related to a fault in the transmission control module. 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Learn more about it, its causes, symptoms, and more.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0727-code-engine-speed-input-circuit-no-signal\/\" \/>\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=\"2022-11-02T07:59:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-26T01:59:18+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/two-mechanics-encounter-p0727-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\\\/p0727-code-engine-speed-input-circuit-no-signal\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0727-code-engine-speed-input-circuit-no-signal\\\/\"},\"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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