{"id":66971,"date":"2022-02-28T00:10:08","date_gmt":"2022-02-28T08:10:08","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=66971"},"modified":"2024-12-19T05:16:33","modified_gmt":"2024-12-19T13:16:33","slug":"p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\/","title":{"rendered":"P2127 Code: Throttle \/ Pedal Position Sensor \/ Switch \u201cE\u201d Circuit Low"},"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-column66971_a22205-16 > .kt-inside-inner-col,.kadence-column66971_a22205-16 > .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-column66971_a22205-16 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column66971_a22205-16 > .kt-inside-inner-col{flex-direction:column;}.kadence-column66971_a22205-16 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column66971_a22205-16 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column66971_a22205-16{position:relative;}@media all and (max-width: 1024px){.kadence-column66971_a22205-16 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column66971_a22205-16 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column66971_a22205-16 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-8f68bf  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-e9216d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading66971_85124c-b4, .wp-block-kadence-advancedheading.kt-adv-heading66971_85124c-b4[data-kb-block=\"kb-adv-heading66971_85124c-b4\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading66971_85124c-b4 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading66971_85124c-b4[data-kb-block=\"kb-adv-heading66971_85124c-b4\"] 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-heading66971_85124c-b4 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading66971_85124c-b4[data-kb-block=\"kb-adv-heading66971_85124c-b4\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading66971_85124c-b4 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading66971_85124c-b4\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A code P2127 generally means that the powertrain control module (PCM) has detected a low voltage signal from the throttle\/pedal position sensor\/switch, particularly the circuit that&rsquo;s labeled as &ldquo;E.&rdquo;<\/li>\n\n\n\n<li>Several faulty components can trigger this code, including the accelerator pedal position assembly, throttle control motor, throttle position sensor, and PCM.<\/li>\n\n\n\n<li>If this code is set, your vehicle can go into limp mode or display issues like rough idling, stalling, and surging.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>If you see the P2127 code on the OBD scan tool, you&rsquo;ll need to know what you&rsquo;re up against before you even make plans of diagnosing and repairing it. Learn more about what this code means and what its common causes and symptoms are with this brief and informative guide.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2127 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P2127 stands for &ldquo;Throttle\/Pedal Position Sensor\/Switch &ldquo;E&rdquo; Circuit Low. This code sets when the powertrain control module (PCM) detects an unusually low voltage from the <a href=\"https:\/\/www.carparts.com\/throttle-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle\">throttle<\/a>\/<a href=\"https:\/\/www.carparts.com\/accelerator-pedal-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"pedal position sensor\">pedal position sensor<\/a>\/switch. The &ldquo;E&rdquo; in this code&rsquo;s meaning refers to a particular circuit, sensor, or area of a specific circuit designated as &ldquo;E.&rdquo; The specifics of the designation might depend on your vehicle&rsquo;s manufacturer, so be sure to check your repair manual.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"614\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor-1024x614.png\" alt=\"pedal position sensor\" class=\"wp-image-66978\" style=\"width:1024px;height:614px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor-1024x614.png 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor-300x180.png 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor-768x461.png 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor-150x90.png 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/pedal-position-sensor.png 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The P2127 code sets when the PCM detects an unusually low voltage from the throttle\/pedal position sensor\/switch.<\/figcaption><\/figure>\n\n\n\n<p>The electronic throttle control system (ECTS) is responsible for controlling the opening of the throttle valve. When the accelerator pedal is pressed, the accelerator pedal position sensor sends a signal to the PCM indicating how much power is requested from the engine. The PCM then adjusts the opening of the throttle plate accordingly. The expected voltage range from the throttle\/pedal position sensor\/switch might differ depending on the vehicle&rsquo;s manufacturer.<\/p>\n\n\n\n<p>If the PCM detects that the ECTS isn&rsquo;t functioning as requested, it will set the P2127 code. It can also put the engine into &ldquo;<a href=\"https:\/\/www.carparts.com\/blog\/web-stories\/what-is-limp-mode\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"limp mode\">limp mode<\/a>,&rdquo; which limits <a href=\"https:\/\/www.carparts.com\/blog\/what-does-car-rpm-stand-for\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine RPM\">engine RPM<\/a> and reduces power.<\/p>\n\n\n\n<p>Plugging a scan tool into your vehicle&rsquo;s OBD-II port lets you see which <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"trouble codes\">trouble codes<\/a> are set in your vehicle. If the DTC P2127 appears on your scan tool, it&rsquo;s recommended that you take your vehicle to a mechanic for diagnosis and repairs as soon as possible. Driving with this trouble code is not advised.<\/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><em><strong>Note<\/strong>: The definition of code P2127 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 P2127 Code?<\/h2>\n\n\n\n<p>Trouble codes, including P2127, can have multiple possible causes. Below are some of the most common causes of the P2127 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Accelerator pedal position assembly failure<\/li>\n\n\n\n<li>Powertrain control module failure<\/li>\n\n\n\n<li>Throttle control motor failure<\/li>\n\n\n\n<li>TPS not mounted securely<\/li>\n\n\n\n<li>TPS circuit short to ground or another wire<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-throttle-position-sensor-symptoms-what-you-need-to-know\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty TPS\">Faulty TPS<\/a><\/li>\n\n\n\n<li>Faulty PCM<\/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> issue<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-1024x683.jpg\" alt=\"drivers hand on the wheel\" class=\"wp-image-66979\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/drivers-hand-on-the-wheel.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Your car may exhibit surging or decreased engine performance with P2127 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2127 Code?<\/h2>\n\n\n\n<p>Some trouble codes have noticeable symptoms, while others do not. As for the P2127 code, there are quite a few symptoms you might notice:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Illuminated malfunction indicator lamp or <a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check engine lamp\">check engine lamp<\/a><\/li>\n\n\n\n<li>Rough idle<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/car-shuts-off-while-driving-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Stalling\">Stalling<\/a><\/li>\n\n\n\n<li>Surging<\/li>\n\n\n\n<li>Little to <a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-accelerate-properly-when-i-push-the-gas-causes\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"no acceleration\">no acceleration<\/a><\/li>\n\n\n\n<li>Decreased engine performance<\/li>\n\n\n\n<li>The engine might enter limp home mode<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2127 Code<\/h2>\n\n\n\n<p>A lot of DTCs share similar symptoms, possible causes, and trouble areas. This is why it&rsquo;s important to conduct a thorough diagnosis first when dealing with trouble codes, such as the P2127. Attempting repairs or replacing parts without determining the root cause of the issue can lead to even more severe issues down the line.<\/p>\n\n\n\n<p>Fortunately, there are <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"several resources\">several resources<\/a> you can use to find out more about the P2127 code and how the diagnostic process goes.<\/p>\n\n\n\n<p>If you want to know more about troubleshooting and fixing the P2127, here are some videos that explain these processes in more detail:<\/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=\"FIX CODE P0220 P2122 P2127 Throttle Pedal Position Sensor\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/BQAO-CURHaE?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 P2127 Code<\/h2>\n\n\n\n<p>Trouble codes can have multiple possible causes, so there&rsquo;s no single cure-all for all of them. A solution for the P2127 code in a <a href=\"https:\/\/www.carparts.com\/dodge\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dodge\">Dodge<\/a> might not work for the P2127 code in a <a href=\"https:\/\/www.carparts.com\/chevrolet\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Chevy\">Chevy<\/a>. This is why it&rsquo;s vital to determine the root cause first before making any repairs.<\/p>\n\n\n\n<p>That said, not everyone has the proper tools and know-how to diagnose and fix DTCs. If you&rsquo;re not confident in your OBD-II troubleshooting and repair skills, it might be best to leave the job to a certified mechanic or technician so you can avoid even larger repair bills later on.<\/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>If you see the P2127 code on the OBD scan tool, you&rsquo;ll need to know what you&rsquo;re up against before&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":66977,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_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":[1680,1679],"ppma_author":[2607,2855],"class_list":{"0":"post-66971","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-accelerator-pedal-position-sensor","9":"tag-throttle-position-sensor","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2127 Code: Throttle \/ Pedal Position Sensor \/ Switch \u201cE\u201d Circuit Low - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"If you\u2019re dealing with the P2127 trouble code, you might be in for a complicated diagnostic and repair process. Read on for more info.\" \/>\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\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2127 Code: Throttle \/ Pedal Position Sensor \/ Switch \u201cE\u201d Circuit Low - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"If you\u2019re dealing with the P2127 trouble code, you might be in for a complicated diagnostic and repair process. Read on for more info.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\/\" \/>\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=\"2022-02-28T08:10:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:16:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/throttle-position-sensor.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\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\\\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2127-code-throttle-pedal-position-sensor-switch-e-circuit-low\\\/\"},\"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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