{"id":71827,"date":"2022-09-01T03:07:08","date_gmt":"2022-09-01T10:07:08","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=71827"},"modified":"2023-08-31T19:52:13","modified_gmt":"2023-09-01T02:52:13","slug":"p2172-code-throttle-actuator-control-system-sudden-high-air-flow-detected","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2172-code-throttle-actuator-control-system-sudden-high-air-flow-detected\/","title":{"rendered":"P2172 Code: Throttle Actuator Control System &#8211; Sudden High Air Flow Detected"},"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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_e6f7ed-4b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_e6f7ed-4b > .kt-inside-inner-col,.kadence-column_e6f7ed-4b > .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_e6f7ed-4b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_e6f7ed-4b > .kt-inside-inner-col{flex-direction:column;}.kadence-column_e6f7ed-4b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_e6f7ed-4b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_e6f7ed-4b{position:relative;}@media all and (max-width: 1024px){.kadence-column_e6f7ed-4b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_e6f7ed-4b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_e6f7ed-4b qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-67dc8f  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-07e32e\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_5bd536-60, .wp-block-kadence-advancedheading.kt-adv-heading_5bd536-60[data-kb-block=\"kb-adv-heading_5bd536-60\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_5bd536-60 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_5bd536-60[data-kb-block=\"kb-adv-heading_5bd536-60\"] 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_5bd536-60 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_5bd536-60[data-kb-block=\"kb-adv-heading_5bd536-60\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_5bd536-60 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_5bd536-60\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The diagnostic trouble code (DTC) P2172 indicates &ldquo;Throttle Actuator Control System &ndash; Sudden High Air Flow Detected.&rdquo;<\/li><li>The vehicle&rsquo;s computer will set this code when it detects unexpected high airflow entering or bypassing the electronic throttle control system (ETCS).<\/li><li>Common causes of the P2172 code are vacuum leaks, internal engine failure, and a bad manifold absolute pressure sensor, throttle position sensor, or accelerator pedal sensor.<\/li><li>A vehicle that sets a P2172 code can show symptoms like an illuminated check engine light, a &ldquo;no start&rdquo; condition, low or no throttle response, and incorrect idle speed.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Most modern vehicles come equipped with an electronic throttle actuator control system. This system includes <a href=\"https:\/\/www.carparts.com\/throttle-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle position (TP) sensors\">throttle position (TP) sensors<\/a>, an electronic <a href=\"https:\/\/www.carparts.com\/throttle-actuator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle actuator\">throttle actuator<\/a>, and <a href=\"https:\/\/www.carparts.com\/accelerator-pedal-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"accelerator pedal position (APP) sensors\">accelerator pedal position (APP) sensors<\/a>.<\/p>\n\n\n\n<p>Like any other part of your vehicle, the throttle actuator control system can develop faults. Code P2172 indicates the vehicle&rsquo;s onboard electronics have detected unexpected air flow entering or bypassing the system.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2172 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) P2172 stands for &ldquo;Throttle Actuator Control System &ndash; Sudden High Air Flow Detected.&rdquo;<\/p>\n\n\n\n<p>Vehicles that use drive-by-wire throttle control systems can log this code.<\/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\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-1024x666.jpg\" alt=\"Replacement Part Accelerator Pedal Position Sensor\" class=\"wp-image-71868\" width=\"1024\" height=\"666\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-1024x666.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-300x195.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-768x499.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-1536x998.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor-150x98.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/Replacement-Part-Accelerator-Pedal-Position-Sensor.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The powertrain control module (PCM) receives a signal from the APP sensor when the driver depresses the accelerator pedal.<\/figcaption><\/figure>\n\n\n\n<p>The electronic throttle control system (ETCS) controls throttle valve movement. 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) receives a signal from the APP sensor when the driver depresses the <a href=\"https:\/\/www.carparts.com\/accelerator-pedal\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"accelerator pedal\">accelerator pedal<\/a>. The signal indicates how much power the engine needs to operate. The PCM adjusts the throttle plate accordingly.<\/p>\n\n\n\n<p>When the PCM detects&nbsp; unexpected high air flow entering or bypassing the ETCS (from a vacuum leak, etc.), it will set the P2172 code.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P2172 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or online 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 P2172 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Vacuum leaks<\/li><li>Bad <a href=\"https:\/\/www.carparts.com\/blog\/is-it-safe-to-drive-with-a-bad-map-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"manifold absolute pressure\">manifold absolute pressure<\/a>, <a href=\"https:\/\/www.carparts.com\/blog\/bad-throttle-position-sensor-symptoms-what-you-need-to-know\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle position\">throttle position<\/a>, or accelerator pedal sensor<\/li><li>Circuit problems, such as a damaged wire or poor connection<\/li><li>Internal engine 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=\"An issue with the PCM\">An issue with the PCM<\/a><\/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 P2172 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\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"&ldquo;No start&rdquo; condition\">&ldquo;No start&rdquo; condition<\/a><\/li><li>Low or no throttle response<\/li><li>Incorrect idle speed<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2172 Code<\/h2>\n\n\n\n<p>The P2172 code is a generic code that different vehicles can log. However, this does not mean that there is a universal solution to determining its underlying problem.<\/p>\n\n\n\n<p>The steps for diagnosing this code can differ depending on the vehicle&rsquo;s make and model. It&rsquo;s best to leave the job to a professional. But if you&rsquo;re confident that you can do it yourself, consider checking out this video to get an idea of what the diagnostic 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=\"P2172 2004 Dodge ram 1500 high airflow or vacuum leak detected, FOUND WITH OUR SMOKE MACHINE!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Fqw6MV5FPGk?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 P2172 Code<\/h2>\n\n\n\n<p>The repair process for the P2172 code varies, depending on the vehicle&rsquo;s make and model. For example, the repair steps for a P2172 code in a Jeep might differ from the steps that will fix the same code in a Dodge.<\/p>\n\n\n\n<p>If you&rsquo;re an experienced automotive DIYer and you want to fix the issue yourself, 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> before you get started. Alternatively, you can leave the job to a professional.<\/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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Most modern vehicles come equipped with an electronic throttle actuator control system. This system includes throttle position (TP) sensors, an&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2172-code-throttle-actuator-control-system-sudden-high-air-flow-detected\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":71875,"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":[1680,1323,1355,2094,1679],"ppma_author":[2607,2855],"class_list":{"0":"post-71827","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-engine-control-module-2","10":"tag-map-sensor-2","11":"tag-throttle-actuator","12":"tag-throttle-position-sensor","13":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2172 Code: Throttle Actuator Control System - Sudden High Air Flow Detected - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what the P2172 code means, its common causes, and the symptoms associated with it. Plus find out the proper way to approach a solution.\" \/>\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\/p2172-code-throttle-actuator-control-system-sudden-high-air-flow-detected\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2172 Code: Throttle Actuator Control System - Sudden High Air Flow Detected - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what the P2172 code means, its common causes, and the symptoms associated with it. 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