{"id":64123,"date":"2021-12-16T00:27:53","date_gmt":"2021-12-16T08:27:53","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=64123"},"modified":"2024-08-19T23:54:34","modified_gmt":"2024-08-20T06:54:34","slug":"p0508-code-idle-air-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0508-code-idle-air-control-circuit-low\/","title":{"rendered":"P0508 Code: Idle Air Control 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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col,.kadence-column64123_5f6ff9-50 > .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-column64123_5f6ff9-50 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col{flex-direction:column;}.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column64123_5f6ff9-50{position:relative;}@media all and (max-width: 1024px){.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column64123_5f6ff9-50 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column64123_5f6ff9-50 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-36a66e  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-05e126\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading64123_cd4a68-7c, .wp-block-kadence-advancedheading.kt-adv-heading64123_cd4a68-7c[data-kb-block=\"kb-adv-heading64123_cd4a68-7c\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading64123_cd4a68-7c mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading64123_cd4a68-7c[data-kb-block=\"kb-adv-heading64123_cd4a68-7c\"] 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-heading64123_cd4a68-7c img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading64123_cd4a68-7c[data-kb-block=\"kb-adv-heading64123_cd4a68-7c\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading64123_cd4a68-7c summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading64123_cd4a68-7c\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P0508 code stands for &ldquo;Idle Air Control Circuit Low.&rdquo; A triggered P0508 code might mean that your powertrain control module (PCM) has detected a problem with the intake air control (IAC) circuit.<\/li>\n\n\n\n<li>The P0508 code can be set by a faulty IAC motor or valve, an engine vacuum leak, shorted IAC control wiring or connectors, carbon buildup in the throttle body or IAC valve, or a bad PCM.<\/li>\n\n\n\n<li>The issues causing the P0508 code can show symptoms like a high engine idle RPM, stalling, throttle body noises, and other trouble codes related to the IAC.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>If you&rsquo;re planning to fix your vehicle on your own, you&rsquo;ll need to follow the recommended diagnostic and repair procedures to keep your vehicle in good condition.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0508 Code Mean?&nbsp;<\/h2>\n\n\n\n<p>The P0508 code is defined as &ldquo;Idle Air Control Circuit Low.&rdquo; It&rsquo;s a generic powertrain trouble code that applies to vehicles with OBD-II, which includes most vehicles made in 1996 and beyond up until the electronic throttle body became prevalent in the 2000s.<\/p>\n\n\n\n<p>The idle air control (IAC) system consists of an actuator that either uses a stepper motor or a variable force current or pulse width controlled solenoid. Code P0508 indicates an issue the ECM\/PCM has detected with at least one electrical wiring circuit or within the actuator itself.<\/p>\n\n\n\n<p>An <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> and a stored P0508 code might mean that your powertrain control module (PCM) has detected a problem with the intake air control (IAC) circuit. The IAC system has parts that are designed to regulate the amount of air entering the intake manifold. If there isn&rsquo;t enough air entering the engine through the <a href=\"https:\/\/www.carparts.com\/throttle-body\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle body\">throttle body<\/a>, your engine may stall. You may get a P0508 code if your <a href=\"https:\/\/www.carparts.com\/blog\/what-does-car-rpm-stand-for\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine&rsquo;s RPM\">engine&rsquo;s RPM<\/a> levels don&rsquo;t meet programmed limitations (e.g. if your vehicle idles at an unusually high RPM or stalls).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"970\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve-1024x970.jpg\" alt=\"idle control valve\" class=\"wp-image-64352\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve-1024x970.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve-300x284.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve-768x728.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve-150x142.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/idle-control-valve.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A faulty idle control valve can trigger code P0508.<\/figcaption><\/figure>\n\n\n\n<p>A detailed understanding of idle air control systems can help you better understand P0508, especially if you&rsquo;re planning to diagnose and fix it yourself. Read our technical discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p0506-idle-air-control-system-rpm-lower-than-expected\/#A_Quick_History_of_Idle_Control_Systems\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"IAC systems\">IAC systems<\/a> for more information.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0508 may 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<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 Causes of the P0508 Code?<\/h2>\n\n\n\n<p>There are several possible causes for a P0508. Here are the most commonly reported ones:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Faulty <a href=\"https:\/\/www.carparts.com\/idle-control-motor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"IAC motor\">IAC motor<\/a> or <a href=\"https:\/\/www.carparts.com\/idle-control-valve\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"valve\">valve<\/a>&nbsp;<\/li>\n\n\n\n<li>Leak in engine vacuum&nbsp;<\/li>\n\n\n\n<li>Open or shorted IAC control wiring or connectors<\/li>\n\n\n\n<li>Carbon buildup in the throttle body or IAC valve&nbsp;<\/li>\n\n\n\n<li>Malfunctioning PCM or PCM programming error<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0508 Code?<\/h2>\n\n\n\n<p>A P0508 code might share similar symptoms with related idle air control circuit trouble codes like P0509, P0511, P0518, and P0519. You&rsquo;ll have to pay close attention to your vehicle&rsquo;s symptoms to make sure. We&rsquo;ve compiled the most common symptoms for this code to help you diagnose the problem.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Idling at a high engine RPM<\/li>\n\n\n\n<li>Engine frequently stalls while idling<\/li>\n\n\n\n<li>Noises coming from the throttle body<\/li>\n\n\n\n<li>Other IAC related codes<\/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\/2021\/12\/throttle-body-1024x683.jpg\" alt=\"throttle body\" class=\"wp-image-64353\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/throttle-body.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Noises coming from the throttle body are among the common symptoms of the P0508 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0508 Code<\/h2>\n\n\n\n<p>A P0508 code can cause problems for your vehicle if it isn&rsquo;t addressed. The following video shows the general diagnostic procedure for troubleshooting a P0508 code. We suggest looking up some technical bulletins or repair manuals for your vehicle before attempting any sort of fix.<\/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=\"P0508 idle air control valve replacement\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/44cZNuLmj98?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 P0508 Code<\/h2>\n\n\n\n<p>Several factors can trigger a P0508 code, which can make the repair process confusing for those who don&rsquo;t have the required auto repair knowledge and expertise.&nbsp;<\/p>\n\n\n\n<p>If you still want to perform the repairs on your own, you could start by <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"checking your vehicle&rsquo;s repair manual\">checking your vehicle&rsquo;s repair manual<\/a>. You might also find the information you need from repair manuals, like those from Chilton. We also highly recommend an ALLDATA single-vehicle subscription for beginner DIYers because it contains detailed instructions and diagrams.&nbsp;<\/p>\n\n\n\n<p>After gathering all the information you need, you&rsquo;ll have to find the underlying causes of your DTC to figure out the next steps. Don&rsquo;t assume that a P0508 code means you have a bad IAC part. You might have a faulty PCM or bad connectors. Make sure to thoroughly check your IAC system and PCM to pinpoint the problem that&rsquo;s causing your <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"DTC\">DTC<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Get High-Quality Idle Control Valves For Your Car<\/h2>\n\n\n\n<p>Resolving the P0508 code requires tracking down the part responsible for the trouble code. Whether it&rsquo;s the idle control valve or something else, replace it as soon as possible to avoid additional costly issues. For high-quality replacement idle control valves, order here at CarParts.com.<\/p>\n\n\n\n<p>CarParts.com offers world-class parts and accessories at competitive prices. Our product catalog includes idle air control valves for various makes and models. We speed up the process of finding the right part for your vehicle and budget. Plug your vehicle&rsquo;s details into our website&rsquo;s built-in vehicle selector and browse the results. Do you have any questions about our products? Our helpful customer service team is on hand 24\/7 to assist you in choosing the right product.<\/p>\n\n\n\n<p>Why leave your home to purchase replacement <a href=\"https:\/\/www.carparts.com\/idle-control-valve\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"idle control valves\">idle control valves<\/a> when CarParts.com delivers to your doorstep? Order before noon ET and get your new idle control valve shipped in several business days if you live in the continental US.<\/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>If you&rsquo;re planning to fix your vehicle on your own, you&rsquo;ll need to follow the recommended diagnostic and repair procedures&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0508-code-idle-air-control-circuit-low\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":64351,"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":[],"ppma_author":[2607,2985],"class_list":{"0":"post-64123","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"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>P0508 Code: Idle Air Control Circuit Low - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Is your OBD-II scanner reading a P0508 code? Here\u2019s everything you need to know to address this diagnostic 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\/p0508-code-idle-air-control-circuit-low\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0508 Code: Idle Air Control Circuit Low - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Is your OBD-II scanner reading a P0508 code? Here\u2019s everything you need to know to address this diagnostic trouble code. 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