{"id":15355,"date":"2022-02-18T02:05:00","date_gmt":"2022-02-18T10:05:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=15355"},"modified":"2024-08-13T01:14:50","modified_gmt":"2024-08-13T08:14:50","slug":"p0400-code-exhaust-gas-recirculation-egr-flow-malfunction","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0400-code-exhaust-gas-recirculation-egr-flow-malfunction\/","title":{"rendered":"P0400 Code: Exhaust Gas Recirculation (EGR) Flow 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-column15355_9989a5-f8 > .kt-inside-inner-col,.kadence-column15355_9989a5-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-column15355_9989a5-f8 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column15355_9989a5-f8 > .kt-inside-inner-col{flex-direction:column;}.kadence-column15355_9989a5-f8 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column15355_9989a5-f8 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column15355_9989a5-f8{position:relative;}@media all and (max-width: 1024px){.kadence-column15355_9989a5-f8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column15355_9989a5-f8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column15355_9989a5-f8 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-69bae4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-382cd7\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading15355_701682-85, .wp-block-kadence-advancedheading.kt-adv-heading15355_701682-85[data-kb-block=\"kb-adv-heading15355_701682-85\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading15355_701682-85 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading15355_701682-85[data-kb-block=\"kb-adv-heading15355_701682-85\"] 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-heading15355_701682-85 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading15355_701682-85[data-kb-block=\"kb-adv-heading15355_701682-85\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading15355_701682-85 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading15355_701682-85\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagnostic trouble code (DTC) P0400 code stands for &ldquo;Exhaust Gas Recirculation (EGR) Flow Malfunction.&rdquo;<\/li>\n\n\n\n<li>The code is logged once the flow of exhaust gas recirculation is lower than what the powertrain control module (PCM) expects.<\/li>\n\n\n\n<li>Aside from the check engine light, you&rsquo;ll usually experience engine hesitation, rough idling, reduced power, poor acceleration, engine knocking (or detonation), and poor fuel economy.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"OBD-II codes\">OBD-II codes<\/a> are standardized codes that point toward issues that could increase tailpipe emissions in vehicles, making it easier to diagnose and troubleshoot problems. If your OBD-II scanner registered a code P0400, that indicates a potential problem with your vehicle&rsquo;s exhaust gas recirculation (EGR) system. Learn how to address it by learning about its meaning, causes, symptoms, and more.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0400 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P0400 code stands for &ldquo;Exhaust Gas Recirculation (EGR) Flow Malfunction.&rdquo; It is triggered when the flow of exhaust gas recirculation is lower than what the powertrain control module (PCM) expects.<\/p>\n\n\n\n<p>The heart of the EGR system is the <a href=\"https:\/\/www.carparts.com\/egr-valve\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR valve\">EGR valve<\/a>, which redirects a portion of the exhaust gas into the engine intake manifold to be integrated into the air\/fuel mixture. This reduces cylinder temperature and the amount of nitrogen oxide (NOx). If it malfunctions, your car may fail an <a href=\"https:\/\/www.carparts.com\/blog\/how-to-pass-an-emissions-test\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"emission test\">emission test<\/a>.<\/p>\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\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-1024x683.jpeg\" alt=\"Closeup of exhaust gas recirculation in engine compartment\" class=\"wp-image-15358\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-exhaust-gas-recirculation-in-engine-compartment.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\"> Diagnostic trouble code P0400 is triggered when the flow of exhaust gas recirculation is lower than what the powertrain control module (PCM) expects.<\/figcaption><\/figure>\n\n\n\n<p>In modern vehicles, the <a href=\"https:\/\/www.carparts.com\/blog\/what-does-an-egr-valve-do\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR valve is controlled by the PCM\">EGR valve is controlled by the PCM<\/a>. Meanwhile, on older vehicles, the valve is usually controlled directly by the engine vacuum.<\/p>\n\n\n\n<p>If the PCM detects that there is insufficient exhaust gas being sent into the engine, code P0400 will be triggered. This means that the system is not recirculating exhaust gas under conditions that require EGR.<\/p>\n\n\n\n<p>An in-depth knowledge of the <a href=\"https:\/\/www.carparts.com\/blog\/p0401-code-exhaust-gas-recirculation-egr-flow-insufficient-detected\/#An_In-Depth_Look_at_the_EGR_System\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR system\">EGR system<\/a> can help you come up with a proper DIY fix for P0400. Otherwise, if you&rsquo;re not planning to troubleshoot the code yourself, you can continue reading about the possible causes of this code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Causes of the P0400 Code?<\/h2>\n\n\n\n<p>The causes of the P0400 code may differ depending on the make and model of your car. Here are the most common causes of an EGR flow malfunction or code P0400:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-egr-valve-common-symptoms-and-testing-procedure\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty EGR valve\">Faulty EGR valve<\/a><\/li>\n\n\n\n<li>Clogged EGR passage<\/li>\n\n\n\n<li>Disconnected or damaged vacuum lines<\/li>\n\n\n\n<li>Faulty EGR-related sensor (e.g., <a href=\"https:\/\/www.carparts.com\/egr-temperature-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR temperature sensor\">EGR temperature sensor<\/a>, <a href=\"https:\/\/www.carparts.com\/egr-pressure-feedback-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR pressure sensor\">EGR pressure sensor<\/a>, etc.)<\/li>\n\n\n\n<li>Issues with the EGR control circuit, such as damaged wires or poor connections<\/li>\n\n\n\n<li>An issue with the PCM, such as software in need of an update<\/li>\n<\/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<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor-1024x538.jpg\" alt=\"egr pressure sensor\" class=\"wp-image-66829\" style=\"width:1024px;height:538px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor-1024x538.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor-300x158.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor-768x403.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor-150x79.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/egr-pressure-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Issues with the EGR Pressure Sensor can also trigger the P0400 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0400 Code?<\/h2>\n\n\n\n<p>Now that you know what causes the P0400 code, it&rsquo;s time to learn how to identify it. You may encounter issues that concern the driveability of your car if code P0400 is triggered. Here are the common symptoms of this DTC:<\/p>\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\/car-hesitates-when-accelerating-causes-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine hesitation\">Engine hesitation<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Difficulty in starting the engine\">Difficulty in starting the engine<\/a><\/li>\n\n\n\n<li>Rough idling<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/what-triggers-reduced-engine-power\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Reduce power\">Reduce power<\/a> or <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=\"poor acceleration\">poor acceleration<\/a><\/li>\n\n\n\n<li>Engine knocking or detonation<\/li>\n\n\n\n<li>Reduced fuel economy<\/li>\n<\/ul>\n\n\n\n<p>In some cases, the vehicle will exhibit no symptoms other than an illuminated check engine light or malfunction indicator lamp (MIL).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0400 Code<\/h2>\n\n\n\n<p>Many issues can trigger the P0400 code, which can make it difficult to identify its exact cause. Leave this task to an expert if you are not well-versed in automotive repairs. Otherwise, you may diagnose the problem yourself. Watch these helpful videos to learn more about the P0400 code and get an idea of what its 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=\"How to Clean and Replace an EGR Valve P0400\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/iT8Iww44nZM?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<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=\"EGR  P0400, P0401- P0409 Diagnosis+Understanding Pt1\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/AVC8qBwQlRw?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 P0400 Code<\/h2>\n\n\n\n<p>To fix the P0400 code, you must identify and resolve its exact cause. You also need to make sure that the solution you implement is applicable to your vehicle&rsquo;s make and model. If you are uncertain of your automotive know-how and DIY skills, letting your trusted mechanic handle the job may be your best option. Otherwise, begin the repair process.<\/p>\n\n\n\n<p>Pinpoint what triggered the P0400 code. With the help of <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"online auto repair resources and guides\">online auto repair resources and guides<\/a>, determine the most effective way to resolve the issue. Get an ALLDATA single-vehicle subscription for comprehensive factory repair information that will definitely prove helpful in fixing not only the P0400 code but also any other future issue you may encounter.&nbsp;&nbsp;<\/p>\n\n\n\n<p>Finally, keep in mind that the repair instructions for the P0400 code may vary based on the vehicle&rsquo;s make and model.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Need New EGR Valves to Fix a P0400 Code?<\/h2>\n\n\n\n<p>The EGR valve redirects exhaust gases back into the engine to lessen emissions. When this part malfunctions, the P0400 code can trigger and cause your vehicle to fail an emissions test. You shouldn&rsquo;t let this issue persist. You&rsquo;ll likely need to get this issue fixed down the road in order to pass an emissions test. Good thing getting a replacement EGR valve is easy here at CarParts.com.<\/p>\n\n\n\n<p>Replacing broken engine components can be costly. Good thing you don&rsquo;t have to pay exorbitant prices at the dealership since CarParts.com offers EGR valves at competitive prices. You can trust our parts because they&rsquo;ve passed stringent quality control standards during manufacturing. Our user-friendly website also makes shopping for replacement parts easy, so you can order the part you need with just a few clicks.<\/p>\n\n\n\n<p>Our available EGR valves are ready to ship, so we can deliver your part straight to your doorstep in as fast as two business days! Shop for an <a href=\"https:\/\/www.carparts.com\/egr-valve\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EGR valve\">EGR valve<\/a> at CarParts.com now.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\">\n\n<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/egr-valve\" target=\"_blank\" aria-label=\"EGR Valve\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repf509202_1\" alt=\"EGR Valve\">\n<strong>EGR Valve<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/egr-pressure-feedback-sensor\" target=\"_blank\" aria-label=\"EGR Pressure Feedback Sensor\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repf544501_1\" alt=\"EGR Pressure Feedback Sensor\">\n<strong>EGR Pressure Feedback Sensor<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" aria-label=\"Engine Control Module\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/a1721000_1\" alt=\"Engine Control Module\">\n<strong>Engine Control Module<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n<\/div>\n\n\n\n<p><br><\/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>OBD-II codes are standardized codes that point toward issues that could increase tailpipe emissions in vehicles, making it easier to&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0400-code-exhaust-gas-recirculation-egr-flow-malfunction\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":15359,"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":[361,1834,1575,1323],"ppma_author":[2607,2985],"class_list":{"0":"post-15355","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-egr-valve","9":"tag-egr-vacuum-controller","10":"tag-egr-valve-position-sensor","11":"tag-engine-control-module-2","12":"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>P0400 Code: Exhaust Gas Recirculation (EGR) Flow Malfunction - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Address the P0400 code by learning about its meaning, possible causes, common systems, and more.\" \/>\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\/p0400-code-exhaust-gas-recirculation-egr-flow-malfunction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0400 Code: Exhaust Gas Recirculation (EGR) Flow Malfunction - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Address the P0400 code by learning about its meaning, possible causes, common systems, and more.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0400-code-exhaust-gas-recirculation-egr-flow-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=\"2022-02-18T10:05:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-13T08:14:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/08\/closeup-of-egr-valve.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1534\" \/>\n\t<meta property=\"og:image:height\" content=\"1063\" \/>\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=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0400-code-exhaust-gas-recirculation-egr-flow-malfunction\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0400-code-exhaust-gas-recirculation-egr-flow-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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