{"id":15970,"date":"2021-07-23T03:28:00","date_gmt":"2021-07-23T10:28:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=15970"},"modified":"2024-05-27T21:15:11","modified_gmt":"2024-05-28T04:15:11","slug":"p0354-code-ignition-coil-d-primary-secondary-circuit","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0354-code-ignition-coil-d-primary-secondary-circuit\/","title":{"rendered":"P0354 Code: Ignition Coil &#8220;D&#8221; Primary\/Secondary Circuit"},"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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_1e8501-41 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_1e8501-41 > .kt-inside-inner-col,.kadence-column_1e8501-41 > .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_1e8501-41 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_1e8501-41 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_1e8501-41 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_1e8501-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_1e8501-41{position:relative;}@media all and (max-width: 1024px){.kadence-column_1e8501-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_1e8501-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_1e8501-41 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-e82adf  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-23a03d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_e68861-ba, .wp-block-kadence-advancedheading.kt-adv-heading_e68861-ba[data-kb-block=\"kb-adv-heading_e68861-ba\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_e68861-ba mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_e68861-ba[data-kb-block=\"kb-adv-heading_e68861-ba\"] 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_e68861-ba img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_e68861-ba[data-kb-block=\"kb-adv-heading_e68861-ba\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_e68861-ba summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_e68861-ba\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P0354 code stands for &ldquo;Ignition Coil &lsquo;D&rsquo; Circuit Malfunction,&rdquo; which means the powertrain control module (PCM) has detected an issue with the primary or secondary circuit for ignition coil &ldquo;D.&rdquo;<\/li><li>Some of the possible causes of the P0354 code are a bad ignition coil, an issue with the ignition coil circuit, and a faulty PCM.<\/li><li>An illuminated Check Engine Light, rough idling, and engine misfires are some of the common symptoms of the P0354 code.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The powertrain control system (PCM) manages the ignition coils that ignite the spark plugs at precisely the right time. If the PCM detects a potential problem with the ignition coil &ldquo;D&rdquo; (which is the cylinder #4 ignition coil) or its circuit, code P0354 may be set.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0354 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) P0354 stands for &ldquo;Ignition Coil &lsquo;D&rsquo; Circuit Malfunction.&rdquo; It indicates that the PCM has detected a problem either in the primary or secondary circuit for ignition coil &ldquo;D&rdquo;.  Typically, when a cylinder is referenced using letters of the alphabet this way, &ldquo;A&rdquo; is cylinder 1, &ldquo;B&rdquo; is cylinder 2, and so on.<\/p>\n\n\n\n<p>There are several types of ignition systems, including a distributor, coil pack, or coil on plug (COP) type systems. Typically, code P0354 is set in a COP system.<\/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\/2020\/09\/coil-pack-design-ignition-coil-1024x683.jpeg\" alt=\"coil pack design ignition coil\" class=\"wp-image-15976\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-pack-design-ignition-coil.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption> <em>There are several types of ignition systems, including a distributor, coil pack, or coil on plug (COP) type systems. <\/em><\/figcaption><\/figure>\n\n\n\n<p>In an engine with a COP ignition system, each cylinder comes with its own ignition coil that sits on top of the <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plug\">spark plug<\/a>. The computer monitors the circuit between it and every ignition coil for faults. It will file a trouble code depending on the cylinder that experienced a fault in its circuit. For example, code P0354 indicates a problem with ignition coil &ldquo;D&rdquo;, which is the coil on cylinder #4, or its circuit.  <\/p>\n\n\n\n<p>Every ignition coil has a &ldquo;<strong>primary<\/strong>&rdquo; winding and a &ldquo;<strong>secondary<\/strong>&rdquo; winding. The primary winding is the part of the ignition coil that is triggered by a switching device so that the secondary winding creates the necessary high voltage spark. Since the ECM\/PCM is triggering the primary of each coil or each pair of coils, it has the ability to watch the voltage spike created by the primary winding each time it triggers the secondary winding, and if the ECM\/PCM doesn&rsquo;t see the primary voltage spike that indicates the coil fired, it knows there is a problem of some kind with the primary and possibly the secondary elements of the coil or coil pack. If the secondary part of the ignition coil is shorted out, the primary spike will be weak as a result. That&rsquo;s when it typically sets the P0354 code if the fault is on cylinder #4.<\/p>\n\n\n\n<p>For  more information about the parts of an ignition coil, you can read our technical discussion about the <a href=\"https:\/\/www.carparts.com\/blog\/p0351-code-ignition-coil-a-primarysecondary-circuit\/#A_Closer_Look_at_How_the_Primary_and_Secondary_Windings_of_Ignition_Coils_Work\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"primary and secondary windings of ignition coils\">primary and secondary windings of ignition coils<\/a>.<\/p>\n\n\n\n<p>You may also watch this video to understand how ignition coil works:<\/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 Ignition Coils Work | CarParts.com Parts Explained\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/87d2bGdO0IU?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<p>Continue reading to learn  the possible causes of code p0354.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The Society of Automotive Engineers (SAE) laid down the details about the generic code P0354. The code&rsquo;s definition may change according to the vehicle&rsquo;s manufacturer.<\/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 Possible Causes of the P0354 Code?<\/h2>\n\n\n\n<p>Common symptoms associated with the P0354 code, include:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bad or failing ignition coil<br><\/li><li>An issue with the ignition coil circuit<br><\/li><li>Faulty PCM or PCM software in need of an update<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0354 Code?<\/h2>\n\n\n\n<p>Some warning signs of a code P0354 include:<\/p>\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=\"Check Engine Light will illuminate\">Check Engine Light will illuminate<\/a><br><\/li><li>Rough idling<br><\/li><li>Engine  misfires<\/li><\/ul>\n\n\n\n<p>Some car manufacturers programmed the PCM of several vehicle models to shut down the <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injector\">fuel injector<\/a> of a cylinder when code P0354 is set.<\/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\/2020\/09\/coil-on-plug-ignition-coil-1024x683.jpeg\" alt=\"coil on plug ignition coil\" class=\"wp-image-15975\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/coil-on-plug-ignition-coil.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Typically, code P0354 is set in a COP system.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0354 Code<\/h2>\n\n\n\n<p>Once the scanner shows the P0354 code logged by the PCM, most car owners bring their vehicle to the nearest auto repair shop. If you have plenty of DIY car repair experience under your belt, you can try to diagnose the issue and fix the P0354 Ignition Coil D Location malfunction.<\/p>\n\n\n\n<p>Watching the video below can give you an idea of what the troubleshooting 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=\"Ford Lincoln P0354 Coil D Primary Code\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/cy-3-fz1tSk?start=15&amp;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 P0354 Code <\/h2>\n\n\n\n<p>Once you&rsquo;ve determined what triggered the issue, figure out how to resolve it. Use <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>. However, keep in mind that the repair process may vary based on the car. For instance, what can fix a P0354 code in a <a href=\"https:\/\/www.carparts.com\/ford\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ford\">Ford<\/a> may not be as effective against a P0354 code in a <a href=\"https:\/\/www.carparts.com\/jeep\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Jeep\">Jeep<\/a>.<\/p>\n\n\n\n<p>Narrow down your research to the documented fixes that are specific to your vehicle&rsquo;s make and model.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Getting a New Ignition Coil to Clear Code P0354<\/h2>\n\n\n\n<p>There&rsquo;s a good chance that your ride&rsquo;s PCM logged code P0354 because of a bad <a href=\"https:\/\/www.carparts.com\/ignition-coil\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ignition coil\">ignition coil<\/a>. Fortunately, you can get the perfect replacement that won&rsquo;t break the bank at <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a>.<\/p>\n\n\n\n<p>We source our parts from the most trusted aftermarket brands. All our ignition coils passed the highest quality control standards from industry professionals. Despite that, we offer them at unbeatable prices to give the best value for your money.<\/p>\n\n\n\n<p>We take the guesswork out of finding parts that fit your ride with our vehicle selector. Simply enter your vehicle&rsquo;s details into the tool to view compatible ignition coils. With only a few clicks, you can find the right part for your ride on our website.<\/p>\n\n\n\n<p>Our ignition coils are on hand and ready to ship from strategically located warehouses across the country. So if you order your new ignition coil today, you can get it in as fast as two business days.<\/p>\n\n\n\n<p>Shop now and take advantage of our best deals.<\/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\/ignition-coil\" target=\"_blank\" aria-label=\"ignition coil\" 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\/repn504614_1\">\n<strong>Ignition Coil<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" aria-label=\"spark plug\" 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\/ng90465_1\">\n<strong>Spark Plug<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" aria-label=\"fuel injector\" 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\/repf314304_1\">\n<strong>Fuel Injector<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n\n<\/div>\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\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The powertrain control system (PCM) manages the ignition coils that ignite the spark plugs at precisely the right time. If&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0354-code-ignition-coil-d-primary-secondary-circuit\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":15981,"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":[430,304,335],"ppma_author":[2607,2985],"class_list":{"0":"post-15970","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-fuel-injector","9":"tag-ignition-coil","10":"tag-spark-plug","11":"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>P0354 Code: Ignition Coil &quot;D&quot; Primary\/Secondary Circuit - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Get to know what the code P0354 stands for, the issues that cause it, and its likely symptoms. Find all these information in this article.\" \/>\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\/p0354-code-ignition-coil-d-primary-secondary-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0354 Code: Ignition Coil &quot;D&quot; Primary\/Secondary Circuit - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Get to know what the code P0354 stands for, the issues that cause it, and its likely symptoms. 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