{"id":74213,"date":"2022-10-05T22:10:43","date_gmt":"2022-10-06T05:10:43","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=74213"},"modified":"2023-09-04T18:05:50","modified_gmt":"2023-09-05T01:05:50","slug":"p2311-code-ignition-coil-d-secondary-circuit","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2311-code-ignition-coil-d-secondary-circuit\/","title":{"rendered":"P2311 Code: Ignition Coil \u201cD\u201d 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_2c32d6-5e > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_2c32d6-5e > .kt-inside-inner-col,.kadence-column_2c32d6-5e > .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_2c32d6-5e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_2c32d6-5e > .kt-inside-inner-col{flex-direction:column;}.kadence-column_2c32d6-5e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_2c32d6-5e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_2c32d6-5e{position:relative;}@media all and (max-width: 1024px){.kadence-column_2c32d6-5e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_2c32d6-5e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_2c32d6-5e qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-2ae1d0  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-4c6e6e\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_553c2c-f7, .wp-block-kadence-advancedheading.kt-adv-heading_553c2c-f7[data-kb-block=\"kb-adv-heading_553c2c-f7\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_553c2c-f7 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_553c2c-f7[data-kb-block=\"kb-adv-heading_553c2c-f7\"] 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_553c2c-f7 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_553c2c-f7[data-kb-block=\"kb-adv-heading_553c2c-f7\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_553c2c-f7 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_553c2c-f7\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>A problem with the ignition coil&rsquo;s secondary circuit can cause the PCM to log a P2311 code. This problem is usually an abnormal voltage in the secondary circuit of the ignition coil labeled as &ldquo;D.&rdquo;<\/li><li>A faulty ignition coil, spark plug wire, or relay; a blown fuse; and open or shorted wiring or connectors can trigger this trouble code.<\/li><li>If this code is logged, your vehicle might exhibit performance-related issues like reduced power, misfiring, and poor fuel economy.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Vehicles are equipped with <a href=\"https:\/\/www.carparts.com\/ignition-coil\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ignition coils\">ignition coils<\/a> that act like a transformer, turning the low voltage power from the vehicle&rsquo;s battery into high voltage by saving it briefly and then sending it to the <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plug\">spark plug<\/a> in a short pulse. When an ignition coil develops a problem, the P2311 code or other related trouble codes could trigger.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2311 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P2311 code means &ldquo;Ignition Coil &lsquo;D&rsquo; Secondary Circuit.&rdquo; This code triggers when the powertrain control module (PCM) detects an abnormal voltage in a secondary control circuit of an ignition coil. There are several secondary ignition coil circuits, each corresponding to a particular ignition coil. This code corresponds to the circuit labeled with the letter D.<\/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\/09\/ignition-coil-removal-1024x683.jpg\" alt=\"ignition coil removal\" class=\"wp-image-74258\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/ignition-coil-removal.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The P2311 code is registered when the PCM detects an abnormal voltage in a secondary control circuit of an ignition coil.<\/figcaption><\/figure>\n\n\n\n<p>The secondary ignition coil circuit consists of the secondary windings inside of the coil, the spark plug, and the <a href=\"https:\/\/www.carparts.com\/spark-plug-wire\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plug wire\">spark plug wire<\/a> (if equipped). Issues with this circuit could lead to problems with the spark plug&rsquo;s functionality, which can lead to engine-related issues.<\/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<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 the P2311 code can differ 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 P2311 Code?<\/h2>\n\n\n\n<p>The P2311 code is commonly caused by the following issues:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/bad-ignition-coil-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Defective ignition coil\">Defective ignition coil<\/a><\/li><li>Faulty spark plug wire<\/li><li>Malfunctioning relay<\/li><li>Blown <a href=\"https:\/\/www.carparts.com\/blog\/car-fuse-facts-what-you-need-to-know-about-automotive-fuses\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuse\">fuse<\/a><\/li><li>Open or shorted <a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wiring\">wiring<\/a> or wiring connectors<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/bad-spark-plug-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Worn spark plug\">Worn spark plug<\/a><\/li><\/ul>\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\/09\/old-and-new-spark-plugs-1024x683.jpg\" alt=\"hand holding old and new spark plugs\" class=\"wp-image-74264\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-768x513.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/old-and-new-spark-plugs.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Your vehicle might have a worn spark plug if it has a logged P2311 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2311 Code?<\/h2>\n\n\n\n<p>Here are the common symptoms of the P2311 code:<\/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=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/cylinder-misfire-causes-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine misfires\">Engine misfires<\/a><\/li><li>Reduced engine performance<\/li><li>Reduced fuel efficiency<\/li><li>Other related trouble codes could trigger<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2311 Code<\/h2>\n\n\n\n<p>While the P2311 code indicates that the ignition coil is faulty, it is possible that it is not the source of the problem. To fix this diagnostic trouble code (DTC), you must first correctly identify the cause. You may need to visually inspect the affected components and wiring, which can be challenging if you are unfamiliar with its layout. It could also require the use of specialized tools and knowledge. If you are unfamiliar with DIY repairs, we recommend consulting a trusted mechanic to properly diagnose the problem.<\/p>\n\n\n\n<p>Interested in diagnosing the problem yourself? Check out the video below to learn more.<\/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=\"Troubleshooting a car computer PCM and a Ignition Coil P2311 P2304 P2302. Chrysler Dodge Caliber PT.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/gd882UpJJkk?start=479&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 P2311 Code<\/h2>\n\n\n\n<p>The repair process for <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"OBD-II trouble codes\">OBD-II trouble codes<\/a> can vary greatly between vehicle models. As a result, know that there won&rsquo;t be a fix-all solution. If you don&rsquo;t have much experience troubleshooting DTCs, then we recommend leaving the task to a trusted professional.<\/p>\n\n\n\n<p>If you think you have the knowledge and skills for the task, then the first step to fixing the code is to properly diagnose its cause. After identifying the cause of the P2311 code, you can start consulting <a href=\"https:\/\/www.carparts.com\/blog\/best-online-resources-to-help-you-learn-how-to-fix-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"online repair resources and guides\">online repair resources and guides<\/a> for possible fixes. Chilton repair manuals can be useful. An ALLDATA DIY subscription might be better, as it provides factory repair information for other people interested in DIY repairs.<\/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>Vehicles are equipped with ignition coils that act like a transformer, turning the low voltage power from the vehicle&rsquo;s battery&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2311-code-ignition-coil-d-secondary-circuit\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":74257,"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":[1169],"ppma_author":[2607,2855],"class_list":{"0":"post-74213","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-ignition-coil-2","9":"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>P2311 Code: Ignition Coil \u201cD\u201d Secondary Circuit - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn about the definition and common causes and symptoms of the P2441 diagnostic trouble code in this article. Read 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\/p2311-code-ignition-coil-d-secondary-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2311 Code: Ignition Coil \u201cD\u201d Secondary Circuit - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn about the definition and common causes and symptoms of the P2441 diagnostic trouble code in this article. 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