{"id":67085,"date":"2022-02-28T02:19:49","date_gmt":"2022-02-28T10:19:49","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=67085"},"modified":"2024-12-17T18:07:38","modified_gmt":"2024-12-18T02:07:38","slug":"p2302-code-ignition-coil-a-secondary-circuit","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2302-code-ignition-coil-a-secondary-circuit\/","title":{"rendered":"P2302 Code: Ignition Coil \u201cA\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-column67085_0c882a-2e > .kt-inside-inner-col,.kadence-column67085_0c882a-2e > .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-column67085_0c882a-2e > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column67085_0c882a-2e > .kt-inside-inner-col{flex-direction:column;}.kadence-column67085_0c882a-2e > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column67085_0c882a-2e > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column67085_0c882a-2e{position:relative;}@media all and (max-width: 1024px){.kadence-column67085_0c882a-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column67085_0c882a-2e > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column67085_0c882a-2e inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-47a095  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-62b23d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading67085_9c207f-aa, .wp-block-kadence-advancedheading.kt-adv-heading67085_9c207f-aa[data-kb-block=\"kb-adv-heading67085_9c207f-aa\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading67085_9c207f-aa mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading67085_9c207f-aa[data-kb-block=\"kb-adv-heading67085_9c207f-aa\"] 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-heading67085_9c207f-aa img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading67085_9c207f-aa[data-kb-block=\"kb-adv-heading67085_9c207f-aa\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading67085_9c207f-aa summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading67085_9c207f-aa\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagnostic trouble code (DTC) P2302 stands for &ldquo;Ignition Coil &lsquo;A&rsquo; Secondary Circuit.&rdquo; Code P2302 can be logged when the powertrain control module (PCM) detects a problem with ignition coil &ldquo;A&rdquo; or its secondary (high voltage) circuit.<\/li>\n\n\n\n<li>The common causes of the P2302 code include ignition coil failure, worn-out spark plugs, circuit issues, and PCM failure.<\/li>\n\n\n\n<li>Some common symptoms of the P2302 code include an illuminated check engine light, excessive fuel consumption, poor engine performance, and a misfiring engine.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>On-board diagnostic (OBD) codes are designed to help mechanics and vehicle owners like you identify possible issues with your vehicle. But before attempting any fixes to resolve the codes retrieved by your scan tool, it&rsquo;s important to know exactly what they mean.<\/p>\n\n\n\n<p>Code P2302 is one of many trouble codes that can be logged and retrieved from the OBD system. Discover what this code might mean for your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2302 Code Mean?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"684\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-1024x684.jpg\" alt=\"modern car engine with four ignition coils aligned\" class=\"wp-image-67087\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-1024x684.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-768x513.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-1536x1026.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/modern-car-engine-with-four-ignition-coils-aligned.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">P2302 code is logged when the powertrain control module (PCM) detects a problem with ignition coil &ldquo;A&rdquo; or its circuit.<\/figcaption><\/figure>\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) P2302 stands for &ldquo;Ignition Coil &ldquo;A&rdquo; Secondary Circuit.&rdquo; It refers to the ignition coil for number 1 cylinder on engines with coil-on-plug or coil-near-plug ignition systems.<\/p>\n\n\n\n<p>Code P2302 can be logged when the powertrain control module (PCM) detects a problem with ignition coil &ldquo;A&rdquo; or its secondary (high voltage) circuit.<\/p>\n\n\n\n<p>Coils have their primary winding fed with 12 system voltage on their positive primary terminal and when the ground side of the primary is closed (grounded), the coil primary winding is saturated with magnetism. When that ground is interrupted, a high voltage spark is created when the magnetic field collapses.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"912\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-1024x912.jpg\" alt=\"ignition coil winding diagram\" class=\"wp-image-81749\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-1024x912.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-300x267.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-768x684.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-1536x1368.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram-150x134.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/ignition-coil-winding-diagram.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Every ignition coil has a &ldquo;primary&rdquo; winding and a &ldquo;secondary&rdquo; winding\/circuit. 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. Conventional single coils worked this way (see diagram), but other coils are similar. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>Spark plug operation is a necessary component in gas-powered engines. If the primary voltage to the ignition coil is insufficient, high-energy voltage emission will not occur and the engine will misfire.<\/p>\n\n\n\n<p>If the PCM has detected an unusual voltage condition in the secondary control circuit of the ignition coil designated with the letter A, it might log the P2302 code.<\/p>\n\n\n\n<p>Depending on the severity of the problem, related error codes can also be stored with this DTC.<\/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><strong><em>Note:<\/em><\/strong><em> The definition of code P2302 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<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 P2302 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/ignition-coil\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ignition coil\">Ignition coil<\/a> failure<\/li>\n\n\n\n<li>Worn-out <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plug\">spark plug<\/a><\/li>\n\n\n\n<li>Circuit issues, such as a damaged wire or poor connection<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a> failure<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2302 Code?<\/h2>\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\/15-fuel-economy-hacks-that-can-save-you-money-at-the-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Excessive fuel consumption\">Excessive fuel consumption<\/a><\/li>\n\n\n\n<li>Poor engine performance<\/li>\n\n\n\n<li>Engine misfire<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2302 Code<\/h2>\n\n\n\n<p>Error code P2302 is a generic code that can be set across several makes and models. However, this does not mean that there is a one-size-fits-all approach to diagnosing its underlying cause. The steps for troubleshooting this code will vary depending on your vehicle&rsquo;s make and model.<\/p>\n\n\n\n<p>Check out this video to get an idea of what the diagnostic process for this code 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=\"Hemi p2302.... its not a coil! Diagnose only! pt1 read description!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/zgfIgkw3Jr4?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 P2302 Code<\/h2>\n\n\n\n<p>P2302 can share similar triggers and symptoms with other fault codes. However, that does not mean that they share repair steps as well. All vehicles are different, so make sure to refer to a factory repair guide that is specific to your car.<\/p>\n\n\n\n<p>If you&rsquo;re considering addressing this code by yourself, it&rsquo;s a good idea to refresh your auto repair knowledge before attempting any fixes. 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>. These resources provide the appropriate diagnostic and repair procedures for this code. Alternatively, you can leave this 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>On-board diagnostic (OBD) codes are designed to help mechanics and vehicle owners like you identify possible issues with your vehicle&#8230;. <a href=\"https:\/\/www.carparts.com\/blog\/p2302-code-ignition-coil-a-secondary-circuit\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":67086,"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":[1323,1169,1171],"ppma_author":[2607,2985],"class_list":{"0":"post-67085","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","9":"tag-ignition-coil-2","10":"tag-spark-plug-2","11":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2302 Code: Ignition Coil \u201cA\u201d Secondary Circuit - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Does your car have a logged code P2302? Learn what this code means, its triggers, and the symptoms associated with it 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\/p2302-code-ignition-coil-a-secondary-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2302 Code: Ignition Coil \u201cA\u201d Secondary Circuit - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Does your car have a logged code P2302? Learn what this code means, its triggers, and the symptoms associated with it in this article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2302-code-ignition-coil-a-secondary-circuit\/\" \/>\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=\"2022-02-28T10:19:49+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-18T02:07:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/new-ignition-coils-line-up-on-a-white-table-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1365\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2302-code-ignition-coil-a-secondary-circuit\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2302-code-ignition-coil-a-secondary-circuit\\\/\"},\"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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He has produced a coffee table book of digital watercolors called \u201cMemories of South Alabama\u201d created from his personal photos, along with a dozen Christian fiction short original novels and a collection of short stories, all available in Kindle or softcover format. 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