{"id":10996,"date":"2021-07-13T00:55:00","date_gmt":"2021-07-13T07:55:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=10996"},"modified":"2025-09-01T22:16:45","modified_gmt":"2025-09-02T05:16:45","slug":"p0305-code-cylinder-5-misfire-detected","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0305-code-cylinder-5-misfire-detected\/","title":{"rendered":"P0305 Code: Cylinder 5 Misfire Detected"},"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-column10996_216e7a-fe > .kt-inside-inner-col,.kadence-column10996_216e7a-fe > .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-column10996_216e7a-fe > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column10996_216e7a-fe > .kt-inside-inner-col{flex-direction:column;}.kadence-column10996_216e7a-fe > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column10996_216e7a-fe > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column10996_216e7a-fe{position:relative;}@media all and (max-width: 1024px){.kadence-column10996_216e7a-fe > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column10996_216e7a-fe > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column10996_216e7a-fe inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-a34470  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-2016a2\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading10996_e08011-6c, .wp-block-kadence-advancedheading.kt-adv-heading10996_e08011-6c[data-kb-block=\"kb-adv-heading10996_e08011-6c\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading10996_e08011-6c mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading10996_e08011-6c[data-kb-block=\"kb-adv-heading10996_e08011-6c\"] 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-heading10996_e08011-6c img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading10996_e08011-6c[data-kb-block=\"kb-adv-heading10996_e08011-6c\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading10996_e08011-6c summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading10996_e08011-6c\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P0305 code stands for &ldquo;Cylinder 5 Misfire Detected,&rdquo; which means the powertrain control module (PCM) has counted enough misfire events on cylinder 5 to store the misfire code.<\/li>\n\n\n\n<li>Possible causes for the P0305 code include issues with the ignition system, fuel system, or engine mechanical problems.<\/li>\n\n\n\n<li>Symptoms of the P0305 code include an illuminated check engine light, unsteady or underpowered acceleration, and rough idling.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The OBD-II code P0305 means that the powertrain control module (PCM) has detected a misfire in one of the engine&rsquo;s cylinders. It usually stems from a problem with the ignition system, fuel system, or internal <a href=\"https:\/\/www.carparts.com\/blog\/car-engine-parts\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine components\">engine components<\/a>.<\/p>\n\n\n\n<p>Read this guide to learn more about the P0305 error code&mdash;what it means, its symptoms and causes, as well as tips for diagnosis and repair.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the Code P0305 Mean?<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"941\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-1024x941.jpg\" alt=\"electronic engine control unit triggering P0305\" class=\"wp-image-41549\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-1024x941.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-300x276.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-768x705.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-1536x1411.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305-150x138.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/electronic-engine-control-unit-triggering-P0305.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">P0305 code means that the powertrain control module (PCM) has counted enough misfire events on cylinder 5 to store the misfire code for that cylinder.<\/figcaption><\/figure>\n\n\n\n<p>Diagnostic trouble code (DTC) P0305 stands for &ldquo;Cylinder 5 Misfire Detected.&rdquo; This means that the powertrain control module (PCM) has counted enough misfire events on cylinder 5 to store the misfire code for that cylinder.<\/p>\n\n\n\n    <div class=\"ai-summary-widget\">\n\n        <div class=\"ai-summary-grid\">\n\n            <div>\n                <div class=\"ai-avatar\">\n                    <figure>\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/ai-summary\/ai-bot\" alt=\"AI robot\">\n                    <\/figure>\n                    <span>ELI5<\/span>\n                <\/div>\n            <\/div>\n            <div>\n                <p>Imagine your car's cylinders are like a team of little helpers, all working together to make the car go. Each helper needs to take a turn to \"push\" to make the car run. A misfire happens when one of the helpers doesn't push at an appropriate time. Instead, they push earlier or later. This affects the engine a lot because it will affect the engine's smoothness. It's like when one kid in a relay race drops the baton&mdash;it slows everything down.<\/p>    \n            <\/div>\n\n        <\/div>\n\n        <div class=\"ai-summary-tooltip\">   \n            <p>Not everyone is an auto repair expert. <strong>ELI5 (&ldquo;Explain Like I&rsquo;m Five&rdquo;)<\/strong> provides layperson-friendly explanations of complex automotive concepts, systems, &amp; parts, so you can fully understand their importance. Great for casual car owners and DIY beginners! Powered by AI.<\/p>\n        <\/div>\n\n    <\/div>\n\n\n\n<p>If you need help locating the misfiring cylinder, read our guide about <a href=\"https:\/\/www.carparts.com\/blog\/error-code-p0301-cylinder-1-misfire-detected\/#Cylinder_Number_1_Location_and_Firing_Order\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cylinder location and firing order\">cylinder location and firing order<\/a>. You may also read our technical discussion about how the <a href=\"https:\/\/www.carparts.com\/blog\/p0300-code-random-or-multiple-cylinder-misfire-detected\/#An_In-Depth_Look_at_Cylinder_Misfires\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine computer identifies which cylinder is misfiring\">engine computer identifies which cylinder is misfiring<\/a>.<\/p>\n\n\n\n<p>Otherwise, continue reading to learn the most common causes of the P0305 code.<\/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 P0305 Code?<\/h2>\n\n\n\n<p>A thorough diagnosis can pinpoint the exact cause of code P0305. Common causes of the code include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ignition system problems (e.g.a worn spark plug or failed coil pack)<\/li>\n\n\n\n<li>Fuel system problems (e.g., failed fuel injector or damaged injector driver)<\/li>\n\n\n\n<li>Engine mechanical problems (e.g., a leaking valve or damaged lifter)<\/li>\n<\/ul>\n\n\n\n<p><strong><em>Note: <\/em><\/strong><em>If there are other codes stored in addition to P0305, the causes and symptoms may differ from those listed here.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0305 Code?<\/h2>\n\n\n\n<p>Below are the most common symptoms that accompany the error code P0305 or a cylinder 5 misfire:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"678\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-1024x678.jpg\" alt=\"check engine light on as a symptom of P0305 code\" class=\"wp-image-41548\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-1024x678.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-300x199.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-768x509.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-1536x1017.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/07\/check-engine-light-on-as-a-symptom-of-P0305-code-150x99.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A flashing check engine light is a common symptom of the P0305 code.<\/figcaption><\/figure>\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=\"Check engine light on or flashing\">Check engine light on or flashing<\/a><\/li>\n\n\n\n<li>Hesitating, stumbling, and jerking as you accelerate<\/li>\n\n\n\n<li>Lack of power during acceleration<\/li>\n\n\n\n<li>Rough idling<\/li>\n\n\n\n<li>Dying at stop signs (in extreme cases)<\/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=\"Poor fuel economy\">Poor fuel economy<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How Serious is a Cylinder 5 Misfire (P0305)? How Hard Is It to Fix?<\/h2>\n\n\n\n<p>A misfire on cylinder 5 isn&rsquo;t something to shrug off. The engine can stumble, lose power at the wrong moment, or even cut out while you&rsquo;re driving, which is more than just inconvenient. Left unchecked, the constant misfiring can overheat and destroy the catalytic converter, warp valves, or trigger other damage that snowballs into bigger repair bills.<\/p>\n\n\n\n<p>As for fixing it, the difficulty swings wildly depending on what&rsquo;s wrong. Swapping out a fouled spark plug or a weak ignition coil is straightforward if you have basic tools. Tracking down a bad injector, a wiring fault, or worn valvetrain parts is another story. These jobs demand diagnostic gear, time, and a solid grasp of how the engine works. Without that, you&rsquo;re mostly guessing and throwing parts at the problem.<\/p>\n\n\n\n<p>If you&rsquo;d rather skip the guesswork, hand the car over to a mechanic and let them trace the misfire with the right equipment. You can still <a href=\"https:\/\/www.carparts.com\/blog\/can-i-bring-my-own-parts-to-a-mechanic-to-save-on-auto-repair\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"bring your own parts\">bring your own parts<\/a> to the shop, which is a simple way to cut down the cost of the repair.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0305 Code<\/h2>\n\n\n\n<p>Because there are so many potential causes for code P0305, diagnosis can be difficult. The root cause of the problem could be anything from a worn spark plug to a costly internal engine concern.<\/p>\n\n\n\n<p>Hence, it&rsquo;s a good idea to check for technical service bulletins (if you have access) that could help with the troubleshooting process.<\/p>\n\n\n\n<p>Below are a couple of video references you can use to help you perform a diagnosis:<\/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=\"Misfire Quick Tests (Is it a spark, fuel or compression problem?)\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/uB9XCDO8oa8?start=557&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<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 diagnose a misfire (a ScannerDanner Premium training video)\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/zQXeMqlBagI?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 P0305 Code<\/h2>\n\n\n\n<p>Due to the diversity of vehicle models and the different conditions that can trigger code P0305, there isn&rsquo;t really a universal solution for this issue&mdash;which can make it difficult to address the problem, especially if you&rsquo;re not an expert.<\/p>\n\n\n\n<p>If you&rsquo;re confident enough to resolve the P0305 code on your own, make sure to consult the factory repair information to ensure the suitability of your repair approach. Use repair manuals or, better yet, invest in an ALLDATA single-vehicle subscription to expand your technical know-how.<\/p>\n\n\n\n<p>When in doubt, don&rsquo;t hesitate to reach out to your trusted mechanic. They&rsquo;ll be able to help you pinpoint the exact cause of the issue and determine the best course of action.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get Ignition Components for Your Ride<\/h2>\n\n\n\n<p>Your ignition system is crucial to the operation of your vehicle. So if your scan tool logged code P0305 due to the ignition issues, it&rsquo;s best to resolve it immediately. Luckily, it&rsquo;s easy to find ignition system parts, like <a href=\"https:\/\/www.carparts.com\/spark-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"spark plugs\">spark plugs<\/a> and coil packs, here 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>You don&rsquo;t need to leave your home to shop for the parts you need. You can do it on your phone or computer when you shop online at CarParts.com. Visit our website, filter the results to compatible parts using the vehicle selector tool, and make the selection more specific to your needs with the filters. It only takes a few minutes to find and order what you need.<\/p>\n\n\n\n<p>All our products are available at unbeatable prices, so you can get high-quality ignition components without breaking the bank. These ignition components have all undergone strict quality control tests. Plus, our team of industry veterans handpick each part to ensure functionality and durability.<\/p>\n\n\n\n<p>If you have queries about a specific product, our toll-free hotlines are open 24\/7. Don&rsquo;t ignore trouble codes and risk costly repairs. Check out the replacement parts you need, and get back on the road in no time!<\/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\/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\/np3006_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\/rd31430004_1\">\n<strong>Fuel Injector<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/valve-lifter\" target=\"_blank\" aria-label=\"Valve Lifter\" 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\/rc32170001_1\">\n<strong>Valve Lifter<\/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 OBD-II code P0305 means that the powertrain control module (PCM) has detected a misfire in one of the engine&rsquo;s&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0305-code-cylinder-5-misfire-detected\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":11000,"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":[3354],"ppma_author":[2607,2985],"class_list":{"0":"post-10996","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-car-engine-all-articles","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>P0305 Code: Cylinder 5 Misfire Detected - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what the P0305 code means, its possible causes, common symptoms, as well as how to diagnose and address it. 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\/p0305-code-cylinder-5-misfire-detected\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0305 Code: Cylinder 5 Misfire Detected - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what the P0305 code means, its possible causes, common symptoms, as well as how to diagnose and address it. 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