{"id":85048,"date":"2023-06-07T01:54:42","date_gmt":"2023-06-07T08:54:42","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=85048"},"modified":"2024-12-19T05:58:58","modified_gmt":"2024-12-19T13:58:58","slug":"p1399-code-random-cylinder-misfire-detected","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p1399-code-random-cylinder-misfire-detected\/","title":{"rendered":"P1399 Code: Random Cylinder 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col,.kadence-column85048_2f0ea6-d5 > .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-column85048_2f0ea6-d5 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col{flex-direction:column;}.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column85048_2f0ea6-d5{position:relative;}@media all and (max-width: 1024px){.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column85048_2f0ea6-d5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column85048_2f0ea6-d5 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-186591  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-029447\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading85048_7a818e-a9, .wp-block-kadence-advancedheading.kt-adv-heading85048_7a818e-a9[data-kb-block=\"kb-adv-heading85048_7a818e-a9\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading85048_7a818e-a9 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading85048_7a818e-a9[data-kb-block=\"kb-adv-heading85048_7a818e-a9\"] 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-heading85048_7a818e-a9 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading85048_7a818e-a9[data-kb-block=\"kb-adv-heading85048_7a818e-a9\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading85048_7a818e-a9 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading85048_7a818e-a9\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A misfire in one of the cylinders can trigger a P1399 trouble code.<\/li>\n\n\n\n<li>An illuminated check engine light, a hard starting engine, and poor acceleration are common symptoms that point to a logged P1399.<\/li>\n\n\n\n<li>A steadily misfiring cylinder will cause the powertrain control module to deactivate the fuel injector.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Most vehicles have a misfire monitor that the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) uses to identify whether or not a cylinder is misfiring.<\/p>\n\n\n\n<p>The PCM uses the information from the <a href=\"https:\/\/www.carparts.com\/crankshaft-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"crankshaft position sensor\">crankshaft position sensor<\/a> to calculate the engine&rsquo;s rotational speed and acceleration.<\/p>\n\n\n\n<p>If the PCM detects a misfire, on-board diagnostics will log a P1399 trouble code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P1399 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) P1399 stands for &ldquo;Random Cylinder Misfire Detected.&rdquo;<\/p>\n\n\n\n<p>There are generally two types of engine misfire&#19968;type A and type B.<\/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\/2023\/06\/man-checking-cause-of-engine-misfire-1024x683.jpg\" alt=\"man checking cause of engine misfire\" class=\"wp-image-85049\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/man-checking-cause-of-engine-misfire-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Most vehicles have a misfire monitor that the powertrain control module (PCM) uses to identify whether or not a cylinder is misfiring.<\/figcaption><\/figure>\n\n\n\n<p>A misfire type A can occur at 200 revolutions, resulting in catalyst damage. This will cause the malfunction indicator lamp (MIL) to blink once per second. The PCM\/ECM will also typically deactivate the injector on a steadily misfiring cylinder to prevent catalyst overheating.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>The PCM\/ECM will also typically deactivate the injector on a steadily misfiring cylinder to prevent catalyst overheating.<\/p>\n<cite><em>&ndash;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<p>Meanwhile, a misfire type B can occur at 1,000 revolutions, exceeding approximately one and a half times the Environmental Protection Agency (EPA) federal test procedure standard.<\/p>\n\n\n\n<p>A misfire type B can also cause the vehicle to fail its <a href=\"https:\/\/www.carparts.com\/blog\/how-to-pass-an-emissions-test\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"emissions test\">emissions test<\/a>.<\/p>\n\n\n\n<p>You can learn more about P1399 and similar codes in our in-depth technical discussion about <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=\"cylinder misfires\">cylinder misfires<\/a>.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of <\/em><em>code P1399<\/em><em> may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">P1399 on Some Honda Accord Vehicles<\/h3>\n\n\n\n<p>A P1399 trouble code in some <a href=\"https:\/\/www.carparts.com\/honda\/accord\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Honda Accords\">Honda Accords<\/a> is usually caused by a fault or damage in the <a href=\"https:\/\/www.carparts.com\/cylinder-head\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cylinder head\">cylinder head<\/a>, <a href=\"https:\/\/www.carparts.com\/cylinder-head-gasket\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"cylinder head gasket\">cylinder head gasket<\/a>, and <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injectors\">fuel injectors<\/a>.<\/p>\n\n\n\n<p>In most cases, the malfunction indicator lamp will flash on acceleration at 2,500-3,500 rpm once this code is set.<\/p>\n\n\n<style>.kadence-column85048_2bb163-24 > .kt-inside-inner-col,.kadence-column85048_2bb163-24 > .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-column85048_2bb163-24 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column85048_2bb163-24 > .kt-inside-inner-col{flex-direction:column;}.kadence-column85048_2bb163-24 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column85048_2bb163-24 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column85048_2bb163-24{position:relative;}@media all and (max-width: 1024px){.kadence-column85048_2bb163-24 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column85048_2bb163-24 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column85048_2bb163-24 kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id85048_243e15-82 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id85048_243e15-82 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id85048_243e15-82 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}.kb-row-layout-id85048_243e15-82 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id85048_243e15-82 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id85048_243e15-82 > .kt-row-column-wrap{padding-top:28px;padding-right:16px;padding-bottom:25px;padding-left:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id85048_243e15-82 .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id85048_243e15-82 alignnone pro-tip-wrap wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-right-golden kt-mobile-layout-right-golden kt-row-valign-top\">\n<style>.kadence-column85048_34751b-6d > .kt-inside-inner-col{display:flex;}.kadence-column85048_34751b-6d > .kt-inside-inner-col{min-height:45px;}.kadence-column85048_34751b-6d > .kt-inside-inner-col,.kadence-column85048_34751b-6d > .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-column85048_34751b-6d > .kt-inside-inner-col{row-gap:0px;column-gap:0px;}.kadence-column85048_34751b-6d > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column85048_34751b-6d > .kt-inside-inner-col > *, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column85048_34751b-6d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column85048_34751b-6d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column85048_34751b-6d{position:relative;}@media all and (max-width: 1024px){.kadence-column85048_34751b-6d > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column85048_34751b-6d > .kt-inside-inner-col > *, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column85048_34751b-6d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column85048_34751b-6d > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column85048_34751b-6d > .kt-inside-inner-col > *, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-image, .kadence-column85048_34751b-6d > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column85048_34751b-6d > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column85048_34751b-6d kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image85048_98023b-a8.kb-image-is-ratio-size, .kb-image85048_98023b-a8 .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image85048_98023b-a8.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image85048_98023b-a8 .kb-image-is-ratio-size{align-self:unset;}.kb-image85048_98023b-a8 figure{max-width:45px;}.kb-image85048_98023b-a8 .image-is-svg, .kb-image85048_98023b-a8 .image-is-svg img{width:100%;}.kb-image85048_98023b-a8 .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image85048_98023b-a8\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column85048_f977f5-19 > .kt-inside-inner-col,.kadence-column85048_f977f5-19 > .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-column85048_f977f5-19 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column85048_f977f5-19 > .kt-inside-inner-col{flex-direction:column;}.kadence-column85048_f977f5-19 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column85048_f977f5-19 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column85048_f977f5-19{position:relative;}@media all and (max-width: 1024px){.kadence-column85048_f977f5-19 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column85048_f977f5-19 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column85048_f977f5-19 inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n            <span>A great many Honda vehicles still require valve adjustments. If you have a P1399 code on a Honda, it&rsquo;s best to perform a valve adjustment.<\/span>\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P1399 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Blocked exhaust gas recirculation (EGR) passages<\/li>\n\n\n\n<li>Valve clearance out of range<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P1399 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\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Hard starting\">Hard starting<\/a><\/li>\n\n\n\n<li><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><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<\/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<h2 class=\"wp-block-heading\">How to Diagnose the P1399 Code<\/h2>\n\n\n\n<p>DTC P1399 is a manufacturer-specific powertrain code that applies to certain vehicles with an OBD-II system.<\/p>\n\n\n\n<p>The steps for diagnosis and repair might vary, depending on vehicle specifications.<\/p>\n\n\n\n<p>The process might also involve using a few tools and conducting a visual inspection of the affected component. If you&rsquo;re not confident with your DIY skills yet, you can always ask for help from a trusted professional. Otherwise, you can go ahead and do it yourself.<\/p>\n\n\n\n<p>To help you out, here are some videos that show what the process usually involves:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P1399 Code<\/h2>\n\n\n\n<p>Without the right tools and automotive know-how, attempting to fix a P1399 trouble code can be tricky and frustrating. If done incorrectly, the repair might even result in more damage.<\/p>\n\n\n\n<p>If you don&rsquo;t have enough experience in automotive repair, it might be a good idea to bring your vehicle to the nearest auto repair shop and leave the task to the pros. This will ensure that all steps for diagnosis and repair will be followed correctly.<\/p>\n\n\n\n<p>But if you think you can handle the task on your own, make sure to have the necessary equipment and information before proceeding.<\/p>\n\n\n\n<p>Guides like those from Chilton or an ALLDATA subscription contain vehicle-specific repair information, so you might want to check those out before you start.<\/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>Most vehicles have a misfire monitor that the powertrain control module (PCM) uses to identify whether or not a cylinder&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p1399-code-random-cylinder-misfire-detected\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":85050,"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":[1623,1323],"ppma_author":[2607,2985],"class_list":{"0":"post-85048","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-crankshaft-position-sensor-2","9":"tag-engine-control-module-2","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P1399 Code: Random Cylinder Misfire Detected - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what a P1399 code means, as well as the faulty parts that could trigger it in this comprehensive guide.\" \/>\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\/p1399-code-random-cylinder-misfire-detected\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P1399 Code: Random Cylinder Misfire Detected - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what a P1399 code means, as well as the faulty parts that could trigger it in this comprehensive guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p1399-code-random-cylinder-misfire-detected\/\" \/>\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=\"2023-06-07T08:54:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:58:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/two-mechanics-resolving-p1399-code-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1366\" \/>\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\\\/p1399-code-random-cylinder-misfire-detected\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p1399-code-random-cylinder-misfire-detected\\\/\"},\"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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