{"id":45987,"date":"2022-09-16T04:07:00","date_gmt":"2022-09-16T11:07:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=45987"},"modified":"2026-02-10T18:02:20","modified_gmt":"2026-02-11T02:02:20","slug":"p0204-code-injector-circuit-problem-cylinder-4","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0204-code-injector-circuit-problem-cylinder-4\/","title":{"rendered":"P0204 Code: Injector Circuit Problem &#8211; Cylinder 4"},"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-column45987_581d71-47 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column45987_581d71-47 > .kt-inside-inner-col,.kadence-column45987_581d71-47 > .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-column45987_581d71-47 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column45987_581d71-47 > .kt-inside-inner-col{flex-direction:column;}.kadence-column45987_581d71-47 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column45987_581d71-47 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column45987_581d71-47{position:relative;}@media all and (max-width: 1024px){.kadence-column45987_581d71-47 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column45987_581d71-47 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column45987_581d71-47 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-63632f  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-fba47a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading45987_73350a-f7, .wp-block-kadence-advancedheading.kt-adv-heading45987_73350a-f7[data-kb-block=\"kb-adv-heading45987_73350a-f7\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading45987_73350a-f7 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading45987_73350a-f7[data-kb-block=\"kb-adv-heading45987_73350a-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-heading45987_73350a-f7 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading45987_73350a-f7[data-kb-block=\"kb-adv-heading45987_73350a-f7\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading45987_73350a-f7 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading45987_73350a-f7\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Diagnostic Trouble Code (DTC) P0204 stands for &ldquo;Injector Circuit Problem&mdash;Cylinder 4.&rdquo;<\/li>\n\n\n\n<li>A dormant injector will have a voltage close to the battery voltage, whereas an active one will have a voltage that is &ldquo;low&rdquo; near zero. The PCM will set the P0204 code if the injector&rsquo;s voltage does not match the voltage expected for its state.<\/li>\n\n\n\n<li>A P0204 code can cause engine misfires, reduced acceleration, rough running, and poor fuel economy.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Fuel injectors spray atomized fuel into the cylinders or <a href=\"https:\/\/www.carparts.com\/intake-manifold\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"intake manifolds\">intake manifolds<\/a> of internal combustion engines with an electronic fuel injection system. To activate the injector, the computer that controls the <a href=\"https:\/\/www.carparts.com\/blog\/car-engine-parts\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine\">engine<\/a> energizes the injector&rsquo;s driver. An energized driver forms a closed circuit that moves the injector&rsquo;s valve to the open position.<\/p>\n\n\n\n<p>If the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine control module\">engine control module<\/a> (ECM) or powertrain control module (PCM) detects a problem with the cylinder four fuel injector or its circuit, it will set a P0204 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0204 Code Mean?<\/h2>\n\n\n\n<p>The <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) P0204 indicates &ldquo;Injector Circuit Problem&mdash;Cylinder 4.&rdquo;&nbsp;<\/p>\n\n\n\n<p>Each fuel injector possesses a solenoid-operated valve that allows pressurized fuel to flow out of the part. A special transistor called a &ldquo;driver&rdquo; controls the valve. Energizing the driver creates a closed circuit and moves the valve to an open position.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-1024x682.jpg\" alt=\"technician inspects one fuel injector\" class=\"wp-image-45991\" style=\"width:1024px;height:682px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/technician-inspects-one-fuel-injector.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Fuel injectors spray atomized fuel into the cylinders or intake manifolds of internal combustion engines with an electronic fuel injection system.<\/figcaption><\/figure>\n\n\n\n<p>The engine computer, which is often referred to as the powertrain control module (PCM), keeps track of injector operation. A dormant injector will show a voltage close to battery voltage while an active one will pull its voltage to a &ldquo;low&rdquo; value near zero. If the injector&rsquo;s voltage does not match the voltage expected for its state, the PCM will set the P0204 code.<\/p>\n\n\n\n<p>The PCM also measures the circuit&rsquo;s electrical resistance. It will set a P0204 code if the resistance is much higher or lower than it should be.<\/p>\n\n\n\n<p>Read our technical discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p0201-code-cylinder-1-injector-circuitopen\/#At_In-Depth_Look_at_Fuel_Injection\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injection\">fuel injection<\/a> for a broader background on how codes like P0204 can come about.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0204 may differ according to the vehicle manufacturer. Check the right repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Causes of the P0204 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Worn-out or faulty fuel injector<\/li>\n\n\n\n<li>Powertrain Control Module (PCM) issue&nbsp;<\/li>\n\n\n\n<li>Circuit problems, such as damaged wires and loose connections&nbsp;<\/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\">What are the Common Symptoms of the P0204 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Decreased engine performance, including:\n<ul class=\"wp-block-list\">\n<li>Engine misfire<\/li>\n\n\n\n<li>Engine runs roughly<\/li>\n\n\n\n<li>Reduced acceleration<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Increased fuel consumption<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Check engine light switches on\">Check engine light switches on<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0204 Code<\/h2>\n\n\n\n<p>A DTC P0204 is a generic trouble code that may be logged in vehicles from different auto manufacturers. While these vehicles may display similar triggers and symptoms, the steps for diagnosis and repair may differ according to their make and model.<\/p>\n\n\n\n<p>If you&rsquo;re not sure about your ability to run diagnostic tests on your vehicle, consider bringing it to a professional mechanic. Otherwise, you might consider diagnosing the issue yourself. To help you get started, here is a video&nbsp; that may give you an idea of what the 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=\"Jeep Wrangler: P0204 Injector Circuit &amp; Misfiring\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/5UpsGup-kI4?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 P0204 Code<\/h2>\n\n\n\n<p>Attempting to fix a P0204 code may prove frustrating if you lack the right tools and know-how to test the fuel injector and its circuit. In most cases, it&rsquo;s best to leave the job to professionals.<br>For DIYers with advanced technical knowledge and hands-on experience who prefer to test and replace their vehicle&rsquo;s fuel injector on their own, it will be helpful to rely on <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manuals or repair databases\">repair manuals or repair databases<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a New Fuel Injector for Your Vehicle<\/h2>\n\n\n\n<p>Driving with a P0204 code due to a malfunctioning fuel injector is dangerous, as it leads to various engine issues, such as misfires. Getting engine repairs are expensive, so why not nip the issue in the bud? Shop with CarParts.com to get the replacement piece you need.<\/p>\n\n\n\n<p>Shop for new fuel injectors from the comfort of your home using your phone or laptop to visit <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a>. Use our website&rsquo;s vehicle selector tool to narrow down the catalog to compatible fuel injectors. We partnered with trusted manufacturers to ensure the replacement pieces you buy are of quality. And because our warehouses are strategically located across the country, you can expect to get your order in as fast as two business days.<\/p>\n\n\n\n<p>Don&rsquo;t wait for your engine to misfire before replacing your <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injector\">fuel injector<\/a>. Get a top-notch replacement at CarParts.com today!<\/p>\n\n\n\n<div class=\"shop-project\">\n\n    <h2>Shop this Project<\/h2>\n\n    <ul class=\"shop-project-list\">\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314302\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repf314302_1\" alt=\"Replacement &ndash; Fuel Injector, with Red Connector\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repf314302_1\" alt=\"Replacement &ndash; Fuel Injector, with Red Connector\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314302\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Injector, with Red Connector\">Replacement &ndash; Fuel Injector, with Red Connector<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$22.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314302\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/rd31430003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rd31430003_1\" alt=\"Replacement &ndash; Fuel Injector, Blade Type, 2-Prong Male Terminal, Includes O-Ring\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rd31430003_1\" alt=\"Replacement &ndash; Fuel Injector, Blade Type, 2-Prong Male Terminal, Includes O-Ring\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/rd31430003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Injector, Blade Type, 2-Prong Male Terminal, Includes O-Ring\">Replacement &ndash; Fuel Injector, Blade Type, 2-Prong Male Terminal, Includes O-Ring<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$16.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/rd31430003\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314301\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repf314301_1\" alt=\"Replacement &ndash; Fuel Injector &ndash; New, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repf314301_1\" alt=\"Replacement &ndash; Fuel Injector &ndash; New, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314301\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Fuel Injector &ndash; New, Sold individually\">Replacement &ndash; Fuel Injector &ndash; New, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$27.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/fuel-injector\/replacement\/repf314301\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n            <\/ul>\n<\/div>\n\n\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>Fuel injectors spray atomized fuel into the cylinders or intake manifolds of internal combustion engines with an electronic fuel injection&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0204-code-injector-circuit-problem-cylinder-4\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":45995,"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":[3354,1185],"ppma_author":[2607,2985],"class_list":{"0":"post-45987","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":"tag-fuel-injector-2","10":"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>P0204 Code: Injector Circuit Problem - Cylinder 4 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what a P0204 code means, possible causes, and the common symptoms associated with this code.\" \/>\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\/p0204-code-injector-circuit-problem-cylinder-4\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0204 Code: Injector Circuit Problem - Cylinder 4 - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what a P0204 code means, possible causes, and the common symptoms associated with this code.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0204-code-injector-circuit-problem-cylinder-4\/\" \/>\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:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-16T11:07:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-11T02:02:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/Removing-the-fuel-injector.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0204-code-injector-circuit-problem-cylinder-4\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0204-code-injector-circuit-problem-cylinder-4\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"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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