{"id":77486,"date":"2025-09-03T11:51:41","date_gmt":"2025-09-03T16:51:41","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77486"},"modified":"2025-09-03T11:51:41","modified_gmt":"2025-09-03T16:51:41","slug":"p02a4-obd2-cylinder-3-injector-restricted","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p02a4-obd2-cylinder-3-injector-restricted","title":{"rendered":"P02A4 OBD2: Cylinder 3 &#8211; Injector Restricted"},"content":{"rendered":"<p>The P02A4 OBD-II code indicates a restriction in the fuel injector for cylinder 3, which can lead to decreased engine performance and increased fuel consumption.<\/p>\n<h2>What Does the P02A4 Code Mean?<\/h2>\n<p>The P02A4 code is a trouble code that signifies an issue with the fuel injector in cylinder 3. This code is set when the engine control module (ECM) detects that the fuel injector is not delivering the proper amount of fuel to the engine, causing performance issues.<\/p>\n<h2>What Causes the P02A4 Code?<\/h2>\n<p>Several factors can trigger the P02A4 code, including:<\/p>\n<ul>\n<li>Fuel injector failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues related to the fuel injector<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P02A4 Code?<\/h2>\n<p>When the P02A4 code is present, you may experience the following symptoms:<\/p>\n<ul>\n<li>Decreased engine performance<\/li>\n<li>Increased fuel consumption<\/li>\n<\/ul>\n<h2>How Serious Is the P02A4 Code?<\/h2>\n<p>The P02A4 code is considered urgent. If left unaddressed, it can result in significant engine damage or pose safety risks to the driver and passengers. Immediate action is recommended to prevent further complications.<\/p>\n<h2>How to Diagnose the P02A4 Code<\/h2>\n<p>Diagnosing the P02A4 code involves several steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the code.<\/li>\n<li>Inspect the wiring and connectors related to the fuel injector.<\/li>\n<li>Test the fuel injector for proper operation.<\/li>\n<li>Check the PCM for any faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P02A4 Code<\/h2>\n<p>Common repairs associated with the P02A4 code include:<\/p>\n<ul>\n<li>Fuel Injector Replacement<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P02A4 Code?<\/h2>\n<p>The cost to repair the P02A4 code can vary depending on the specific issue, but replacing a fuel injector typically ranges from $150 to $600, including parts and labor.<\/p>\n<h2>Can I Fix the P02A4 Code Myself?<\/h2>\n<p>While some experienced DIY mechanics may be able to replace a fuel injector, it is crucial to accurately diagnose the issue first. If you&#8217;re unsure about the source of the problem, seeking professional assistance is recommended to avoid unnecessary repairs.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P02A4 OBD-II code indicates a restriction in the fuel injector for cylinder 3, which can lead to decreased engine performance and increased fuel consumption. What Does the P02A4 Code Mean? The P02A4 code is a trouble code that signifies an issue with the fuel injector in cylinder 3. This code is set when the &hellip;<\/p>\n","protected":false},"author":26,"featured_media":95317,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-77486","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P02A4 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P02A4 code, what causes cylinder 3 injector restriction, and how to diagnose and fix common issues to maintain optimal engine performance.\" \/>\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.emanualonline.com\/blog\/p02a4-obd2-cylinder-3-injector-restricted\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P02A4 OBD2: Cylinder 3 - Injector Restricted\" \/>\n<meta property=\"og:description\" content=\"The P02A4 OBD-II code indicates a restriction in the fuel injector for cylinder 3, which can lead to decreased engine performance and increased fuel\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p02a4-obd2-cylinder-3-injector-restricted\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-09-03T16:51:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JC Landry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p02a4-obd2-cylinder-3-injector-restricted#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p02a4-obd2-cylinder-3-injector-restricted\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P02A4 OBD2: Cylinder 3 &#8211; 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p02a4-obd2-cylinder-3-injector-restricted-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"The P02A4 OBD-II code indicates a restriction in the fuel injector for cylinder 3, which can lead to decreased engine performance and increased fuel consumption. What Does the P02A4 Code Mean? The P02A4 code is a trouble code that signifies an issue with the fuel injector in cylinder 3. This code is set when the&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=77486"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77486\/revisions"}],"predecessor-version":[{"id":84185,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77486\/revisions\/84185"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/95317"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}