{"id":79480,"date":"2025-06-16T12:52:05","date_gmt":"2025-06-16T17:52:05","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79480"},"modified":"2025-06-16T12:52:05","modified_gmt":"2025-06-16T17:52:05","slug":"p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open","title":{"rendered":"P2149 OBD2: Fuel Injector Group &#8220;B&#8221; Supply Voltage Circuit\/Open"},"content":{"rendered":"<p>The P2149 OBD-II code is defined as a Fuel Injector Group &#8220;B&#8221; Supply Voltage Circuit\/Open. This code is triggered when the engine&#8217;s powertrain control module (PCM) detects an issue with the fuel injectors in group B, indicating a problem with their power supply or operation.<\/p>\n<h2>What Does the P2149 Code Mean?<\/h2>\n<p>When the PCM identifies that one or both fuel injectors in group B are not functioning properly, it sets the P2149 code. This action disables the affected injectors to prevent further damage to the engine and its components.<\/p>\n<h2>What Causes the P2149 Code?<\/h2>\n<ul>\n<li>Fuel injector failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issue, such as damaged or corroded connections<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2149 Code?<\/h2>\n<ul>\n<li>Engine may run rough<\/li>\n<li>Decreased fuel efficiency<\/li>\n<li>Potential stalling or difficulty starting<\/li>\n<\/ul>\n<h2>How Serious Is the P2149 Code?<\/h2>\n<p>This code is categorized as urgent. It indicates a significant malfunction that requires immediate attention. Ignoring this code can lead to severe engine damage or pose a safety risk to the driver and passengers.<\/p>\n<h2>How to Diagnose the P2149 Code<\/h2>\n<p>Proper diagnosis involves:<\/p>\n<ul>\n<li>Using an OBD-II scanner to confirm the P2149 code and check for any related codes.<\/li>\n<li>Inspecting the wiring and connectors associated with the fuel injectors for damage or corrosion.<\/li>\n<li>Testing the fuel injectors and the PCM to determine if they are functioning correctly.<\/li>\n<\/ul>\n<h2>Common Repairs for the P2149 Code<\/h2>\n<ul>\n<li>Replacing faulty fuel injectors<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Replacing the PCM if it is found to be defective<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2149 Code?<\/h2>\n<p>The cost to repair the P2149 code can vary widely depending on the specific issue. On average, you might expect to pay anywhere from $100 to $1,000, depending on whether it&#8217;s a simple wiring fix or a PCM replacement.<\/p>\n<h2>Can I Fix the P2149 Code Myself?<\/h2>\n<p>While some DIY enthusiasts may be able to diagnose and fix wiring issues or replace fuel injectors, it&#8217;s important to have a solid understanding of automotive systems. If you&#8217;re unsure or encounter PCM issues, seeking professional help is advisable to avoid further complications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P2149 OBD-II code is defined as a Fuel Injector Group &#8220;B&#8221; Supply Voltage Circuit\/Open. This code is triggered when the engine&#8217;s powertrain control module (PCM) detects an issue with the fuel injectors in group B, indicating a problem with their power supply or operation. What Does the P2149 Code Mean? When the PCM identifies &hellip;<\/p>\n","protected":false},"author":26,"featured_media":88762,"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-79480","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 P2149 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2149 code, what causes fuel injector group &#039;B&#039; supply voltage circuit\/open issues, and how to diagnose and fix common problems 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\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2149 OBD2: Fuel Injector Group &quot;B&quot; Supply Voltage Circuit\/Open\" \/>\n<meta property=\"og:description\" content=\"The P2149 OBD-II code is defined as a Fuel Injector Group &quot;B&quot; Supply Voltage Circuit\/Open. This code is triggered when the engine&#039;s powertrain control\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open\" \/>\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=\"2025-06-16T17:52:05+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen.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\\\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuit-open\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P2149 OBD2: Fuel Injector Group &#8220;B&#8221; 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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\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2149-obd2-fuel-injector-group-b-supply-voltage-circuitopen-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 P2149 OBD-II code is defined as a Fuel Injector Group &#8220;B&#8221; Supply Voltage Circuit\/Open. This code is triggered when the engine&#8217;s powertrain control module (PCM) detects an issue with the fuel injectors in group B, indicating a problem with their power supply or operation. What Does the P2149 Code Mean? When the PCM identifies&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79480","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=79480"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79480\/revisions"}],"predecessor-version":[{"id":86179,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79480\/revisions\/86179"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/88762"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}