{"id":71815,"date":"2022-09-01T03:01:54","date_gmt":"2022-09-01T10:01:54","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=71815"},"modified":"2023-09-04T17:53:31","modified_gmt":"2023-09-05T00:53:31","slug":"p2149-code-fuel-injector-group-b-supply-voltage-circuit-open","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2149-code-fuel-injector-group-b-supply-voltage-circuit-open\/","title":{"rendered":"P2149 Code: Fuel Injector Group \u201cB\u201d Supply Voltage Circuit \/ Open"},"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-column_ab2197-76 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_ab2197-76 > .kt-inside-inner-col,.kadence-column_ab2197-76 > .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-column_ab2197-76 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_ab2197-76 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_ab2197-76 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_ab2197-76 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_ab2197-76{position:relative;}@media all and (max-width: 1024px){.kadence-column_ab2197-76 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_ab2197-76 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_ab2197-76 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-004dd1  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-b625c1\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_a71594-7a, .wp-block-kadence-advancedheading.kt-adv-heading_a71594-7a[data-kb-block=\"kb-adv-heading_a71594-7a\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_a71594-7a mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_a71594-7a[data-kb-block=\"kb-adv-heading_a71594-7a\"] 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-heading_a71594-7a img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_a71594-7a[data-kb-block=\"kb-adv-heading_a71594-7a\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_a71594-7a summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_a71594-7a\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>A logged P2149 code means that the powertrain control module (PCM) has detected a problem with one of the fuel injectors in a specific circuit (group B).<\/li><li>Malfunctioning fuel injectors, damaged wiring harnesses, connector issues, and PCM problems can cause on-board diagnostics to log this code.<\/li><li>Aside from an illuminated check engine light, the only other symptom related to this code is poor engine performance.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>On-board diagnostic (OBD) codes are designed to help mechanics and car owners find potential issues in a car. If your vehicle logs one, you must understand what it means before you attempt any fixes. One of the error codes that can be logged and retrieved from the OBD system is P2149.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2149 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) P2149 stands for &ldquo;Fuel Injector Group &ldquo;B&rdquo; Supply Voltage Circuit\/Open.&rdquo;<\/p>\n\n\n\n<p>If 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) detects that more than one of the fuel injectors in group B is not working properly, its diagnostics will log a P2149 code.<\/p>\n\n\n\n<p>An electronic <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injector\">fuel injector<\/a> system typically uses 12-volt solenoid-operated injectors. These fuel injectors have an armature and a spring-loaded needle valve or ball valve assembly.<\/p>\n\n\n\n<p>The system applies a specific amount of voltage to the solenoid coil until the right level of current is reached. Once the solenoid is energized, fuel flows through the inlet filter screen to the spray nozzle.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-1024x682.jpg\" alt=\"holding a fuel injector for replacement\" class=\"wp-image-71817\" width=\"1024\" height=\"682\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/holding-a-fuel-injector-for-replacement.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>If the powertrain control module (PCM) detects that more than one of the fuel injectors in group B is not working properly, its diagnostics will log a P2149 code.<\/figcaption><\/figure>\n\n\n\n<p>The supply voltage is crucial to the operation of your fuel injection system, and circuit problems can cause significant drivability issues. So the PCM keeps track of any malfunction that&rsquo;s related to the voltage supply.<\/p>\n\n\n\n<p>When the PCM detects a possible fault within the supply voltage to the fuel injectors and\/or other circuits, it logs code P2149. The &ldquo;B&rdquo; in this code points to the specific circuit where the fault is.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P2149 might 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<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 Causes of the P2149 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/the-top-6-signs-of-bad-fuel-injectors\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Malfunctioning fuel injectors\">Malfunctioning fuel injectors<\/a><\/li><li>Damaged <a href=\"https:\/\/www.carparts.com\/wiring-harness\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wiring harness\">wiring harness<\/a><\/li><li>Connector issues<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"An issue with the PCM\">An issue with the PCM<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2149 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><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><li>Engine runs roughly and lacks power<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2149 Code<\/h2>\n\n\n\n<p>Different makes and models can set the error code P2149. However, this doesn&rsquo;t mean that the steps for diagnosing the issue are the same for every vehicle. The process could differ depending on the year, make, and model of the vehicle.<\/p>\n\n\n\n<p>If you don&rsquo;t have the tools or know-how for the job, it&rsquo;s best to leave the task to a licensed mechanic. Otherwise, you can tackle the issue on your own. Check out this video to get an idea of what the diagnostic 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=\"5.9 Cummins P2149 Injector Solenoid Diagnostics - WaY Out Here\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/t3khWpUN5ec?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 P2149 Code<\/h2>\n\n\n\n<p>Although code P2149&nbsp; is a generic trouble code, that doesn&rsquo;t mean it has a universal solution. Keep in mind that vehicles can be structured differently depending on their make and model. So if you&rsquo;re not familiar with auto repair, it&rsquo;s better to contact a mechanic to fix the issue.<\/p>\n\n\n\n<p>But if you&rsquo;re an automotive DIYer, you can troubleshoot this code on your own. It&rsquo;s a good idea to refresh your knowledge on fuel injection systems and auto repair before you get started. To determine the correct diagnostic steps, consult a <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"vehicle-specific repair manual or an online repair database\">vehicle-specific repair manual or an online repair database<\/a>.<\/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>On-board diagnostic (OBD) codes are designed to help mechanics and car owners find potential issues in a car. If your&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2149-code-fuel-injector-group-b-supply-voltage-circuit-open\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":71816,"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":[1323,1185],"ppma_author":[2607,2855],"class_list":{"0":"post-71815","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","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 v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2149 Code: Fuel Injector Group \u201cB\u201d Supply Voltage Circuit \/ Open - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what the P2149 code means and the most common causes and symptoms associated with it. Plus learn the proper way to approach a solution to the issue.\" \/>\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\/p2149-code-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 Code: Fuel Injector Group \u201cB\u201d Supply Voltage Circuit \/ Open - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what the P2149 code means and the most common causes and symptoms associated with it. 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