{"id":71990,"date":"2022-09-02T00:05:03","date_gmt":"2022-09-02T07:05:03","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=71990"},"modified":"2023-08-29T22:28:14","modified_gmt":"2023-08-30T05:28:14","slug":"p2291-code-injector-control-pressure-too-low-engine-cranking","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2291-code-injector-control-pressure-too-low-engine-cranking\/","title":{"rendered":"P2291 Code: Injector Control Pressure Too Low &#8211; Engine Cranking"},"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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_b7dd5c-ce > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_b7dd5c-ce > .kt-inside-inner-col,.kadence-column_b7dd5c-ce > .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_b7dd5c-ce > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_b7dd5c-ce > .kt-inside-inner-col{flex-direction:column;}.kadence-column_b7dd5c-ce > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_b7dd5c-ce > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_b7dd5c-ce{position:relative;}@media all and (max-width: 1024px){.kadence-column_b7dd5c-ce > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_b7dd5c-ce > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_b7dd5c-ce qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-0ca36f  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-959f1f\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_3cc7af-70, .wp-block-kadence-advancedheading.kt-adv-heading_3cc7af-70[data-kb-block=\"kb-adv-heading_3cc7af-70\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_3cc7af-70 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_3cc7af-70[data-kb-block=\"kb-adv-heading_3cc7af-70\"] 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_3cc7af-70 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_3cc7af-70[data-kb-block=\"kb-adv-heading_3cc7af-70\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_3cc7af-70 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_3cc7af-70\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Diagnostic trouble code (DTC) P2291 stands for &ldquo;Injector Control Pressure Too Low &ndash; Engine Cranking.&rdquo;&nbsp; The P2291 code is typically logged in high-pressure diesel injection systems when the powertrain control module (PCM) notes that the injector control pressure is too low.<\/li><li>The P2291 code is commonly caused by a very low engine oil level or a problem with the lubrication system, a faulty high-pressure oil pump, or a bad pressure sensor.<\/li><li>Some common symptoms of the P2291 code include an illuminated check engine light and the engine failing to start or stalling while running.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>A <a href=\"https:\/\/www.carparts.com\/injection-control-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"pressure sensor\">pressure sensor<\/a> keeps track of the pressure level in the high-pressure fuel injection system. It sends the information to 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), which also monitors fuel pressure while the engine is cranking.<\/p>\n\n\n\n<p>If the PCM determines that the injector pressure is too low while the engine is cranking, its diagnostics could log a P2291 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2291 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) P2291 stands for &ldquo;Injector Control Pressure Too Low &ndash; Engine Cranking.&rdquo;<\/p>\n\n\n\n<p>The P2291 code is usually logged in high-pressure diesel injection systems, but it can also apply to vehicles that have gasoline direct fuel injection.<\/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\/engine-fuel-injection-nozzle-focused-1024x682.jpg\" alt=\"engine fuel injection nozzle focused\" class=\"wp-image-71991\" width=\"1024\" height=\"682\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/engine-fuel-injection-nozzle-focused.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The P2291 code is usually logged in high-pressure diesel injection systems, but it can also apply to vehicles that have gasoline direct fuel injection.<\/figcaption><\/figure>\n\n\n\n<p>The PCM monitors the vehicle&rsquo;s high-pressure fuel injection system. It looks out for excessively high or low injector control pressure that can damage the engine.<\/p>\n\n\n\n<p>If the pressure sensor indicates that the injector control pressure is too low, the computer will set the powertrain code P2291.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P2291 can differ according to the vehicle manufacturer. Check the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P2291 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Very low engine oil level or a problem with the lubrication system (diesel engines with hydraulic electronic unit injectors only)<\/li><li>Faulty high-pressure <a href=\"https:\/\/www.carparts.com\/oil-pump\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oil pump\">oil pump<\/a><\/li><li>Bad pressure sensor<\/li><li>Faulty <a href=\"https:\/\/www.carparts.com\/fuel-pressure-regulator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"pressure regulator\">pressure regulator<\/a><\/li><li>Leaking <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel injectors\">fuel injectors<\/a><\/li><li>Circuit problems, such as a damaged wire or poor connection<\/li><\/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 P2291 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><a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine fails to start\">Engine fails to start<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-shuts-off-while-driving-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine stalls while running\">Engine stalls while running<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2291 Code<\/h2>\n\n\n\n<p>The P2291 code is a powertrain trouble code that various makes and models can log. However, this does not mean that there is a one-size-fits-all solution to identify its underlying problem.<\/p>\n\n\n\n<p>If you&rsquo;re not confident about conducting diagnostic tests on your vehicle, it&rsquo;s a good idea to bring it to a licensed mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here is a video that can 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=\"6.0 Powerstroke no start, IPR valve tips and tricks P2291 P2290\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/2hI-LYaOYHw?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<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=\"P2290 P2291 04 6.0 powerstroke no icp, failed hpop pump. tips and tricks on pump removal\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ZWvDM5H30XA?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 P2291 Code<\/h2>\n\n\n\n<p>Attempting to fix a P2291 code can be difficult if you don&rsquo;t have the right tools and automotive knowledge. In most cases, it&rsquo;s best to leave the job to professionals.<\/p>\n\n\n\n<p>But if you&rsquo;re confident that you have the technical knowledge to address the P2291 code on your own, make sure you have everything you need before you get started. Consult a vehicle-specific <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manual or refer to an online repair database\">repair manual or refer to 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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>A pressure sensor keeps track of the pressure level in the high-pressure fuel injection system. It sends the information to&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2291-code-injector-control-pressure-too-low-engine-cranking\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":71992,"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":[1323,1185,1065,3530,1217],"ppma_author":[2607,2855],"class_list":{"0":"post-71990","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":"tag-fuel-pressure-regulator","11":"tag-injection-control-pressure-sensor","12":"tag-oil-pump","13":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2291 Code: Injector Control Pressure Too Low - Engine Cranking - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what code P2291 means, including its usual causes and symptoms. Find out the best approach to resolving the issue. Read on.\" \/>\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\/p2291-code-injector-control-pressure-too-low-engine-cranking\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2291 Code: Injector Control Pressure Too Low - Engine Cranking - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what code P2291 means, including its usual causes and symptoms. Find out the best approach to resolving the issue. 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