{"id":76519,"date":"2022-10-25T20:40:17","date_gmt":"2022-10-26T03:40:17","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=76519"},"modified":"2023-09-18T18:13:41","modified_gmt":"2023-09-19T01:13:41","slug":"p2623-code-injector-control-pressure-regulator-circuit-open","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2623-code-injector-control-pressure-regulator-circuit-open\/","title":{"rendered":"P2623 Code: Injector Control Pressure Regulator 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_920749-2d > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_920749-2d > .kt-inside-inner-col,.kadence-column_920749-2d > .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_920749-2d > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_920749-2d > .kt-inside-inner-col{flex-direction:column;}.kadence-column_920749-2d > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_920749-2d > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_920749-2d{position:relative;}@media all and (max-width: 1024px){.kadence-column_920749-2d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_920749-2d > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_920749-2d qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-ace2f6  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-3985a5\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_f4fa8c-43, .wp-block-kadence-advancedheading.kt-adv-heading_f4fa8c-43[data-kb-block=\"kb-adv-heading_f4fa8c-43\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_f4fa8c-43 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_f4fa8c-43[data-kb-block=\"kb-adv-heading_f4fa8c-43\"] 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_f4fa8c-43 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_f4fa8c-43[data-kb-block=\"kb-adv-heading_f4fa8c-43\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_f4fa8c-43 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_f4fa8c-43\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P2623 code stands for &ldquo; Injector Control Pressure Regulator Circuit\/Open.&rdquo;<\/li><li>This code is logged when the PCM detects a possible problem with the injector pressure regulator or its circuit.<\/li><li>Some of its common causes include a failed injector pressure regulator, wiring or connection issues, and a PCM in need of a software update.<\/li><li>Common symptoms to look out for are an illuminated check engine light, ignition issues, and stalling.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Diesel engines produce power by injecting fuel into the engine&rsquo;s cylinders and combusting it via the high temperatures achieved by compression. The amount of fuel pressure applied to the fuel injectors is critical, as it controls how much fuel is injected into the cylinders. If there are issues with the <a href=\"https:\/\/www.carparts.com\/injection-control-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"injector control pressure regulator\">injector control pressure regulator<\/a>, the powertrain control module (PCM) can store the P2623 code or other related trouble codes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2623 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P2623 is defined as Injector Control Pressure Regulator Circuit\/Open. This code is triggered when the PCM detects a problem with the injector pressure regulator or its circuit.<\/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\/10\/injector-pressure-regulator-of-a-car-1-1024x683.jpg\" alt=\"image of a car injector pressure regulator\" class=\"wp-image-76816\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/injector-pressure-regulator-of-a-car-1.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The P2623 code is triggered when the PCM detects a problem with the injector pressure regulator or its circuit.<\/figcaption><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/fuel-pressure-regulator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Fuel pressure regulators\">Fuel pressure regulators<\/a> are responsible for controlling the pressure of the fuel that&rsquo;s sent to the injectors. Code P2623 often applies to diesel-powered vehicles that have a hydraulic electronic unit injector (HEUI) fuel system. With such a set up, pressurized engine oil powers the fuel injectors. The injector control pressure regulator varies the pressure of the oil delivered to the injectors.<\/p>\n\n\n\n<p>If the PCM detects a problem with the injector pressure regulator or its circuit, it may set code P2623.<\/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<p><em><strong>Note:<\/strong> The definition of the P2623 code can 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<h2 class=\"wp-block-heading\">What are the Common Causes of the P2623 Code?<\/h2>\n\n\n\n<p>These are the most common issues related to the P2623 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Faulty injector pressure regulator<\/li><li>Circuit issues, such as a damaged <a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wire\">wire<\/a> or poor connection<\/li><li>An issue with the PCM, such as software in need of an update<\/li><\/ul>\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\/10\/updating-car-software-1024x720.jpg\" alt=\"laptop sitting on top of a car engine\" class=\"wp-image-76802\" width=\"1024\" height=\"720\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/updating-car-software-1024x720.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/updating-car-software-300x211.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/updating-car-software-768x540.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/updating-car-software-150x106.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/updating-car-software.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Check if your vehicle needs a software update if it has registered the code P2623.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2623 Code?<\/h2>\n\n\n\n<p>Your vehicle might exhibit the following symptoms when the P2623 code is stored:<\/p>\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 refuses to start\">Engine refuses 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\">Engine stalls<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2623 Code<\/h2>\n\n\n\n<p>If your vehicle&rsquo;s PCM has triggered the P2623 code, then the likely culprits are the fuel pressure regulator or its wiring. You need to confirm which part is faulty before performing any kind of repairs. This will probably involve doing a visual inspection and testing the concerned components, which might need special knowledge, tools, or training as these components are often hidden inside the engine bay.<\/p>\n\n\n\n<p>Keep in mind that vehicle layouts and part designs vary, hence their respective repair procedures will also vary depending on the manufacturer. Diagnosing the concerned components might require special knowledge and tools.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2623 Code<\/h2>\n\n\n\n<p>Before attempting to do any repairs, know that there isn&rsquo;t a single solution for any DTC. This is because vehicle models can have different repair procedures. If you don&rsquo;t have much experience troubleshooting DTCs, then we recommend leaving the task to a professional mechanic.<\/p>\n\n\n\n<p>You can try to do the job yourself, but you need to make sure that you know <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 procedures\">vehicle-specific repair procedures<\/a> before you get started. Luckily, this <a href=\"https:\/\/www.carparts.com\/blog\/best-online-resources-to-help-you-learn-how-to-fix-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"information is available online\">information is available online<\/a>. Chilton repair manuals or a subscription to an online repair database like ALLDATA DIY can give you information on the correct diagnostic and repair procedure to clear diagnostic <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"trouble codes\">trouble codes<\/a> like the P2623.<\/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>Diesel engines produce power by injecting fuel into the engine&rsquo;s cylinders and combusting it via the high temperatures achieved by&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2623-code-injector-control-pressure-regulator-circuit-open\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":76779,"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":[3530],"ppma_author":[2607,2855],"class_list":{"0":"post-76519","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-injection-control-pressure-sensor","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2623 Code: Injector Control Pressure Regulator Circuit\/Open - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"This article will help you learn more about the P2623 code\u2019s definition and common causes and symptoms. 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