{"id":16517,"date":"2020-09-22T05:30:08","date_gmt":"2020-09-22T12:30:08","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=16517"},"modified":"2024-06-27T08:48:41","modified_gmt":"2024-06-27T15:48:41","slug":"p0045-code-turbo-supercharger-boost-control-a-circuit-open","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\/","title":{"rendered":"P0045 Code: Turbo\/Supercharger Boost Control A 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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_d84a6f-1a > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_d84a6f-1a > .kt-inside-inner-col,.kadence-column_d84a6f-1a > .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_d84a6f-1a > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_d84a6f-1a > .kt-inside-inner-col{flex-direction:column;}.kadence-column_d84a6f-1a > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_d84a6f-1a > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_d84a6f-1a{position:relative;}@media all and (max-width: 1024px){.kadence-column_d84a6f-1a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_d84a6f-1a > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_d84a6f-1a qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-646b38  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-8ded0a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_52c9b4-50, .wp-block-kadence-advancedheading.kt-adv-heading_52c9b4-50[data-kb-block=\"kb-adv-heading_52c9b4-50\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_52c9b4-50 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_52c9b4-50[data-kb-block=\"kb-adv-heading_52c9b4-50\"] 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_52c9b4-50 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_52c9b4-50[data-kb-block=\"kb-adv-heading_52c9b4-50\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_52c9b4-50 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_52c9b4-50\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P0045 code stands for &ldquo;Turbo\/Supercharger Boost Control A Circuit Open.&rdquo;<\/li><li>This code is set when the PCM detects a potential open circuit in the boost control solenoid or its circuit.<\/li><li>Possible causes include a malfunctioning boost pressure\/turbocharger position sensor, a faulty turbocharger\/supercharger, or a defective control solenoid.<\/li><li>Symptoms to keep an eye out for include an illuminated check engine light, insufficient or lack of boost resulting in poor engine performance, as well as detonation and engine damage caused by overboost.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Your vehicle equips several systems that are crucial to its operation and performance. It isn&rsquo;t uncommon for the components of these systems to malfunction at one point. Thankfully, modern vehicles come with onboard diagnostic (OBD) systems to help identify select problems. <\/p>\n\n\n\n<p>One example of a generic trouble code that may appear on various makes and models is code P0045.<\/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 Does the P0045 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) P0045 stands for &ldquo;Turbo\/Supercharger Boost Control A Circuit Open.&rdquo; The code triggers once 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 a potential open circuit in the boost control solenoid (or VGT actuator) or its circuit. <\/p>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/turbocharger\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Turbochargers\">Turbochargers<\/a>and <a href=\"https:\/\/www.carparts.com\/supercharger-kit\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"superchargers\">superchargers<\/a>are forced air induction devices. They forcibly pump air into your vehicle&rsquo;s engine to increase power. <\/p>\n\n\n\n<p>Many modern turbocharged vehicles make use of a variable geometry turbocharger (VGT).  This type of turbocharger makes use of adjustable vanes that can open or close to vary the amount of boost pressure. Your vehicle&rsquo;s PCM can control the position of these vanes through an electronic actuator. Meanwhile, a dedicated position sensor is used to determine the <a href=\"https:\/\/www.carparts.com\/turbo-vane-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"turbo vane position\">turbo vane position<\/a>. <\/p>\n\n\n\n<p>On vehicles equipped with a traditional turbocharger or supercharger, a wastegate or bypass valve is used to control boost. On modern vehicles, the wastegate is operated by a PCM-controlled boost control solenoid. <\/p>\n\n\n\n<p>Boost pressure gets relieved by opening the wastegate. The PCM monitors this process using a boost pressure sensor. <\/p>\n\n\n\n<p>Regardless of whether your engine is equipped with a VGT or a traditional turbocharger\/supercharger, the code P0045 means a potential problem in your boost control circuit.<\/p>\n\n\n\n<p>If you&rsquo;re doing some research for a possible DIY fix for P0045, you can find more useful information in our technical discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p0046-code-turbo-supercharger-boost-control-a-circuit-range-performance\/#A_Closer_Look_at_Turbochargers_and_Superchargers\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"turbochargers and superchargers\">turbochargers and superchargers<\/a>.<\/p>\n\n\n\n<p>Users have reported p0045 for the following makes: Hino, Volkswagen, Isuzu, Nissan, and Honda.<\/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\/2020\/09\/cross-section-of-car-turbocharger-1024x683.jpeg\" alt=\"cross section of car turbocharger\" class=\"wp-image-16519\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/cross-section-of-car-turbocharger.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption> Turbochargers and superchargers are forced air induction devices. They forcibly pump air into your vehicle&rsquo;s engine to increase power.  <\/figcaption><\/figure>\n\n\n\n<p><em><strong>Note<\/strong>: The definition of code P0045 may 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 Possible Causes of the P0045 Code? <\/h2>\n\n\n\n<p>Here are the possible triggers of the P0045 fault code: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Malfunctioning boost pressure\/ turbocharger position sensor<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/bad-turbo-symptoms-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty turbocharger\">Faulty turbocharger<\/a> or supercharger<\/li><li>Defective control solenoid<\/li><li>Circuit problems<\/li><li>Malfunctioning PCM <\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0045 Code? <\/h2>\n\n\n\n<p>Here are the common symptoms to watch for in relation to this error code: <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Check engine light on\">Check engine light on<\/a><\/li><li>Insufficient or lack of boost resulting in poor engine performance<\/li><li>Detonation and engine damage caused by overboost<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0045 Code <\/h2>\n\n\n\n<p>Diagnosing a P0045 error code can prove challenging. There are several triggers of this trouble code, and it may sometimes be difficult to identify what is causing the problem. If you are not well versed in auto repair, it is best to leave the job to a mechanic.<\/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\/2020\/09\/illuminated-check-engine-light-dashboard-1024x681.jpeg\" alt=\"illuminated check engine light dashboard\" class=\"wp-image-16520\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard-1024x681.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard-300x199.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard-768x510.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard-150x100.jpeg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/illuminated-check-engine-light-dashboard.jpeg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>An illuminated check engine light is one of the symptoms of the P0045 code.  <\/figcaption><\/figure>\n\n\n\n<p>However, if you&rsquo;re a skilled automotive DIYer, and you want to take a shot at diagnosing this code yourself, we recommend consulting 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\">vehicle-specific repair manual<\/a>or an online repair database for proper diagnostic procedures. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0045 Code <\/h2>\n\n\n\n<p>Again, P0045 is a generic code. This means it may appear on various makes and models. However, this does not mean that there is a single fix that could work for all. For example, the diagnostic and repair procedures of a P0045 in a <a href=\"https:\/\/www.carparts.com\/nissan\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Nissan\">Nissan<\/a>may not resemble the process for a P0045 in a <a href=\"https:\/\/www.carparts.com\/volkswagen\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"VW\">VW<\/a>.  <\/p>\n\n\n\n<p>If you&rsquo;re not an experienced automotive DIYer, you can always opt to bring your vehicle to an auto repair shop for proper diagnosis and repair. However, if you&rsquo;re really determined to fix this code yourself, we suggest consulting a vehicle-specific repair manual. You may also subscribe to an online repair database.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a Quality Replacement Supercharger Kit to Resolve DTC P0045<\/h2>\n\n\n\n<p>If DTC P0045 is set, there are a number of possible causes, including a faulty supercharger. If you don&rsquo;t resolve the issue right away, you might find yourself facing poor engine performance until it&rsquo;s fixed. Thankfully, you can purchase a new supercharger kit from CarParts.com.<\/p>\n\n\n\n<p>CarParts.com aims to offer you the best experience when it comes to purchasing your automotive parts online. It only takes a few quick clicks to place your order on our easy-to-navigate website, and we provide an online checkout process that&rsquo;s both convenient and secure. Our friendly and helpful customer support team is ready to help should you have any questions. They&rsquo;re available around the clock and are always eager to assist. We also offer fast shipping, and will deliver your new parts to your doorstep in as fast as two business days.<\/p>\n\n\n\n<p>Don&rsquo;t delay once you know the supercharger is to blame for DTC P0045 being set in your vehicle. Place your order for a new <a href=\"https:\/\/www.carparts.com\/supercharger-kit\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"supercharger kit\">supercharger kit<\/a> today at CarParts.com.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\"> \n\n  \n\n    <!-- start of editable content --> \n\n\n    <a href=\"https:\/\/www.carparts.com\/turbocharger\" target=\"_blank\" aria-label=\"turbocharger\" rel=\"noopener\"> \n\n        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repd290103_1\" alt=\"turbocharger\"> \n\n<strong>Turbocharger<\/strong> \n\n    <\/a> \n  \n    <a href=\"https:\/\/www.carparts.com\/supercharger-kit\" target=\"_blank\" aria-label=\"supercharger kit\" rel=\"noopener\"> \n\n        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/a12r101_1\" alt=\"supercharger kit\"> \n\n<strong>Supercharger Kit<\/strong> \n\n    <\/a> \n\n    <a href=\"https:\/\/www.carparts.com\/turbo-vane-position-sensor\" target=\"_blank\" aria-label=\"turbo vane position sensor\" rel=\"noopener\"> \n\n        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/rb904235_1\" alt=\"turbo vane position sensor\"> \n\n<strong>Turbo Vane Position Sensor<\/strong> \n\n    <\/a> \n\n     <!-- end of editable content --> \n\n  \n\n<\/div>\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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Your vehicle equips several systems that are crucial to its operation and performance. It isn&rsquo;t uncommon for the components of&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":16518,"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":[929,930],"ppma_author":[2607],"class_list":{"0":"post-16517","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-supercharger-kit","9":"tag-turbocharger","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>P0045 Code: Turbo\/Supercharger Boost Control A Circuit Open - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn the definition, possible causes, and common symptoms of the diagnotic trouble cdoe P0045 with this short but informative guide.\" \/>\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\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0045 Code: Turbo\/Supercharger Boost Control A Circuit Open - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn the definition, possible causes, and common symptoms of the diagnotic trouble cdoe P0045 with this short but informative guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2020-09-22T12:30:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-27T15:48:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/vehicle-turbocharger-1.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0045-code-turbo-supercharger-boost-control-a-circuit-open\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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