{"id":16578,"date":"2021-12-02T01:37:00","date_gmt":"2021-12-02T09:37:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=16578"},"modified":"2026-02-10T20:29:11","modified_gmt":"2026-02-11T04:29:11","slug":"p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\/","title":{"rendered":"P003A Code: Turbocharger\/Supercharger Boost Control &#8220;A&#8221; Position Exceeded Learning Limit"},"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-column16578_cc0de7-52 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16578_cc0de7-52 > .kt-inside-inner-col,.kadence-column16578_cc0de7-52 > .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-column16578_cc0de7-52 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16578_cc0de7-52 > .kt-inside-inner-col{flex-direction:column;}.kadence-column16578_cc0de7-52 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16578_cc0de7-52 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16578_cc0de7-52{position:relative;}@media all and (max-width: 1024px){.kadence-column16578_cc0de7-52 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16578_cc0de7-52 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16578_cc0de7-52 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-e0c1e4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-b924ae\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading16578_840b74-b0, .wp-block-kadence-advancedheading.kt-adv-heading16578_840b74-b0[data-kb-block=\"kb-adv-heading16578_840b74-b0\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading16578_840b74-b0 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading16578_840b74-b0[data-kb-block=\"kb-adv-heading16578_840b74-b0\"] 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-heading16578_840b74-b0 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading16578_840b74-b0[data-kb-block=\"kb-adv-heading16578_840b74-b0\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading16578_840b74-b0 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading16578_840b74-b0\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagnostic Trouble Code (DTC) P003A stands for &ldquo;Turbocharger\/Supercharger Boost Control &ldquo;A&rdquo; Position Exceeded.&rdquo; This is triggered when the desired and actual turbo vane positions don&rsquo;t match during the learn procedure.<\/li>\n\n\n\n<li>The P003A code can be caused by a variable geometry turbo (VGT) turbocharger that&rsquo;s out of calibration, vane position sensor failure, turbocharger failure, or turbocharger vane control actuator solenoid failure.<\/li>\n\n\n\n<li>The issues causing this code can illuminate the check engine light and enable limp mode.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>One of the <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble codes\">diagnostic trouble codes<\/a> you may come across when you&rsquo;re scanning for DTCs is the P003A code. Here is some basic information about what this code means for your vehicle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P003A Code Mean?<\/h2>\n\n\n\n<p>Diagnostic Trouble Code (DTC) P003A stands for &ldquo;Turbocharger\/Supercharger Boost Control &ldquo;A&rdquo; Position Exceeded.&rdquo;<\/p>\n\n\n\n<p>The P003A is set by the powertrain control module (PCM) when it perceives that the desired and actual turbo vane positions do not match during the learn procedure. The PCM assumes that calibration has been lost or that another fault persists with the turbocharger.<\/p>\n\n\n\n<p>Turbochargers, <a href=\"https:\/\/www.carparts.com\/supercharger-kit\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"superchargers\">superchargers<\/a>, and other forced induction systems increase the amount of air introduced in the combustion chamber using energy generated from the engine. Intake boost pressure needs to vary and be adjusted within these systems to meet changing needs and prevent engine damage.<\/p>\n\n\n\n<p>A traditional turbocharger uses a wastegate to control boost pressure. But a relatively new type of turbocharger, which is called a variable geometry turbo (VGT), uses adjustable, internal vanes to vary boost pressure. VGTs are commonly used on diesel engines.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-1024x768.jpg\" alt=\"early variable geometry turborcharger\" class=\"wp-image-46491\" style=\"width:1024px;height:768px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-1024x768.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-300x225.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-768x576.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-1536x1152.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger-150x113.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/early-variable-geometry-turborcharger.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">An early variable geometry turborcharger controlled with an oil piston. Both GM and Ford used these turbochargers early on, and newer variable geometry turbochargers operate in a similar fashion. | Image source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>The PCM controls an actuator solenoid, which, in turn, controls the turbocharger vane position. The PCM or VGT control module performs a &ldquo;learn procedure&rdquo; to calibrate the turbocharger and detect faults within the VGT system.<\/p>\n\n\n\n<p>Loss of control over the boost may cause the vehicle to go into &ldquo;limp&rdquo; mode to avoid engine damage caused by over-boost conditions.<\/p>\n\n\n\n<p>The severity of a P003A code is moderate to high. A problem within the forced induction system may cause significant damage to your vehicle&rsquo;s internal engine components. It is in your best interest to get your vehicle checked by a mechanic after retrieving this error code.<\/p>\n\n\n\n<p>If you&rsquo;re planning a DIY fix for P003A, you can find more helpful technical information in our <a href=\"https:\/\/www.carparts.com\/blog\/p0046-code-turbosupercharger-boost-control-a-circuit-range-performance\/#A_Closer_Look_at_Turbochargers_and_Superchargers\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"in-depth discussion about turbochargers and superchargers\">in-depth discussion about turbochargers and superchargers<\/a>.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P003A 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<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 Possible Causes of the P003A Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>VGT turbocharger out of calibration (manual turbocharger vane position relearn procedure required)<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a> failure<\/li>\n\n\n\n<li>Turbocharger vane control actuator solenoid failure<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/turbo-vane-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Turbocharger vane position sensor\">Turbocharger vane position sensor<\/a> failure<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-turbo-symptoms-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Internal turbocharger failure\">Internal turbocharger failure<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P003A Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Check engine light is on\">Check engine light is on<\/a><\/li>\n\n\n\n<li>Engine enters &ldquo;limp home&rdquo; mode\n<ul class=\"wp-block-list\">\n<li>Low, erratic, and\/or abnormal power levels<\/li>\n\n\n\n<li>Overall poor drivability or intermittent symptoms<\/li>\n\n\n\n<li>Decreased throttle response<\/li>\n\n\n\n<li>Trouble driving uphill<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P003A Code<\/h2>\n\n\n\n<p>Testing for the underlying cause that has set off the P003A code can be hard, more so if you have limited tools and knowledge about auto repair. In most cases, it may be better to seek the help of a mechanic for an accurate diagnosis. You may also consult a repair manual or an online factory repair database for more information on the appropriate diagnostic procedure for this code.<\/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=\"What OBD2 Scanner Should You Buy\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/kzzROITueJs?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 P003A Code<\/h2>\n\n\n\n<p>The P003A code is a generic trouble code that may be logged in vehicles of various makes and models. Even if vehicles from different manufacturers present similar symptoms, the steps for their diagnosis and repair may differ. For instance, the repair process for a P003A <a href=\"https:\/\/www.carparts.com\/isuzu\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Isuzu\">Isuzu<\/a> code may not be as effective for a P003A <a href=\"https:\/\/www.carparts.com\/ford\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ford\">Ford<\/a> code.<\/p>\n\n\n\n<p>If you have extensive experience in DIY repair and would like to fix this code on your own, it may be helpful to refer to a vehicle-specific repair manual or get factory vehicle repair information from an online repair database.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Order a Replacement Turbocharger That Fits Your Car<\/h2>\n\n\n\n<p>Always get a turbocharger that fits your vehicle and ensure it remains in good condition while you drive. A turbocharger can increase fuel costs and cause more significant engine problems, so it&rsquo;s best to stop driving until you replace it. Fix the issue with a new turbocharger from CarParts.com.<\/p>\n\n\n\n<p><a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a> gets rid of the guesswork in shopping online for compatible turbochargers. We make purchasing auto parts online easier by providing accurate and detailed info about the fitment, enabling you to make an informed decision. Plug critical details like the year, make, model, and engine of your vehicle into our website&rsquo;s selector to see only products that best fit your car or truck. You can also rest assured about the quality of our parts, as we exclusively source them from trusted manufacturers.<\/p>\n\n\n\n<p>Why put up with a faulty turbocharger when ordering a replacement at CarParts.com takes only several clicks or taps? Shop for our products today and choose a <a href=\"https:\/\/www.carparts.com\/turbocharger\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"turbocharger\">turbocharger<\/a> that fits your vehicle!<\/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<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/turbocharger\" target=\"_blank\" aria-label=\"Turbocharger\" rel=\"noopener\">\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\/repd290102_1\" alt=\"Turbocharger\">\n<strong>Turbocharger<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/supercharger-kit\" target=\"_blank\" aria-label=\"Supercharger Kit\" rel=\"noopener\">\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\/gxllr088564_1\" alt=\"Supercharger Kit\">\n<strong>Supercharger Kit<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" aria-label=\"Engine Control Module\" rel=\"noopener\">\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\/a1721000_1\" alt=\"Engine Control Module\">\n<strong>Engine Control Module<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n\n<\/div>\n\n\n\n<div class=\"shop-project\">\n\n    <h2>Shop this Project<\/h2>\n\n    <ul class=\"shop-project-list\">\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/turbocharger\/replacement\/reps290104\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/reps290104_1\" alt=\"Replacement &ndash; New Turbocharger\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/reps290104_1\" alt=\"Replacement &ndash; New Turbocharger\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/turbocharger\/replacement\/reps290104\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; New Turbocharger\">Replacement &ndash; New Turbocharger<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$299.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/turbocharger\/replacement\/reps290104\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/supercharger-kit\/mopar\/mop68190237ab\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/mop68190237ab_1\" alt=\"Mopar&reg; &ndash; 68190237AB Supercharger Kit &ndash; Direct Fit\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/mop68190237ab_1\" alt=\"Mopar&reg; &ndash; 68190237AB Supercharger Kit &ndash; Direct Fit\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/supercharger-kit\/mopar\/mop68190237ab\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Mopar&reg; &ndash; 68190237AB Supercharger Kit &ndash; Direct Fit\">Mopar&reg; &ndash; 68190237AB Supercharger Kit &ndash; Direct Fit<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-0.svg\" alt=\"0 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$521.49<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/supercharger-kit\/mopar\/mop68190237ab\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/turbo-vane-position-sensor\/replacement\/rc29010001\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rc29010001_1\" alt=\"Replacement &ndash; Turbo Vane Position Sensor\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/rc29010001_1\" alt=\"Replacement &ndash; Turbo Vane Position Sensor\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/turbo-vane-position-sensor\/replacement\/rc29010001\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Turbo Vane Position Sensor\">Replacement &ndash; Turbo Vane Position Sensor<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-5.svg\" alt=\"5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$57.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/turbo-vane-position-sensor\/replacement\/rc29010001\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n            <\/ul>\n<\/div>\n\n\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>One of the diagnostic trouble codes you may come across when you&rsquo;re scanning for DTCs is the P003A code. Here&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":16586,"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":[2607,2985],"class_list":{"0":"post-16578","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 v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P003A Code: Turbocharger\/Supercharger Boost Control &quot;A&quot; Position Exceeded Learning Limit - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn all about the P003A code--what it means, its common causes and symptoms, and how to fix this diagnostic trouble code.\" \/>\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\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P003A Code: Turbocharger\/Supercharger Boost Control &quot;A&quot; Position Exceeded Learning Limit - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn all about the P003A code--what it means, its common causes and symptoms, and how to fix this diagnostic trouble code.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\/\" \/>\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:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2021-12-02T09:37:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-02-11T04:29:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/supercharger.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=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p003a-code-turbocharger-supercharger-boost-control-a-position-exceeded-learning-limit\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"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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Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust."},{"term_id":2985,"user_id":1646,"is_guest":0,"slug":"richardmccuistian","display_name":"Richard McCuistian, ASE Certified Master Automobile Technician","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png"},"author_category":"","user_url":"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/","last_name":"McCuistian","first_name":"Richard","job_title":"ASE Certified Master Automobile Technician","description":"<div class=\"auth-social-links\"><a href=\"https:\/\/www.linkedin.com\/in\/richard-mccuistian-2681891b\/\" class=\"btn\" rel=\"nofollow noopener\" target=\"_blank\" aria-label=\"linkedin\" aria-labelledby=\"linkedin\">LinkedIn<\/a><a href=\"https:\/\/www.youtube.com\/user\/McCuistian\" class=\"btn\" rel=\"nofollow noopener\" target=\"_blank\" aria-label=\"instagram\" aria-labelledby=\"instagram\">Youtube<\/a><\/div>\r\n\r\nRichard McCuistian grew up in Alabama learning from his father who ran an automotive repair shop. Richard has worked for nearly 50 years in the automotive field as a professional technician, an instructor, a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others (published every year since May 2000). He has developed training courses and written or edited training material for companies in the U.S. Canada, and the Netherlands, and even Bulgaria. He maintained an \u201cask a mechanic\u201d website for 10 years answering questions emailed to him from all over the world.\r\n\r\nRichard has an instructional automotive YouTube channel \u201cMcCuistian\u201d with 13,500 subscribers and over 1,300 videos. Much of his professional work requires photography and videography in shop environments, but Richard also enjoys taking pictures of landscapes, skyscapes, old barns and houses, small towns. He has produced a coffee table book of digital watercolors called \u201cMemories of South Alabama\u201d created from his personal photos, along with a dozen Christian fiction short original novels and a collection of short stories, all available in Kindle or softcover format. Richard has written a 2,500-word Bible study every week for the past 20 years and uses it to teach a small group at his church every Sunday morning.\r\n\r\n<strong>Credentials:<\/strong>\r\n\r\n<ul class=\"author-list\">\r\n<li><p>ASE Certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.<\/p><\/li>\r\n<li><p>Professional Mechanic\/Technician for 25 years with experience on diesel and gasoline engines, vehicles and equipment (including hydraulics).<\/p><\/li>\r\n<li><p>Spent 5 years in fleet maintenance, 20 years in independent shops and dealerships (VW, Mazda, Renault, Jeep, Ford, Lincoln), specializing in driveability and electronics for the last 14 years of his career at the same dealership.<\/p><\/li>\r\n<li><p>Senior Contributing Editor at Motor Age Magazine, first published in Motor Age in May of 2000 and every year since. He has won two International Automotive Media Awards for technical articles published in trade magazines.<\/p><\/li>\r\n<li><p>Has attended hundreds of hours of automotive training from OEMs including GM, Volkswagen, Mazda, Renault, Jeep, Chrysler, as well as additional training at events like KC Vision and MACS (Mobile Air Climate Systems Association).<\/p><\/li>\r\n<li><p>Taught college level auto mechanics for 19 years.<\/p><\/li>\r\n<li><p>Has written for automotive training companies (including course development work for training companies in Canada and the Netherlands) and has been hired to teach professional trade show technician courses at multiple training events in Texas and Alabama.<\/p><\/li>\r\n<li><p>While still teaching at the college level, Richard launched a new automotive program in Geneva, Alabama, setting up a dual enrollment department in a new building, organizing the shop and classroom, teaching morning classes to high school students for 2 years while still teaching at the college in the afternoon.<\/p><\/li>\r\n<li><p>Richard\u2019s college program at Lurleen B. Wallace Community College worked at professional shop speed during his tenure to prepare graduates for production level work in the real world.<\/p><\/li>\r\n<\/ul>"}],"_links":{"self":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/16578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/users\/1651"}],"replies":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/comments?post=16578"}],"version-history":[{"count":0,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/16578\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media\/16586"}],"wp:attachment":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media?parent=16578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/categories?post=16578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/tags?post=16578"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=16578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}