{"id":64853,"date":"2022-01-19T01:15:07","date_gmt":"2022-01-19T09:15:07","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=64853"},"modified":"2024-12-19T05:11:47","modified_gmt":"2024-12-19T13:11:47","slug":"p0a93-code-inverter-a-cooling-system-performance","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0a93-code-inverter-a-cooling-system-performance\/","title":{"rendered":"P0A93 Code: Inverter &#8220;A&#8221; Cooling System Performance"},"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-column64853_858d07-f6 > .kt-inside-inner-col,.kadence-column64853_858d07-f6 > .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-column64853_858d07-f6 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column64853_858d07-f6 > .kt-inside-inner-col{flex-direction:column;}.kadence-column64853_858d07-f6 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column64853_858d07-f6 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column64853_858d07-f6{position:relative;}@media all and (max-width: 1024px){.kadence-column64853_858d07-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column64853_858d07-f6 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column64853_858d07-f6 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-c2b631  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-8249a0\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading64853_f07a2f-90, .wp-block-kadence-advancedheading.kt-adv-heading64853_f07a2f-90[data-kb-block=\"kb-adv-heading64853_f07a2f-90\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading64853_f07a2f-90 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading64853_f07a2f-90[data-kb-block=\"kb-adv-heading64853_f07a2f-90\"] 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-heading64853_f07a2f-90 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading64853_f07a2f-90[data-kb-block=\"kb-adv-heading64853_f07a2f-90\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading64853_f07a2f-90 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading64853_f07a2f-90\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The diagnostic trouble code (DTC) P0A93 indicates &ldquo;Inverter &lsquo;A&rsquo; Cooling System Performance.&rdquo;<\/li>\n\n\n\n<li>The P0A93 code is a hybrid trouble code that applies to most hybrid vehicles with OBD-II, which includes vehicles manufactured after 1996.<\/li>\n\n\n\n<li>The powertrain control module (PCM) will log this code when it detects a problem with the inverter cooling system that triggers the high-voltage control module.<\/li>\n\n\n\n<li>Common causes of the P0A93 code are a coolant system leak in the hybrid cooling system and high-voltage coolant pump failure.<\/li>\n\n\n\n<li>The symptoms of a P0A93 code are an illuminated check engine light and overheating high-voltage system.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\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 codes (DTCs)\">Diagnostic trouble codes (DTCs)<\/a> can be challenging to figure out. If your vehicle is having problems and your OBD-II scanner shows a P0A93 code, you have to follow vehicle-specific diagnostic procedures to identify the possible causes of your DTC. In this article, you&rsquo;ll learn about the P0A93 code, its common symptoms, possible causes, and recommended fixes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0A93 Code Mean?<\/h2>\n\n\n\n<p>Code P0A93 stands for &ldquo;Inverter &lsquo;A&rsquo; Cooling System Performance.&rdquo; It&rsquo;s a hybrid trouble code that applies to most hybrid vehicles with OBD-II, which includes vehicles manufactured after 1996.<\/p>\n\n\n\n<p>A P0A93 code might mean that your powertrain control module (PCM) has detected a problem with your vehicle&rsquo;s cooling system. In general, hybrid vehicles utilize a separate inverter cooling system to maintain proper operating temperatures. Any issue with the cooling system might trigger your high voltage control module to send a message to the PCM to store the code.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-1024x683.jpg\" alt=\"dashboard of a hybrid car\" class=\"wp-image-64874\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-dashboard.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A P0A93 code might mean that your PCM has detected a problem with your hybrid vehicle&rsquo;s cooling system.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Dedicated Inverters in Hybrids and Electric Vehicles<\/h3>\n\n\n\n<p>Hybrids and electric vehicles (EV) use high voltage batteries that output DC current, but the motors that drive the wheels on these vehicles operate on AC current. Since DC has to be converted to AC for these motors to work, every electric motor on these platforms has its own dedicated inverter.<\/p>\n\n\n\n<p>The inverter requires very heavy electronics, to include IGBT transistors, and in doing the required work, these components generate a lot of heat that must be carried away by air or coolant.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"545\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-1024x545.jpg\" alt=\"sealed inverter in a toyota prius\" class=\"wp-image-80170\" style=\"width:1024px;height:545px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-1024x545.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-300x160.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-768x409.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-1536x818.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius-150x80.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/sealed-inverter-in-a-toyota-prius.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A sealed inverter in a Toyota Prius. Typically, code P0A93 will only appear on platforms using liquid-cooled inverters. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0A93 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 Common Causes of the P0A93 Code?<\/h2>\n\n\n\n<p>There are some issues that can trigger a P0A93 code. Make sure to thoroughly inspect your cooling system components for signs of wear and tear to get an accurate diagnosis. Here are some of the possible causes of the P0A93 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coolant system leak in the hybrid cooling system<\/li>\n\n\n\n<li>High voltage coolant pump failure<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-1024x683.jpg\" alt=\"checking obd 2 scanner\" class=\"wp-image-64875\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-2-scanner.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">If you have an OBD-II scanner and the necessary repair skills, you can probably troubleshoot a P0A93 code yourself, but make sure to consult your vehicle&rsquo;s repair manual to avoid making mistakes during this process.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0A93 Code?<\/h2>\n\n\n\n<p>The P0A93 code might share some symptoms with other hybrid trouble codes. However, if your PCM is only storing this particular code, you might observe these common symptoms.<\/p>\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=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li>\n\n\n\n<li>High voltage system may overheat<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0A93 Code<\/h2>\n\n\n\n<p>A P0A93 code can lead to other cooling system issues if it&rsquo;s not resolved. The following video can guide you through the general diagnostic procedures for troubleshooting a P0A493 code. However, we recommend doing additional research on your specific vehicle before attempting any repairs.<\/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=\"P0A93 2003 2004 2005 2006 2008 2009 Prius inverter pump failure fixed\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/uqBoCadKRq4?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 P0A93 Code<\/h2>\n\n\n\n<p>There&rsquo;s no one way to troubleshoot a P0A93 code because certain vehicles require specific diagnostic and repair instructions. What may work to fix a P0A493 code in a <a href=\"https:\/\/www.carparts.com\/toyota\/prius\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Prius\">Prius<\/a> may not work for a <a href=\"https:\/\/www.carparts.com\/lexus\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Lexus\">Lexus<\/a>. You&rsquo;ll have to find out the underlying cause (or causes) of your DTC to figure out the right fix.<\/p>\n\n\n\n<p>If you have an OBD-II scanner and the necessary repair skills, you can probably troubleshoot a P0A93 code yourself. Make sure to <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"consult your vehicle&rsquo;s repair manual\">consult your vehicle&rsquo;s repair manual<\/a> to avoid making mistakes during this process.<\/p>\n\n\n\n<p>There are plenty of credible OBD-II <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=\"resources available online\">resources available online<\/a>. ALLDATA&rsquo;s single-vehicle subscription is a great example. It contains all the information you need to troubleshoot your particular DTC. You can also look up service bulletins for your vehicle.<\/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>However, if you don&rsquo;t feel confident in your DIY skills, you can hire a certified mechanic to check your vehicle. They can perform the necessary tests and repairs on your vehicle, so you don&rsquo;t have to.<\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Diagnostic trouble codes (DTCs) can be challenging to figure out. If your vehicle is having problems and your OBD-II scanner&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0a93-code-inverter-a-cooling-system-performance\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":64873,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_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],"ppma_author":[2607,2985],"class_list":{"0":"post-64853","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":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0A93 Code: Inverter &quot;A&quot; Cooling System Performance - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Not sure what\u2019s causing a P0A93 code in your car? Get the information you need in this article. Read on for more.\" \/>\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\/p0a93-code-inverter-a-cooling-system-performance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0A93 Code: Inverter &quot;A&quot; Cooling System Performance - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Not sure what\u2019s causing a P0A93 code in your car? Get the information you need in this article. Read on for more.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0a93-code-inverter-a-cooling-system-performance\/\" \/>\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=\"2022-01-19T09:15:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:11:47+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/hybrid-car-logo.jpg\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0a93-code-inverter-a-cooling-system-performance\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0a93-code-inverter-a-cooling-system-performance\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/thecpteam\\\/\",\"sameAs\":\"https:\\\/\\\/www.facebook.com\\\/carpartscom, https:\\\/\\\/twitter.com\\\/CarPartscom, https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/, https:\\\/\\\/www.instagram.com\\\/carpartscom\\\/\"},{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"Richard McCuistian\",\"jobTitle\":\"ASE Master Automobile Technician\",\"description\":\"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. 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