{"id":19782,"date":"2022-09-02T01:01:00","date_gmt":"2022-09-02T08:01:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=19782"},"modified":"2024-08-19T20:56:58","modified_gmt":"2024-08-20T03:56:58","slug":"p0603-code-internal-control-module-keep-alive-memory-kam-error","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0603-code-internal-control-module-keep-alive-memory-kam-error\/","title":{"rendered":"P0603 Code: Internal Control Module Keep Alive Memory (KAM) Error"},"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-column19782_8a297e-f4 > .kt-inside-inner-col,.kadence-column19782_8a297e-f4 > .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-column19782_8a297e-f4 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column19782_8a297e-f4 > .kt-inside-inner-col{flex-direction:column;}.kadence-column19782_8a297e-f4 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column19782_8a297e-f4 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column19782_8a297e-f4{position:relative;}@media all and (max-width: 1024px){.kadence-column19782_8a297e-f4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column19782_8a297e-f4 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column19782_8a297e-f4 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-3d8857  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-6c3456\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading19782_0f3998-e7, .wp-block-kadence-advancedheading.kt-adv-heading19782_0f3998-e7[data-kb-block=\"kb-adv-heading19782_0f3998-e7\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading19782_0f3998-e7 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading19782_0f3998-e7[data-kb-block=\"kb-adv-heading19782_0f3998-e7\"] 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-heading19782_0f3998-e7 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading19782_0f3998-e7[data-kb-block=\"kb-adv-heading19782_0f3998-e7\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading19782_0f3998-e7 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading19782_0f3998-e7\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DTC P0603 stands for &ldquo;Internal Control Module Keep Alive Memory (KAM) Error.&rdquo; It&rsquo;s logged when the KAM fails its self-test.<\/li>\n\n\n\n<li>A dead battery, an outdated PCM software, a malfunctioning PCM, and charging system issues are some of the issues that could trigger the P0603 code.<\/li>\n\n\n\n<li>Some symptoms of this trouble code include an activated check engine light, the engine stalling, and an illuminated ABS or traction control light.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The power control module (PCM) is an essential part of your vehicle system. For starters, it&rsquo;s in charge of controlling and monitoring several systems in your engine. But just like any other component, the PCM may also encounter some issues over time.<\/p>\n\n\n\n<p>The P0603 code is an engine trouble code related to an issue with the Internal Control Module Keep Alive Memory (KAM). Read on to learn more about KAM and the P0603 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0603 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) P0603 stands for &ldquo;Internal Control Module Keep Alive Memory (KAM) Error.&rdquo; It is logged once the PCM fails its KAM self-test.&nbsp; The code is triggered when the result of the self-test calculations are not as expected.<\/p>\n\n\n\n<p>To understand the code better, let&rsquo;s talk about computer memory and storage. Computers have two types of memory: ROM and RAM.<\/p>\n\n\n\n<p>Read-only memory (ROM) refers to the permanent memory stored in your vehicle&rsquo;s computer. This data cannot be changed and will remain as it is even if your <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a> loses power.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module-1024x819.jpg\" alt=\"nissan engine control module\" class=\"wp-image-19845\" style=\"width:1024px;height:819px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module-1024x819.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module-300x240.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module-768x614.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module-150x120.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/nissan-engine-control-module.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">P0603 code is logged once the PCM fails its KAM self-test.&nbsp; The code is triggered when the result of the self-test calculations are not as expected.<\/figcaption><\/figure>\n\n\n\n<p>Random-access memory (RAM) refers to the temporary memory that is stored in the PCM. This is where your PCM stores new data. RAM memory can be categorised as volatile or nonvolatile.<\/p>\n\n\n\n<p>Nonvolatile RAM memory will be retained even if you disconnect your car battery. However, data stored in a volatile RAM memory will be lost once you turn off the ignition. Keep alive memory (KAM) is a type of volatile RAM memory that can be wired straight to the battery so that its data won&rsquo;t be erased when you turn off the ignition.<\/p>\n\n\n\n<p>KAM is crucial because it stores data regarding drive cycles. This memory constantly changes based on driving and sensor inputs. The PCM regularly runs a routine self-check to monitor the performance of the KAM modules. Once the PCM perceives that the results of the mathematical calculations during self-tests are not what&rsquo;s expected, it will trigger the P0603 code.<\/p>\n\n\n\n<p>You can learn more about vehicles&rsquo; computers in our brief discussion about the <a href=\"https:\/\/www.carparts.com\/blog\/p0604-code-internal-control-module-random-access-memory-ram-error\/#A_Closer_Look_at_the_ECMPCMs_Random_Access_Memory_RAM\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ECM\/PCM&rsquo;s RAM\">ECM\/PCM&rsquo;s RAM<\/a>.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P0603 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 P0603 Code?<\/h2>\n\n\n\n<p>Here are the possible triggers of a P0603 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/5-signs-of-a-bad-battery\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dead battery\">Dead battery<\/a><\/li>\n\n\n\n<li>Wiring and\/or connection issues in the PCM&rsquo;s power or ground circuit<\/li>\n\n\n\n<li>PCM software in need of an update<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty PCM\">Faulty PCM<\/a><\/li>\n\n\n\n<li>Charging system issues<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of a P0603 Code?<\/h2>\n\n\n\n<p>Here are some of the common symptoms related to a P0603 code:<\/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=\"Activated check engine light\">Activated check engine light<\/a><\/li>\n\n\n\n<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 stalling\">Engine stalling<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Vehicle won&rsquo;t start\">Vehicle won&rsquo;t start<\/a><\/li>\n\n\n\n<li>Illuminated ABS or <a href=\"https:\/\/www.carparts.com\/blog\/why-is-my-traction-control-light-on-causes-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"traction control light\">traction control light<\/a><\/li>\n\n\n\n<li>OBD-II monitor issues<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0603 Code<\/h2>\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\/2020\/12\/engine-control-unit-1024x683.jpeg\" alt=\"engine control unit\" class=\"wp-image-19847\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-1024x683.jpeg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-300x200.jpeg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-768x512.jpeg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-1536x1024.jpeg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-scaled.jpeg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-600x400.jpeg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/12\/engine-control-unit-150x100.jpeg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Diagnosing a P0603 code isn&rsquo;t easy. There are several factors that may cause the issue, so it may be hard to identify which component is causing the problem.<\/figcaption><\/figure>\n\n\n\n<p>Diagnosing a P0603 code isn&rsquo;t easy. There are several factors that may cause the issue, so it may be hard to identify which component is causing the problem. For instance, you&rsquo;ll have to identify if it&rsquo;s caused by a faulty PCM or an issue with the PCM itself. If you don&rsquo;t have enough experience with auto repair, it&rsquo;s best to take your vehicle to an auto repair shop and have a mechanic do the diagnostic procedures for you.<\/p>\n\n\n\n<p>However, if you prefer to diagnose this code yourself, we recommend consulting vehicle <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manuals or online repair databases\">repair manuals or online repair databases<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0603 Code<\/h2>\n\n\n\n<p>P0603 is a generic trouble code, which means it may appear on various makes and models. However, even if this code is generic, there is no universal solution for all vehicles. For example, repair steps that worked for a P0603 on a <a href=\"https:\/\/www.carparts.com\/blog\/nissan-altima-reliability-and-common-problems\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Nissan Altima\">Nissan Altima<\/a> may not work for a P0603 on a <a href=\"https:\/\/www.carparts.com\/ford\/f-350\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ford F-350\">Ford F-350<\/a>.<\/p>\n\n\n\n<p>If you don&rsquo;t have enough experience and tools to get the job done, we suggest taking your vehicle to an auto repair shop for proper diagnosis and repair. However, if you decide to fix this code yourself, we recommend consulting a vehicle-specific repair manual or subscribing to an online repair database.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a Replacement Battery<\/h2>\n\n\n\n<p>In addition to triggering DTC P0603, a dead battery also prevents your vehicle from starting and causes your engine to stall. This can leave you stranded at the worst possible time. To avoid this, it&rsquo;s best to replace your vehicle&rsquo;s faulty battery as soon as you can. Thankfully, CarParts.com has your back.<\/p>\n\n\n\n<p>Here at CarParts.com, we want to enable you to order online with confidence. That&rsquo;s what our customer-centered guarantees are for. Our price-match guarantee ensures that you&rsquo;re always getting the best deals when you shop with us. If you find a CarParts.com-listed product on a competitor site for cheaper, let us know. We&rsquo;ll be happy to meet or beat their price on the spot. We also have a lifetime replacement guarantee for our loyal customers. The battery you order from us can be sent back at the end of its lifetime, and we&rsquo;ll issue you a refund for your next purchase on our site.<\/p>\n\n\n\n<p>Don&rsquo;t get stuck in the middle of nowhere. Resolve DTC P0603 by purchasing a new <a href=\"https:\/\/www.carparts.com\/battery\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"battery\">battery<\/a> at CarParts.com today.<\/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>The power control module (PCM) is an essential part of your vehicle system. For starters, it&rsquo;s in charge of controlling&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0603-code-internal-control-module-keep-alive-memory-kam-error\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":19978,"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],"ppma_author":[2607,2985],"class_list":{"0":"post-19782","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 v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0603 Code: Internal Control Module Keep Alive Memory (KAM) Error - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Did your scan tool read a P0603 code? Learn more about its possible causes and common symptoms with the help of this article. 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\/p0603-code-internal-control-module-keep-alive-memory-kam-error\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0603 Code: Internal Control Module Keep Alive Memory (KAM) Error - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Did your scan tool read a P0603 code? Learn more about its possible causes and common symptoms with the help of this article. 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