{"id":529144,"date":"2026-07-17T05:06:56","date_gmt":"2026-07-17T09:06:56","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=529144"},"modified":"2026-07-17T05:06:56","modified_gmt":"2026-07-17T09:06:56","slug":"2019-nissan-maxima-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2019-nissan-maxima-pcm-replacement-guide\/","title":{"rendered":"2019 Nissan Maxima PCM Replacement and Relearn Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2019 Nissan Maxima PCM Replacement and Relearn Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module in the 2019 Nissan Maxima coordinates ignition, fuel injection, and transmission shift logic. A failure can disrupt engine timing, fuel delivery, or transmission response, leading to performance loss or power loss.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM controls engine and transmission functions.<\/li>\n<li>A defective PCM can trigger misfire or stalling codes.<\/li>\n<li>Replacement requires 1.0 hours of labor.<\/li>\n<li>Relearning the PCM takes an additional 0.5 hours.<\/li>\n<li>The unit is VIN\u2011programmed, eliminating post\u2011install tuning.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2019 Nissan Maxima has begun to misfire, stall, or show odd shifting behavior, the issue might stem from the Powertrain Control Module. This article explains what the PCM does, why it is critical to your vehicle\u2019s operation, and how to replace it correctly. You\u2019ll learn the exact labor steps, the relearn process, and how Flagship One\u2019s VIN\u2011programmed units make the job simpler. By understanding these details, you can make an informed decision about repair versus replacement and ensure your Maxima returns to reliable performance.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2019 Nissan Maxima<\/h2>\n<p>The Powertrain Control Module is the central nervous system of the 2019 Nissan Maxima\u2019s engine and transmission. It interprets sensor data such as throttle position, engine temperature, and wheel speed to adjust fuel injection timing, ignition spark, and shift points. <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/maxima-engine-computers.html\">2019 Nissan Maxima Powertrain Control Module<\/a> When the PCM malfunctions, it can misread sensor inputs or send incorrect commands, resulting in erratic engine behavior or a loss of power. Because the PCM is integrated with both the Engine Control Module and transmission control logic, a fault in this unit can cascade to other systems, causing a broader range of symptoms. Proper replacement restores the precise coordination needed for smooth acceleration, efficient fuel use, and reliable gear changes.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM is located in the engine bay, near the firewall on the passenger side. Access requires removal of the engine cover and disconnecting the electrical harness. The labor book time for removal and installation is 1.0 hours. After mounting the new module, the installer must reset the PCM, which takes 0.3 hours, and then perform a relearn procedure that lasts 0.5 hours. These steps ensure the new unit is physically secured and functionally integrated with the vehicle\u2019s existing systems.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2019-nissan-maxima-pcm-service-figure.webp\" alt=\"2019 Nissan Maxima PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2019 Nissan Maxima.<\/figcaption><\/figure>\n<div style=\"background:#f7f9fc;border:1px solid #e2e8f2;border-radius:10px;padding:18px 24px;margin:18px 0\">\n<h3 style='margin-top:0'>How to Reach the PCM on the 2019 Nissan Maxima<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> front air duct.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> battery.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the harness connectors from the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> ECM nuts, and then remove ECM.<\/li>\n<\/ol>\n<p style='margin:10px 0 0 0'><em>Work with the ignition off, and treat the module as static-sensitive: avoid touching the connector pins at any point.<\/em><\/p>\n<\/div>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Operation<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Configuration<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Book Time<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.0 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.0 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Reset<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.3 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After installing the new PCM, the factory procedure calls for a reset followed by a relearn. Because Flagship One units arrive VIN\u2011programmed, the reset step is already complete and the relearn is performed automatically by the vehicle\u2019s onboard diagnostics. <a href=\"https:\/\/www.fs1inc.com\/2019-nissan-maxima-3-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">VIN\u2011programmed replacement unit<\/a> This eliminates the need for additional tuning or programming steps, saving time and reducing the risk of incomplete calibration.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the PCM fails, drivers of the 2019 Nissan Maxima may notice a sudden loss of power, stalling under load, or erratic shifting. Misfires and engine hesitation are common, and the scan tool may return a dead\u2011wire communication error. If the internal code P0605 is present, it indicates a PCM failure that has triggered a fault condition. <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">PCM Failure Code<\/a> Addressing the PCM promptly prevents further damage to the engine or transmission and restores the vehicle\u2019s performance.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2019 Nissan Maxima<\/h2>\n<p>The 2019 Nissan Maxima\u2019s PCM can generate internal trouble codes that help diagnose its health. The following table lists the codes documented for this vehicle.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Code<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Meaning<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Full Guide<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0605<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal ROM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\" style=\"color:#0563C1\"><b><u>Full P0605 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2019 Nissan Maxima<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the vehicle\u2019s charging system clean and within spec.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect all PCM connectors for corrosion or loose pins.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid exposing the engine bay to high voltage spikes from improper jump\u2011starting.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic codes quickly to prevent worsening of the PCM condition.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure all sealing gaskets around the PCM are intact.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Maintain regular fluid checks to keep the engine operating within design parameters.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What does the Powertrain Control Module do in my 2019 Nissan Maxima?<\/h3>\n<p>It manages engine timing, fuel injection, and transmission shift logic by processing data from various sensors. When it fails, these systems can lose coordination, leading to performance issues.<\/p>\n<h3>How long does it take to replace the PCM in a 2019 Nissan Maxima?<\/h3>\n<p>The labor book time for removal and installation is 1.0 hours, with an additional 0.5 hours for the relearn procedure.<\/p>\n<h3>Do I need a special programming tool after installing a new PCM?<\/h3>\n<p>No. Flagship One units come VIN\u2011programmed, so the factory reset and relearn steps are already completed during manufacturing.<\/p>\n<h3>What symptoms should I watch for that might indicate a PCM problem?<\/h3>\n<p>Stalling, misfires, erratic shifting, or a dead\u2011wire error on a scan tool can all point to PCM failure.<\/p>\n<h3>Can I skip the relearn step after installing a new PCM?<\/h3>\n<p>Skipping the relearn can leave the new module out of sync with the vehicle\u2019s sensors, potentially causing performance issues or safety risks.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>Whether you choose to repair the existing PCM or install a refurbished replacement, understanding the labor and relearn process helps you gauge the effort required. The 2019 Nissan Maxima\u2019s PCM replacement is straightforward with the right parts, and Flagship One\u2019s VIN\u2011programmed units streamline the process for a quick return to reliable driving.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2019-nissan-maxima-3-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2019 Nissan Maxima<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/maxima-engine-computers.html\">Nissan Maxima module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>If you\u2019re experiencing power loss or stalling in your 2019 Nissan Maxima, a PCM replacement is a viable solution. With the correct labor steps and a pre\u2011programmed unit, you can restore performance and confidence behind the wheel.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>When your 2019 Nissan Maxima stalls or misfires, a PCM failure may be the cause. Learn how to replace and relearn the unit safely and avoid costly downtime.<\/p>\n","protected":false},"author":1,"featured_media":526020,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,98],"tags":[790,413,412],"class_list":["post-529144","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-nissan","tag-790","tag-maxima","tag-nissan"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2019 Nissan Maxima PCM Replacement and Relearn Guide - Flagship One Blog<\/title>\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.fs1inc.com\/blog\/2019-nissan-maxima-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2019 Nissan Maxima PCM Replacement and Relearn Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"When your 2019 Nissan Maxima stalls or misfires, a PCM failure may be the cause. 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