{"id":531272,"date":"2026-07-18T18:37:45","date_gmt":"2026-07-18T22:37:45","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531272"},"modified":"2026-07-18T18:37:45","modified_gmt":"2026-07-18T22:37:45","slug":"2020-infiniti-qx60-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2020-infiniti-qx60-pcm-replacement-guide\/","title":{"rendered":"2020 Infiniti QX60 PCM Reset and Relearn Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2020 Infiniti QX60 PCM Reset and Relearn Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module in the 2020 Infiniti QX60 manages engine and transmission parameters. When it loses data or miscommunicates, the vehicle may stall, misfire, or fail to start.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM reset takes 0.5 hours, relearn 0.5 hours, both require the vehicle to be plugged in.<\/li>\n<li>ECM reset also 0.3 hours, relearn 0.5 hours, replacement 2.8 hours.<\/li>\n<li>P0605 indicates a PCM communication fault.<\/li>\n<li>Flagship One units come pre\u2011programmed, cutting factory programming steps.<\/li>\n<li>Relearn procedures must be performed after any replacement.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2020 Infiniti QX60 shows symptoms like a sudden stall, a misfire, or a check\u2011engine light that reads P0605, you may suspect the Powertrain Control Module or Engine Control Module is at fault. This guide explains what these modules do, how to access and replace them, and what steps are required afterward. By following the outlined process you can restore proper engine and transmission performance without the need for lengthy diagnostics or costly parts.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2020 Infiniti QX60<\/h2>\n<p>The Powertrain Control Module (PCM) in the 2020 Infiniti QX60 is the brain that coordinates engine speed, throttle response, and transmission shifts. It collects sensor data and adjusts fuel delivery, ignition timing, and shift points to keep the vehicle running efficiently. The Engine Control Module (ECM) focuses on engine\u2011specific functions such as fuel injection and spark timing. <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/infiniti-pcm-ecm-ecu-engine-computer\/qx60-engine-computers.html\">replacement engine computers for the QX60<\/a> The modules work together; when one loses calibration, the other may compensate, but the result is often a loss of performance or a safety warning. Understanding how each module behaves helps you identify which part needs attention when symptoms arise.<\/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 behind the driver\u2019s side dash, close to the steering column. Access requires removing the lower dash panel and disconnecting the power connector. The replacement procedure is rated at 2.8 hours and involves installing the new unit, reconnecting the harness, and securing it with the specified torque. The ECM sits in the engine bay, near the firewall, and its replacement is also rated at 2.8 hours. In both cases the technician must remove the old module, install the new one, and reconnect the wiring harness before proceeding to the relearn step.<\/p>\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 2020 Infiniti QX60<\/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 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 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\">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\">2.8 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<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\">2.8 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After the module replacement, the factory procedure calls for a relearn of engine and transmission parameters. Since Flagship One units arrive VIN\u2011programmed, the relearn step is already completed, so the technician can skip the manual calibration step and move directly to testing the vehicle\u2019s performance.<\/p>\n<p>Every <a href=\"https:\/\/www.fs1inc.com\/2020-infiniti-qx60-3-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">VIN-programmed replacement unit<\/a> from Flagship One arrives with these steps already completed.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the PCM or ECM fails, you might notice a range of issues. Common symptoms include a sudden stall while cruising, an engine misfire that triggers a P0300 code, or a loss of throttle response. The vehicle may also refuse to start, display a check\u2011engine light, or show a communication error. In the 2020 Infiniti QX60, the specific code <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">P0605<\/a> points to a PCM communication fault, often accompanied by intermittent electrical issues or a loss of power.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2020 Infiniti QX60<\/h2>\n<p>The 2020 Infiniti QX60 may generate internal trouble codes when the PCM or ECM experiences communication or calibration problems.<\/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 2020 Infiniti QX60<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the charging system within spec to avoid voltage spikes that can damage the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean all ground connections on the module housings.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Check the wiring harness for fraying or corrosion that could impair communication.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic codes promptly to prevent further degradation.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Maintain the integrity of connector seals to keep moisture out.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid exposing the vehicle to extreme temperatures when the module is removed.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How long does a PCM reset take on a 2020 Infiniti QX60?<\/h3>\n<p>A reset typically requires about 0.5 hours. The technician disconnects the battery, waits for the module to clear its memory, and reconnects the power.<\/p>\n<h3>What happens if I skip the relearn step after installing a new PCM?<\/h3>\n<p>Skipping the relearn can lead to inaccurate fuel and ignition maps, which may cause poor performance or increased emissions.<\/p>\n<h3>Is it safe to drive my QX60 while a P0605 code is present?<\/h3>\n<p>Driving is possible, but the vehicle may experience intermittent stalls or shifting issues. It is advisable to have the module checked promptly.<\/p>\n<h3>Do I need special tools to install the ECM in my 2020 QX60?<\/h3>\n<p>Standard automotive torque wrenches and a connector removal tool are sufficient; no specialized equipment is required.<\/p>\n<h3>Will a Flagship One PCM work with my 2020 QX60\u2019s existing hardware?<\/h3>\n<p>Yes, the replacement unit is designed to match the original module\u2019s connector and communication protocol, ensuring full compatibility.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If the PCM or ECM in your 2020 Infiniti QX60 is unreliable, you can opt for a repair that restores the original component or choose a refurbished replacement that offers similar performance. The refurbished units are carefully tested and come with a warranty, giving you confidence that your QX60 will return to full functionality.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2020-infiniti-qx60-3-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2020 Infiniti QX60<\/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\/infiniti-pcm-ecm-ecu-engine-computer\/qx60-engine-computers.html\">Infiniti QX60 module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Whether you repair or replace, addressing the PCM or ECM issues on your 2020 Infiniti QX60 promptly can restore smooth driving and prevent further complications. A reliable control module keeps your vehicle running efficiently.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2020 Infiniti QX60 stalls or misfires, a PCM reset or relearn may resolve the issue. Learn the steps, time estimates, and common symptoms.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,319],"tags":[676,320,1312],"class_list":["post-531272","post","type-post","status-publish","format-standard","hentry","category-car","category-infiniti","tag-676","tag-infiniti","tag-qx60"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2020 Infiniti QX60 PCM Reset 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\/2020-infiniti-qx60-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2020 Infiniti QX60 PCM Reset and Relearn Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2020 Infiniti QX60 stalls or misfires, a PCM reset or relearn may resolve the issue. 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