{"id":531184,"date":"2026-07-17T11:03:47","date_gmt":"2026-07-17T15:03:47","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531184"},"modified":"2026-07-17T11:03:47","modified_gmt":"2026-07-17T15:03:47","slug":"2014-infiniti-q70-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2014-infiniti-q70-pcm-replacement-guide\/","title":{"rendered":"2014 Infiniti Q70 PCM Reset &#038; Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2014 Infiniti Q70 PCM Reset &amp; Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">In the 2014 Infiniti Q70, the Powertrain Control Module (PCM) manages engine timing, fuel delivery, and transmission shifts. When it fails, the vehicle may lose power, misfire, or fail to start, indicating a critical control problem.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM reset takes 0.3 hours.<\/li>\n<li>PCM relearn takes 0.5 hours.<\/li>\n<li>Engine Control Module R&amp;R [GAS] requires 1.9 hours.<\/li>\n<li>Powertrain Control Module R&amp;R [GAS] requires 1.9 hours.<\/li>\n<li>Code P0605 indicates a PCM communication error.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>You may notice that your 2014 Infiniti Q70 is having trouble starting, stalling, or showing error codes on your diagnostic tool. These issues often point to problems with the vehicle\u2019s main computer, the Powertrain Control Module. Understanding what the PCM does, how it can fail, and what steps are necessary to fix it can help you decide whether a reset, relearn, or replacement is the right move. This guide explains the PCM\u2019s role, the labor involved in each repair option, and how our Flagship One replacement units come pre\u2011programmed to match your VIN, saving you time and effort.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2014 Infiniti Q70<\/h2>\n<p>The PCM in the 2014 Infiniti Q70 controls engine combustion, fuel injection, ignition timing, and transmission shift logic. It interprets sensor data and sends commands to actuators, ensuring smooth operation. When the PCM\u2019s software or hardware malfunctions, the vehicle may display no-start conditions, erratic shifting, or engine misfires. Replacing or resetting the PCM can restore normal operation. <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/infiniti-pcm-ecm-ecu-engine-computer\/q70h-engine-computers.html\">replacement powertrain computers for the 2014 Infiniti Q70<\/a> The module\u2019s failure is often due to electrical noise, connector corrosion, or internal component degradation, and addressing it promptly can prevent further damage to the engine or transmission.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What Replacing the PCM Involves<\/h2>\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\/2014-infiniti-q70-pcm-location-diagram.webp\" alt=\"2014 Infiniti Q70 PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">PCM mounting location on the 2014 Infiniti Q70.<\/figcaption><\/figure>\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\">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\">GAS<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.9 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\">1.6 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\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">GAS<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.9 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\">1.6 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After installing a new PCM, the factory procedure typically requires a relearn of the engine and transmission parameters. However, Flagship One replacement units arrive with the exact VIN programming already applied, so the relearn step is not necessary. The system will detect the new unit and complete any required initialization automatically. <a href=\"https:\/\/www.fs1inc.com\/2014-infiniti-q70-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">VIN\u2011programmed replacement unit<\/a> This eliminates the need for a separate diagnostic tool to re\u2011program the module.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>When the PCM in a 2014 Infiniti Q70 fails, drivers may experience a no\u2011start condition, hesitation, or sudden loss of power while driving. The vehicle\u2019s check\u2011engine light may illuminate, and a scan tool may pull a code such as <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">P0605<\/a>, which indicates a communication error with the module. Other symptoms include erratic shifting, misfires, or a rough idle. These signs often appear together, signaling that the PCM is not processing sensor data correctly.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2014 Infiniti Q70<\/h2>\n<p>The following internal trouble codes are documented for the 2014 Infiniti Q70 PCM. They provide clues to the specific issue affecting the module.<\/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 2014 Infiniti Q70<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the battery\u2019s charging system in good condition to avoid voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean the PCM connectors and grounds regularly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid using a jump\u2011starter with a high\u2011current output near the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any trouble codes promptly to prevent further damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Check that connector seals remain intact and free of moisture.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Maintain a clean engine bay to reduce static buildup.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What symptoms should I look for to know my 2014 Infiniti Q70 PCM needs replacement?<\/h3>\n<p>If the vehicle shows a no\u2011start condition, stalling, or a persistent P0605 code, it may indicate PCM failure. A professional diagnostic scan can confirm whether the module is the culprit.<\/p>\n<h3>How long will it take to replace the PCM in my 2014 Infiniti Q70?<\/h3>\n<p>The book time for a Powertrain Control Module replacement is 1.6 hours, while an Engine Control Module replacement takes 1.9 hours if the vehicle uses a gasoline variant.<\/p>\n<h3>Do I need to relearn the engine and transmission after installing a new PCM?<\/h3>\n<p>Flagship One units come pre\u2011programmed with your VIN, so the relearn step is not required. The vehicle will automatically initialize the new module.<\/p>\n<h3>Can a simple reset fix a PCM problem in the 2014 Infiniti Q70?<\/h3>\n<p>A reset can resolve temporary glitches, but if the PCM shows persistent codes or no-start conditions, replacement is usually necessary.<\/p>\n<h3>What safety precautions should I take when working on the PCM?<\/h3>\n<p>Disconnect the battery before removing the module, avoid touching the connectors with bare hands, and ensure the area is dry to prevent static discharge.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If you\u2019re dealing with PCM issues in your 2014 Infiniti Q70, you have the option of a professional reset, relearn, or a full replacement with a proven, pre\u2011programmed unit. Each path offers a reliable solution tailored to your vehicle\u2019s needs, allowing you to get back on the road with confidence.<\/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\/media\/wysiwyg\/googleshop\/nissannsh30e\/nissan-ns-h30e-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2014 Infiniti Q70\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2014 Infiniti Q70 from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2014-infiniti-q70-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2014 Infiniti Q70<\/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\/q70h-engine-computers.html\">Infiniti Q70 module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Your 2014 Infiniti Q70\u2019s PCM plays a crucial role in engine and transmission performance. Whether you choose a reset, relearn, or a Flagship One replacement, addressing the module promptly helps maintain your vehicle\u2019s reliability and safety.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2014 Infiniti Q70 shows no start or misfire symptoms, a PCM reset or replacement may be needed. Learn the steps and outcomes before you drive away.<\/p>\n","protected":false},"author":1,"featured_media":520407,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,319],"tags":[268,320,1471],"class_list":["post-531184","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-infiniti","tag-268","tag-infiniti","tag-q70"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2014 Infiniti Q70 PCM Reset &amp; Replacement 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\/2014-infiniti-q70-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2014 Infiniti Q70 PCM Reset &amp; Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2014 Infiniti Q70 shows no start or misfire symptoms, a PCM reset or replacement may be needed. 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