{"id":531214,"date":"2026-07-18T11:38:17","date_gmt":"2026-07-18T15:38:17","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531214"},"modified":"2026-07-18T11:38:17","modified_gmt":"2026-07-18T15:38:17","slug":"2016-infiniti-q70-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2016-infiniti-q70-pcm-replacement-guide\/","title":{"rendered":"2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module (PCM) in the 2016 Infiniti Q70 manages fuel delivery, ignition timing, and engine\u2011sensor communication. A failure can lead to poor performance, misfires, or a dead diagnostic scan. Replacing the PCM restores proper engine coordination.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM controls fuel, timing, and sensor data in the Q70.<\/li>\n<li>A faulty PCM causes stalling, misfires, and start\u2011up problems.<\/li>\n<li>Replacement requires removal of the old module and re\u2011installation.<\/li>\n<li>After installation the PCM is factory\u2011programmed for the vehicle.<\/li>\n<li>Typical labor time for removal and relearn is under two hours.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>You\u2019ve likely noticed that your 2016 Infiniti Q70 suddenly stalls or runs rough after a brief drive. These symptoms often point to a malfunctioning Powertrain Control Module, the central brain that synchronizes fuel, ignition, and sensor inputs. By understanding what the PCM does, why it can fail, and how a replacement restores reliable performance, you can make an informed decision about repair versus refurbished options. This guide walks through the replacement process, the expected labor, and what to look for after the job is done.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2016 Infiniti Q70<\/h2>\n<p>The PCM in the 2016 Infiniti Q70 is a sophisticated computer that integrates data from the engine, transmission, and various sensors to produce precise fuel and ignition commands. It also interprets diagnostic trouble codes and communicates with the onboard diagnostic port. When the PCM fails, the engine may misfire, hesitate, or even refuse to start. Replacing the PCM can restore smooth operation and reset any fault codes that were causing the vehicle to hesitate. <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/infiniti-pcm-ecm-ecu-engine-computer\/q70h-engine-computers.html\">replacement engine computers for Q70<\/a> is often the next step when the module shows signs of electrical or mechanical failure.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The Powertrain Control Module sits behind the passenger\u2011side dash, beneath the instrument panel. To replace it, the technician removes the dash trim, disconnects the battery, and then unscrews the module from its bracket. The replacement unit is installed in the same location and secured with the original mounting hardware. After installation, the technician reconnects the battery and completes a relearn procedure that takes roughly one hour. The total book time for removal, installation, and relearn is about 1.6 hours.<\/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\/2016-infiniti-q70-pcm-service-figure.webp\" alt=\"2016 Infiniti Q70 PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2016 Infiniti Q70.<\/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 2016 Infiniti Q70<\/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> the instrument lower cover.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the dash side finisher (LH).<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the ECM cover bolts and remove ECM cover.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> ECM harness connectors.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> ECM bracket bolt.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Slide<\/b> the ECM bracket upward and then remove ECM bracket with ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> ECM bracket bolts and separate ECM and ECM bracket.<\/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\">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>Once the new PCM is installed, the vehicle\u2019s factory software automatically loads the correct calibration for the specific VIN. Flagship One units arrive already VIN\u2011programmed, so the technician does not need to perform any additional programming steps. The relearn procedure, which normally requires a diagnostic tool, is still performed to ensure proper sensor calibration. <a href=\"https:\/\/www.fs1inc.com\/2016-infiniti-q70-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> is therefore unnecessary for the vehicle\u2019s post\u2011install calibration.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A 2016 Infiniti Q70 with a failing PCM may exhibit several tell\u2011tale signs. The engine might hesitate or stall during acceleration, the vehicle may have difficulty starting, or a misfire may trigger a diagnostic code. In some cases the scan tool will show a dead or weak signal, indicating communication failure between the PCM and the vehicle\u2019s network. If you notice any of these symptoms, the PCM could be at fault. <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">internal module error<\/a> is often the code that appears in the diagnostic log when the module\u2019s internal circuitry fails.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2016 Infiniti Q70<\/h2>\n<p>The codes below point to the PCM itself rather than to a sensor or circuit it monitors. Each one links through to its full diagnostic guide.<\/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 2016 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 all electrical connectors and grounds on the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use a properly rated jump\u2011starter to prevent sudden voltage surges.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly to avoid further damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Check the connector seals for moisture or corrosion.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure the vehicle\u2019s charging system is operating within spec.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How long does a PCM replacement take on a 2016 Infiniti Q70?<\/h3>\n<p>The average labor time for removing, installing, and relearning a new PCM on the 2016 Infiniti Q70 is around 1.6 hours, depending on shop efficiency.<\/p>\n<h3>Will my 2016 Infiniti Q70\u2019s PCM need reprogramming after replacement?<\/h3>\n<p>The PCM is factory\u2011programmed for the vehicle\u2019s VIN, so no additional programming is required beyond the standard relearn procedure.<\/p>\n<h3>What are the most common symptoms of a failed PCM in the 2016 Infiniti Q70?<\/h3>\n<p>Common symptoms include stalling, misfires, hesitation, and a dead diagnostic port signal. A P0605 code often accompanies these issues.<\/p>\n<h3>Can I use a refurbished PCM instead of a brand\u2011new one?<\/h3>\n<p>A refurbished PCM can be a cost\u2011effective alternative, but it should be sourced from a reputable supplier that offers a warranty and has been tested for reliability.<\/p>\n<h3>Is the PCM replacement covered under warranty for a 2016 Infiniti Q70?<\/h3>\n<p>Warranty coverage depends on the original manufacturer\u2019s terms and the age of the vehicle. It is best to check with the dealership or review the warranty documentation.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2016 Infiniti Q70 shows signs of PCM trouble, you have a clear path forward. A professional repair can replace the module and restore performance, while a refurbished replacement offers a budget\u2011friendly alternative. Both options require the same installation steps and yield the same post\u2011install reliability for your vehicle.<\/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 2016 Infiniti Q70\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2016 Infiniti Q70 from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2016-infiniti-q70-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2016 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>For the 2016 Infiniti Q70, a reliable PCM replacement can bring your vehicle back to its original performance. Consider your options and choose the solution that best fits your needs and budget.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2016 Infiniti Q70 stalls or misfires, a PCM issue may be the culprit. Learn the signs, replace the module, and get your vehicle running again.<\/p>\n","protected":false},"author":1,"featured_media":525755,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,319],"tags":[329,320,1471],"class_list":["post-531214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-infiniti","tag-329","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>2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control - 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\/2016-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=\"2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2016 Infiniti Q70 stalls or misfires, a PCM issue may be the culprit. Learn the signs, replace the module, and get your vehicle running again.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2016-infiniti-q70-pcm-replacement-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-18T15:38:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2016-infiniti-q70-pcm-service-figure.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1535\" \/>\n\t<meta property=\"og:image:height\" content=\"1087\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control\",\"datePublished\":\"2026-07-18T15:38:17+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/\"},\"wordCount\":1126,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2016-infiniti-q70-pcm-service-figure.webp\",\"keywords\":[\"2016\",\"Infiniti\",\"Q70\"],\"articleSection\":[\"Car\",\"Infiniti\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2016-infiniti-q70-pcm-replacement-guide\\\/\",\"name\":\"2016 Infiniti Q70 PCM Replacement: How to Restore Engine Control - 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