{"id":531177,"date":"2026-07-17T11:03:26","date_gmt":"2026-07-17T15:03:26","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531177"},"modified":"2026-07-17T11:03:26","modified_gmt":"2026-07-17T15:03:26","slug":"2013-infiniti-qx56-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2013-infiniti-qx56-pcm-replacement-guide\/","title":{"rendered":"2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module (PCM) in the 2013 Infiniti QX56 manages engine and transmission functions. Failure may cause drivability issues, no-start conditions, or stored trouble codes like P0605, often linked to internal memory faults or electrical problems.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM controls critical engine and transmission operations in your QX56.<\/li>\n<li>Replacement typically requires 1.1 hours of labor, plus an additional 0.5 hours for relearn procedures.<\/li>\n<li>A faulty PCM may trigger symptoms like stalling, misfires, or an internal control module memory error.<\/li>\n<li>Flagship One provides VIN-programmed units, eliminating the need for post-install programming.<\/li>\n<li>Proper battery voltage and clean electrical connections help prevent premature PCM failure.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2013 Infiniti QX56 is experiencing unexplained stalling, rough idling, or a no-start condition, the Powertrain Control Module (PCM) may be the culprit. This critical component acts as the brain of your vehicle\u2019s engine and transmission, coordinating fuel delivery, ignition timing, and shift points. When it fails, symptoms can range from subtle drivability issues to complete immobilization. Understanding the role of the PCM, recognizing failure signs, and knowing the replacement process can save you time and frustration. This guide explains what the PCM does in your QX56, how to identify potential failures, and what to expect during repairs\u2014including labor times and post-replacement procedures. Whether you\u2019re diagnosing a persistent trouble code or preparing for a replacement, you\u2019ll gain clarity on how this module impacts your vehicle\u2019s performance and reliability.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2013 Infiniti QX56<\/h2>\n<p>In the 2013 Infiniti QX56, the Powertrain Control Module (PCM) is a dual-purpose computer that oversees both engine and automatic transmission functions. It continuously monitors inputs from sensors\u2014such as the mass airflow sensor, throttle position sensor, and oxygen sensors\u2014to adjust fuel injection, ignition timing, and shift scheduling in real time. This ensures optimal power delivery, fuel efficiency, and emissions compliance. The PCM also communicates with other vehicle systems, including the body control module and anti-lock braking system, to maintain smooth operation. A failure in this module can disrupt these processes, leading to poor performance, reduced fuel economy, or even a vehicle that won\u2019t start. Because the QX56 relies heavily on precise electronic control, a faulty PCM often triggers drivability issues that mimic mechanical problems. When replacement becomes necessary, <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/infiniti-pcm-ecm-ecu-engine-computer\/qx56-engine-computers.html\">replacement engine computers for the Infiniti QX56<\/a> are available to restore full functionality without the need for extensive reprogramming, provided they are pre-configured for your vehicle\u2019s VIN.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM in the 2013 Infiniti QX56 is located in the engine bay, typically mounted near the firewall or on the driver\u2019s side inner fender. Accessing it requires removing the plastic engine cover and possibly disconnecting nearby components like the air intake duct or battery terminals. Replacement involves unbolting the module, disconnecting the wiring harness, and installing the new unit. The factory labor time for removing and reinstalling the PCM is 1.1 hours. After installation, the module must be relearned to the vehicle, which adds another 0.5 hours of labor. Torque specifications for the mounting bolts are critical to prevent damage to the module or its housing, though exact values are not always published. Proper grounding and secure electrical connections are essential to avoid intermittent faults or communication errors with the scan tool.<\/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\">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\">1.1 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\">1.1 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After replacing the PCM in your 2013 Infiniti QX56, the factory procedure requires a relearn process to synchronize the new module with the vehicle\u2019s existing systems. This typically involves using a scan tool to reset adaptive values, clear stored codes, and recalibrate the engine and transmission parameters. The labor time for this procedure is 0.5 hours, in addition to the 1.1 hours for physical replacement. However, if you install <a href=\"https:\/\/www.fs1inc.com\/2013-infiniti-qx56-5-6l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a>, these steps are already completed at the supplier level, saving you time and potential diagnostic headaches. This pre-programming ensures the module is fully compatible with your QX56\u2019s engine, transmission, and emissions systems, allowing for immediate operation without additional dealer visits or tool rentals. Always verify that the replacement unit matches your vehicle\u2019s exact configuration to avoid compatibility issues.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM in the 2013 Infiniti QX56 may produce a variety of symptoms, some of which can be mistaken for mechanical or sensor-related issues. Common signs include intermittent stalling, especially at idle or during deceleration, as the module loses the ability to regulate fuel and ignition timing. You might also notice rough idling, hesitation under acceleration, or a sudden drop in fuel economy, as the PCM struggles to maintain optimal air-fuel ratios. In some cases, the vehicle may fail to start altogether, with no crank or no spark conditions, or it may crank but not fire due to incorrect fuel injector pulses. Transmission shifting problems, such as delayed or harsh gear changes, can also occur if the PCM\u2019s transmission control functions are compromised. Another red flag is the illumination of the check engine light, often accompanied by <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">an internal control module read-only memory error<\/a>. This code specifically indicates a fault within the PCM\u2019s memory, which may cause erratic behavior or prevent the vehicle from running. Additionally, you might experience communication issues with a scan tool, where the PCM fails to respond or provides incomplete data. These symptoms can appear intermittently at first, making diagnosis challenging, but they typically worsen over time as the module degrades further.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2013 Infiniti QX56<\/h2>\n<p>The 2013 Infiniti QX56 may store specific trouble codes when the PCM experiences internal faults. These codes help pinpoint the source of the issue and guide the diagnostic process. Below is the documented module-internal trouble code 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 2013 Infiniti QX56<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain a stable charging system; weak or overcharged batteries can damage the PCM over time.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean electrical connectors and grounds regularly to prevent corrosion or poor contact.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting the vehicle with improper voltage, as voltage spikes can harm sensitive electronics.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address check engine lights or drivability issues promptly to prevent secondary damage to the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep the PCM\u2019s connector seals intact to prevent moisture intrusion, which can cause short circuits.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use a battery tender during long periods of inactivity to preserve voltage stability and module health.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Why does my 2013 Infiniti QX56 stall randomly, and could the PCM be the cause?<\/h3>\n<p>Random stalling in your QX56 can stem from several issues, including a failing PCM. The module controls fuel injection and ignition timing, so if it malfunctions, the engine may cut out unexpectedly. Other potential causes include faulty sensors, fuel pump issues, or electrical problems. A diagnostic scan can help determine if the PCM is storing trouble codes related to the stalling.<\/p>\n<h3>How do I know if my QX56\u2019s PCM needs to be replaced rather than reprogrammed?<\/h3>\n<p>Replacement is typically necessary if the PCM is physically damaged, corroded, or fails to communicate with a scan tool. If the module stores persistent internal memory errors like P0605, reprogramming may not resolve the issue. A professional diagnostic test can confirm whether the PCM is faulty or if another component is causing the symptoms.<\/p>\n<h3>What happens if I don\u2019t perform the PCM relearn procedure after replacement?<\/h3>\n<p>Skipping the relearn procedure may result in poor engine performance, rough shifting, or even a no-start condition. The PCM needs to recalibrate to your QX56\u2019s specific engine and transmission parameters. Without this step, the vehicle may run in a default mode, reducing fuel efficiency and drivability until the procedure is completed.<\/p>\n<h3>Can a weak battery cause my 2013 Infiniti QX56\u2019s PCM to fail?<\/h3>\n<p>Yes, a weak or failing battery can contribute to PCM issues. Low voltage may cause the module to operate erratically or store false trouble codes. Additionally, voltage spikes during jump-starts or charging can damage the PCM\u2019s internal circuitry. Always ensure your battery and charging system are in good condition to protect sensitive electronics.<\/p>\n<h3>Is it safe to drive my QX56 with a P0605 code stored in the PCM?<\/h3>\n<p>Driving with a P0605 code may be possible, but it\u2019s not recommended. This code indicates an internal memory fault in the PCM, which can lead to unpredictable behavior, such as stalling or poor performance. The vehicle may also fail emissions tests or enter a reduced-power mode. Addressing the issue promptly can prevent further damage or a sudden breakdown.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2013 Infiniti QX56 is exhibiting signs of PCM failure, you have options for repair or replacement. A refurbished or new PCM can restore full functionality, especially if it\u2019s pre-programmed for your vehicle\u2019s VIN. This eliminates the need for additional dealer programming and reduces downtime. Consider the labor costs and potential diagnostic fees when deciding between a repair attempt and a full replacement. A properly functioning PCM ensures your QX56 runs smoothly and reliably, so addressing the issue early can save you from more extensive repairs down the road.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2013-infiniti-qx56-5-6l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2013 Infiniti QX56<\/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\/qx56-engine-computers.html\">Infiniti QX56 module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>The Powertrain Control Module in your 2013 Infiniti QX56 plays a critical role in engine and transmission performance. Recognizing the signs of failure, understanding the replacement process, and taking preventive measures can help you avoid unexpected breakdowns. Whether you\u2019re dealing with a persistent trouble code or preparing for a replacement, addressing PCM issues promptly ensures your vehicle remains reliable and efficient. If you suspect a problem, consult a professional to diagnose and resolve the issue before it worsens.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Is your 2013 Infiniti QX56 stalling, failing to start, or throwing engine codes? Learn how PCM failure symptoms, replacement labor times, and relearn procedures affect your vehicle\u2019s performance and repair options.<\/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":[307,320,674],"class_list":["post-531177","post","type-post","status-publish","format-standard","hentry","category-car","category-infiniti","tag-307","tag-infiniti","tag-qx56"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2013 Infiniti QX56 PCM Failure: Symptoms, 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\/2013-infiniti-qx56-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Is your 2013 Infiniti QX56 stalling, failing to start, or throwing engine codes? Learn how PCM failure symptoms, replacement labor times, and relearn procedures affect your vehicle\u2019s performance and repair options.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2013-infiniti-qx56-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=\"2026-07-17T15:03:26+00:00\" \/>\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=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide\",\"datePublished\":\"2026-07-17T15:03:26+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/\"},\"wordCount\":1661,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"keywords\":[\"2013\",\"Infiniti\",\"Qx56\"],\"articleSection\":[\"Car\",\"Infiniti\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/\",\"name\":\"2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"datePublished\":\"2026-07-17T15:03:26+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2013-infiniti-qx56-pcm-replacement-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"2013 Infiniti QX56 PCM Failure: Symptoms, Replacement, and Relearn Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. 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