{"id":531107,"date":"2026-07-17T11:00:39","date_gmt":"2026-07-17T15:00:39","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=531107"},"modified":"2026-07-17T11:00:39","modified_gmt":"2026-07-17T15:00:39","slug":"2006-infiniti-m45-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2006-infiniti-m45-pcm-replacement-guide\/","title":{"rendered":"2006 Infiniti M45 Engine and Powertrain Control Module Overview"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2006 Infiniti M45 Engine and Powertrain Control Module Overview<\/h1>\n<p class=\"hero-subtitle\">In the 2006 Infiniti M45 the Engine Control Module (ECM) and Powertrain Control Module (PCM) manage fuel delivery, ignition timing, emission controls and transmission shifting. A failure typically disrupts engine start, causes erratic idle, or triggers diagnostic trouble codes such as P0605, indicating internal power\u2011supply issues within the module.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>ECM and PCM each require about a half\u2011hour for relearn after replacement.<\/li>\n<li>R&amp;R labor for the ECM is listed as 1.4\u202fhours, while PCM removal and install is 1.1\u202fhours for this model.<\/li>\n<li>Factory bulletins ITB10038, ITB09019 and ITB09006 address ECM reprogramming and power\u2011supply diagnostics.<\/li>\n<li>Flagship One units arrive VIN\u2011programmed, eliminating post\u2011install coding steps.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When a 2006 Infiniti M45 begins to exhibit no\u2011start conditions, stalling or unexpected transmission behavior, the engine and powertrain control modules are often the focus. Understanding how these computers operate, what the factory service information requires, and how a proper replacement is performed can save you time and unnecessary parts. This guide explains the role of the ECM and PCM in your vehicle, outlines the labor involved, and shows how Flagship One\u2019s pre\u2011programmed units fit into the repair process.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2006 Infiniti M45<\/h2>\n<p>The Engine Control Module in a 2006 Infiniti M45 continuously monitors sensor inputs and commands fuel injectors, spark timing and emission controls to keep the engine running smoothly. The Powertrain Control Module performs a similar function for the transmission, coordinating shift timing and torque converter lock\u2011up. Together they ensure optimal performance and emissions compliance. A malfunction can lead to loss of driveability and stored codes. The module\u2019s importance is underscored by the fact that <a href=\"https:\/\/www.fs1inc.com\/nissan-pcm-ecm-ecu-engine-computer\/infiniti-pcm-ecm-ecu-engine-computer\/m45-engine-computers.html\">2006 Infiniti M45 engine control module<\/a> replacement often requires specific relearn procedures after installation.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>Both the ECM and PCM are mounted within the engine compartment of the 2006 Infiniti M45, typically secured with bolts that require standard torque values. Removing the ECM involves disconnecting the wiring harness, unfastening the mounting bolts and extracting the unit. Reinstalling follows the reverse order, with the factory\u2011specified book time of 0.5\u202fhours for a relearn and 1.4\u202fhours for removal and replacement. The PCM follows a similar pattern, with a slightly shorter R&amp;R time of 1.1\u202fhours. Access steps are limited to disconnecting connectors and securing the module in its bracket.<\/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\">Engine Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">M35<\/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 Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">M45<\/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\">M35<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">M45<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">M35<\/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 Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">M45<\/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\">M35<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.4 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\">M45<\/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 installing a new ECM or PCM, the factory procedure calls for a relearn operation to sync the control unit with the vehicle\u2019s existing parameters. Flagship One supplies units that are already VIN\u2011programmed, so the required <a href=\"https:\/\/www.fs1inc.com\/2006-infiniti-m45-4-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> eliminates the need for additional coding steps at the shop.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing ECM or PCM in a 2006 Infiniti M45 may present as a no\u2011start condition, rough idle, unexpected stalling, or transmission shift irregularities. Diagnostic scans often reveal communication loss with the control unit or specific trouble codes. For example, the presence of <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0605-internal-control-module-read-only-memory-rom-error\/\">power supply fault<\/a> indicates an internal voltage problem within the module, which commonly results in loss of engine control and may trigger the check engine light.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2006 Infiniti M45<\/h2>\n<p>The following internal trouble codes are documented for the 2006 Infiniti M45 and relate directly to the engine and powertrain control modules:<\/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>Factory Service Bulletins Worth Knowing<\/h2>\n<p>Service bulletin ITB10038 outlines the interruption recovery steps required when the ECM reprogramming process is halted. ITB09019 provides the consult\u2011III procedure for completing an ECM reprogramming sequence. ITB09006 details the diagnostic approach for a MIL\u2011on condition associated with code P0603, which addresses ECM power\u2011supply concerns.<\/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\">Bulletin<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Subject<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">What It Addresses<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">EC &#8211; ENGINE CONTROL SYSTEM: ECM REPROGRAM INTERRUPTION RECOVERY PROCEDURE<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">EC &#8211; ENGINE CONTROL SYSTEM: CONSULT-III ECM REPROGRAMMING PROCEDURE<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">EC &#8211; ENGINE CONTROL SYSTEM: DIAGNOSIS PROCEDURE FOR MIL &amp;#x201c;ON&amp;#x201d; DTC P0603 ECM POWER <\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2006 Infiniti M45<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain a healthy charging system to avoid voltage drops that can stress the modules.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean ground connections and module connectors regularly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump\u2011start voltage spikes that may damage internal circuitry.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address stored diagnostic codes promptly to prevent further module degradation.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure connector seals remain intact to keep moisture out of the control unit.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What labor is required to replace the ECM on a 2006 Infiniti M45?<\/h3>\n<p>The factory book time lists 0.5\u202fhours for a relearn after replacement and 1.4\u202fhours for removal and installation of the ECM.<\/p>\n<h3>Does the PCM need a special programming step after replacement in a 2006 Infiniti M45?<\/h3>\n<p>Yes, the factory procedure includes a relearn operation, but a VIN\u2011programmed replacement from Flagship One eliminates that step.<\/p>\n<h3>Which service bulletins cover ECM reprogramming for the 2006 Infiniti M45?<\/h3>\n<p>Bulletins ITB10038 and ITB09019 address ECM reprogramming interruption recovery and the consult\u2011III procedure respectively.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When the ECM or PCM in your 2006 Infiniti M45 fails, you can choose a professional repair that includes a new factory\u2011programmed unit or consider a refurbished replacement that meets the same specifications. Both options restore the vehicle\u2019s control functions, but a pre\u2011programmed unit removes the need for post\u2011install coding, simplifying the repair workflow.<\/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\/nissancombo\/nissan-ns-h20b-ns-h20c-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2006 Infiniti M45\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2006 Infiniti M45 from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2006-infiniti-m45-4-5l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2006 Infiniti M45<\/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\/m45-engine-computers.html\">Infiniti M45 module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>A malfunctioning engine or powertrain control module can disrupt the reliability of your 2006 Infiniti M45. Understanding the required labor, service bulletins and preventive steps helps you make an informed decision about repair or replacement. Contact Flagship One for a VIN\u2011matched unit that fits your vehicle\u2019s needs.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2006 Infiniti M45 shows no\u2011start, stalling or powertrain codes, a failing ECM or PCM may be the cause. Learn symptoms, diagnostics and repair steps to keep your vehicle reliable.<\/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":[393,320,1465],"class_list":["post-531107","post","type-post","status-publish","format-standard","hentry","category-car","category-infiniti","tag-393","tag-infiniti","tag-m45"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2006 Infiniti M45 Engine and Powertrain Control Module Overview - 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\/2006-infiniti-m45-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2006 Infiniti M45 Engine and Powertrain Control Module Overview - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2006 Infiniti M45 shows no\u2011start, stalling or powertrain codes, a failing ECM or PCM may be the cause. 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