{"id":532808,"date":"2026-07-17T16:23:03","date_gmt":"2026-07-17T20:23:03","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=532808"},"modified":"2026-07-17T16:23:03","modified_gmt":"2026-07-17T20:23:03","slug":"2009-chrysler-300-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2009-chrysler-300-pcm-replacement-guide\/","title":{"rendered":"2009 Chrysler 300 PCM Replacement Guide &#8211; FS1inc"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2009 Chrysler 300 PCM Replacement Guide &#8211; FS1inc<\/h1>\n<p class=\"hero-subtitle\">The Powertrain Control Module in your 2009 Chrysler 300 serves as the central computer managing engine and transmission operations. This unit processes sensor data to control fuel delivery, ignition timing, and shifting. When internal circuits fail, your vehicle may experience drivability problems ranging from poor performance to complete driveability loss.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The Powertrain Control Module manages critical engine and transmission functions in your 2009 Chrysler 300<\/li>\n<li>This computer is mounted in the engine compartment, making access relatively straightforward<\/li>\n<li>Book time for replacement labor is approximately 1 hour, with additional time for relearn procedures<\/li>\n<li>Factory bulletins document specific driveability concerns affecting this model<\/li>\n<li>Module-internal trouble codes may indicate the PCM itself has failed<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2009 Chrysler 300 exhibits drivability problems such as stalling, hard starting, or unusual engine behavior, the Powertrain Control Module may be the source. This computer handles essential engine and transmission operations, and its failure can affect nearly every aspect of how your vehicle runs. Recognizing the signs of potential PCM failure, understanding the replacement process, and knowing what programming is required afterward helps you make informed repair decisions. This guide covers the role of this control unit in your Chrysler 300, practical considerations for replacement, and how factory service information applies to your specific vehicle.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2009 Chrysler 300<\/h2>\n<p>The Powertrain Control Module acts as the central nervous system for your 2009 Chrysler 300&#8217;s engine and drivetrain. This computer continuously processes inputs from numerous sensors located throughout the engine bay to calculate optimal fuel delivery, spark timing, and transmission shift points. In a vehicle with the 2.7L engine, the module must balance performance demands with emissions requirements while maintaining drivability across varying conditions. The module communicates with other vehicle systems through the controller area network, coordinating operations between the engine and automatic transmission. When this computer malfunctions, you may experience symptoms ranging from subtle performance changes to complete driveability failure. Flagship One provides replacement engine computers for the 2009 Chrysler 300 that arrive ready for installation, eliminating the need for separate programming services.<\/p>\n<p>Flagship One keeps <a href=\"https:\/\/www.fs1inc.com\/chrysler-dodge-plymouth\/chrysler-pcm-ecm-ecu-engine-computer\/300m-engine-computers.html\">Chrysler 300 replacement engine computers<\/a> in stock for exactly this failure pattern.<\/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 is positioned in the engine compartment of your 2009 Chrysler 300, mounted in a location that allows relatively direct access for service work. Replacement involves disconnecting the vehicle battery, removing the existing module from its mounting location, transferring any necessary hardware such as brackets or heat shields, and reconnecting all electrical harnesses. The book time for removing and reinstalling the module is 1 hour, with an additional 0.5 hours for performing the required relearn procedure. After the new unit is installed, proper torque specifications must be followed when securing mounting hardware to ensure reliable operation and vibration resistance.<\/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\/2009-chrysler-300-pcm-location-diagram.webp\" alt=\"2009 Chrysler 300 PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">PCM mounting location on the 2009 Chrysler 300.<\/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 2009 Chrysler 300<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> and isolate the.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the cowl panel cover.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the bolt that secures.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the electrical.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the PCM and 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\">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\">1.0 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\">1.0 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 replacement Powertrain Control Module in your 2009 Chrysler 300, the factory service procedure requires performing a relearn process that allows the new computer to adapt to your specific engine. This procedure involves specific driving conditions that enable the module to calibrate its algorithms to your vehicle&#8217;s unique characteristics. The estimated time for this relearn procedure is 0.5 hours. Flagship One sends you a VIN-programmed replacement unit, which means the module arrives already configured with your vehicle&#8217;s specific identification and most factory settings. This pre-programming eliminates the need for dealer-level equipment or software that would otherwise be required to initialize the replacement module.<\/p>\n<p>Every <a href=\"https:\/\/www.fs1inc.com\/2009-chrysler-300-2-7l-engine-computer-pcm-ecm-ecu-programmed.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>Common failure symptoms for this module type in your 2009 Chrysler 300 include hard starting or no-start conditions, intermittent stalling, rough idle, and hesitation during acceleration. You may also experience transmission shifting problems, where the automatic transmission fails to shift smoothly or remains in a single gear. A persistent check engine light accompanied by various diagnostic trouble codes often appears, along with instances where diagnostic scan tools cannot communicate with the module. Specific fault codes like <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">P0601<\/a> internal memory fault may indicate degradation of the module&#8217;s internal circuitry, suggesting the computer itself requires replacement rather than repair of external components.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2009 Chrysler 300<\/h2>\n<p>The 2009 Chrysler 300 with the 2.7L engine may store module-internal trouble codes that point directly to computer failure. These codes indicate problems within the PCM itself rather than faults in external sensors or wiring. Two documented codes for this vehicle are P0601 and P0606, both of which suggest internal electronic issues requiring module replacement rather than conventional troubleshooting.<\/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-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0601<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal memory checksum error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1\"><b><u>Full P0601 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0606<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module processor failure<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1\"><b><u>Full P0606 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<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\"><b>18-021-13<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">18-021-13 Flash: Performance Derate Above 55 MPH Immediately After Start-Up When Accelerating A<\/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\"><b>18-023-10<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">18-023-10 Flash: Rough Idle On Start Up With Ambient Temperatures Below 50\u00b0 (10\u00b0 C)<\/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\"><b>18-032-11<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">18-032-11 Flash: MIL Illumination for P2181 &#8211; Cooling System Performance<\/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 2009 Chrysler 300<\/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 with properly regulated voltage to prevent electrical stress on the module<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep ground connections clean and secure at the PCM mounting location and body grounds throughout the vehicle<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting the vehicle when possible, as reverse polarity or voltage spikes can damage electronic modules<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address diagnostic trouble codes promptly rather than allowing the vehicle to operate with active faults<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and maintain connector seals to prevent moisture contamination at electrical connections<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Protect the engine compartment from excessive water exposure during pressure washing<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How do I know if my 2009 Chrysler 300 needs a new PCM or if another component is causing the problem?<\/h3>\n<p>Diagnosis requires systematic troubleshooting to rule out sensors, wiring, and grounds before concluding the PCM itself has failed. Using a scan tool capable of bidirectional communication helps verify module operation.<\/p>\n<h3>Will a used PCM from a salvage yard work in my Chrysler 300?<\/h3>\n<p>Salvage yard modules typically require dealer-level programming to function and may have unknown wear or damage. Units from suppliers like Flagship One arrive pre-programmed with your specific VIN, reducing installation complexity.<\/p>\n<h3>Do I need to drive my Chrysler 300 differently after PCM replacement?<\/h3>\n<p>The relearn procedure allows the new module to adapt to your engine. Normal varied driving conditions typically complete this process, though specific driving patterns may be outlined in factory service procedures.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>Deciding between dealer replacement and a professionally remanufactured module involves weighing costs, convenience, and turnaround time. Your 2009 Chrysler 300&#8217;s 2.7L engine has specific programming requirements that can complicate repairs when using non-programmed units. Flagship One offers an alternative that arrives ready to install, potentially reducing your overall repair time and expense. Consider your specific situation, budget, and timeline when evaluating whether to pursue PCM replacement 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\/jeep4plugblack\/jeep-4plugblack-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2009 Chrysler 300\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2009 Chrysler 300 from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2009-chrysler-300-2-7l-engine-computer-pcm-ecm-ecu-programmed.html\"><b>refurbished, VIN-programmed PCM for the 2009 Chrysler 300<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/chrysler-dodge-plymouth\/chrysler-pcm-ecm-ecu-engine-computer\/300m-engine-computers.html\">Chrysler 300 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 is essential to how your 2009 Chrysler 300 operates, managing both engine and transmission functions from its location in the engine compartment. Understanding replacement labor requirements, programming needs, and documented factory concerns helps you approach this repair with confidence. Flagship One provides replacement modules configured for your specific vehicle, potentially simplifying what could otherwise be a complex repair process for your Chrysler 300.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Powertrain Control Module failure in your 2009 Chrysler 300 may cause stalling, no-start conditions, and check engine lights. Learn about replacement options.<\/p>\n","protected":false},"author":1,"featured_media":520167,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,263],"tags":[264,265,56],"class_list":["post-532808","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-chrysler","tag-264","tag-265","tag-chrysler"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2009 Chrysler 300 PCM Replacement Guide - FS1inc - 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\/2009-chrysler-300-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2009 Chrysler 300 PCM Replacement Guide - FS1inc - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Powertrain Control Module failure in your 2009 Chrysler 300 may cause stalling, no-start conditions, and check engine lights. 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