{"id":534819,"date":"2026-07-17T18:00:18","date_gmt":"2026-07-17T22:00:18","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=534819"},"modified":"2026-07-17T18:00:18","modified_gmt":"2026-07-17T22:00:18","slug":"2014-scion-fr-s-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2014-scion-fr-s-pcm-replacement-guide\/","title":{"rendered":"2014 Scion FR\u2011S PCM and ECM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2014 Scion FR\u2011S PCM and ECM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">In the 2014 Scion FR\u2011S the Powertrain Control Module and Engine Control Module manage fuel delivery, ignition timing, and transmission coordination; a failure typically results from internal processor errors that disrupt communication with sensors and actuators, leading to diagnostic trouble codes and loss of driveability.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>Powertrain and engine computers share similar repair steps in this model.<\/li>\n<li>Factory labor times range from 0.5 to 0.7 hours per task.<\/li>\n<li>Relearn procedures are required after any module replacement.<\/li>\n<li>Common codes include P0601 and other internal processor faults.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When a 2014 Scion FR\u2011S begins to exhibit stalling, no\u2011start conditions, or unexpected transmission shifts, the underlying cause often points to the vehicle\u2019s control computers. Understanding how the Powertrain Control Module (PCM) and Engine Control Module (ECM) function, as well as what the repair process entails, can help you decide between a new OEM unit or a remanufactured alternative. This guide walks through the purpose of each module, typical labor requirements, necessary post\u2011install procedures, and practical steps to keep the electronics healthy. By the end, you\u2019ll know what to expect during service and how to protect the new hardware for reliable performance.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2014 Scion FR-S<\/h2>\n<p>The PCM in the 2014 Scion FR\u2011S serves as the central brain for powertrain management, interpreting sensor data to control fuel injection, ignition timing, and transmission shift logic. The ECM focuses specifically on engine functions, handling combustion parameters and emission controls. Both modules rely on internal processors that can develop faults, often reflected by internal trouble codes. Because the FR\u2011S uses tightly integrated electronic controls, a malfunction in either computer can cascade into drivability issues, from rough idle to complete shutdown. Maintaining proper operation is essential for fuel efficiency and emissions compliance. The vehicle\u2019s design makes the PCM and ECM interchangeable in many service steps, and a replacement <a href=\"https:\/\/www.fs1inc.com\/toyota-ecm-pcm-ecu-engine-computer\/scion-ecm-pcm-ecu-engine-computer\/fr-s-engine-computers.html\">FR\u2011S engine computer<\/a> often follows the same diagnostic path.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM and ECM are mounted within the engine compartment, typically secured to the firewall or a bracket near the intake manifold. Access usually requires removal of the air intake hose and a few fasteners, after which the module can be unplugged and swapped. The factory book time for removing and reinstalling the Powertrain Control Module is 0.7 hours, while the Engine Control Module requires the same 0.7 hours. After the unit is seated, the relearn procedures add an additional 0.5 hours for each module, reflecting the time needed to re\u2011establish sensor baselines and communication parameters.<\/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\/2014-scion-fr-s-pcm-service-figure.webp\" alt=\"2014 Scion FR-S PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2014 Scion FR-S.<\/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 2014 Scion FR-S<\/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> CERTIFICATION ECU (w\/ Smart Key System).<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the 4 connectors from the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the 2 nuts and ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> 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\">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\">0.7 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\">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\">0.7 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>Following a PCM or ECM replacement in the 2014 Scion FR\u2011S, the factory service procedure calls for a Powertrain Control Module Relearn lasting 0.5 hours and an Engine Control Module Relearn of 0.5 hours to synchronize the new hardware with existing vehicle parameters. Flagship One supplies a <a href=\"https:\/\/www.fs1inc.com\/2014-scion-fr-s-2-0l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> that arrives already calibrated, so those relearn steps are effectively completed at the factory, reducing shop time and minimizing the chance of post\u2011install errors.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM or ECM in the 2014 Scion FR\u2011S may present as intermittent stalling, loss of power, or an inability to start the engine. Drivers often notice the check engine light flashing and may retrieve codes such as <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">processor failure<\/a> indicating internal processor issues. Additional signs include erratic transmission shifting, rough idle, and occasional loss of communication with scan tools, all of which point to a compromised control module.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2014 Scion FR-S<\/h2>\n<p>The following internal trouble codes are commonly logged by the PCM and ECM in the 2014 Scion FR\u2011S:<\/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-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0604<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal RAM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0604-internal-control-module-random-access-memory-ram-error\/\" style=\"color:#0563C1\"><b><u>Full P0604 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-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<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<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>P060A<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Module-internal fault<\/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>P060B<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Module-internal fault<\/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\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P062F<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal EEPROM error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p062f-internal-control-module-eeprom-error\/\" style=\"color:#0563C1\"><b><u>Full P062F 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 Scion FR-S<\/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 fluctuations.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean all ground straps and connector pins regularly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use surge protectors when jump\u2011starting to prevent voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic codes promptly before they worsen.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure connector seals remain intact to keep moisture out.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid prolonged exposure to extreme temperatures that can stress electronics.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What are the typical labor times for replacing the PCM in a 2014 Scion FR\u2011S?<\/h3>\n<p>The factory book time for a Powertrain Control Module removal and installation on this model is 0.7 hours, plus an additional 0.5 hours for the required relearn procedure.<\/p>\n<h3>Can I use a used PCM from another Scion FR\u2011S year?<\/h3>\n<p>While the physical fit may be compatible, a used unit would still need to be programmed to match your vehicle\u2019s VIN and may not have the latest firmware updates, which could affect performance.<\/p>\n<h3>What does the P0604 code indicate for the 2014 Scion FR\u2011S?<\/h3>\n<p>P0604 signals an internal fault in the Powertrain Control Module\u2019s processor, often requiring module replacement or reprogramming to resolve.<\/p>\n<h3>Is a post\u2011install relearn always necessary after installing a new ECM?<\/h3>\n<p>Yes, the factory procedure includes a 0.5\u2011hour Engine Control Module Relearn to ensure the new unit correctly learns sensor baselines and communication settings.<\/p>\n<h3>How can I protect the PCM from future failures?<\/h3>\n<p>Regularly check the battery voltage, keep connectors clean, and address any warning lights quickly to reduce stress on the control modules.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When the PCM or ECM in your 2014 Scion FR\u2011S needs service, you can choose a brand\u2011new factory\u2011programmed unit or a high\u2011quality refurbished replacement. Both options restore the vehicle\u2019s electronic control functions, but a remanufactured part from Flagship One offers the same VIN\u2011specific programming without the need for additional relearn steps, helping you get back on the road faster.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2014-scion-fr-s-2-0l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2014 Scion FR-S<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/toyota-ecm-pcm-ecu-engine-computer\/scion-ecm-pcm-ecu-engine-computer\/fr-s-engine-computers.html\">Scion FR-S 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 2014 Scion FR\u2011S relies on its PCM and ECM for smooth operation, and timely repair or replacement keeps the car performing as intended. Consider a VIN\u2011programmed solution to simplify the process and ensure reliable engine control.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2014 Scion FR\u2011S shows no\u2011start or erratic performance, beware delayed repairs; proper PCM\/ECM work restores engine control and reliability.<\/p>\n","protected":false},"author":1,"featured_media":526105,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,462],"tags":[268,1577,463],"class_list":["post-534819","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-scion","tag-268","tag-fr-s","tag-scion"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2014 Scion FR\u2011S PCM and ECM 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-scion-fr-s-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 Scion FR\u2011S PCM and ECM Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2014 Scion FR\u2011S shows no\u2011start or erratic performance, beware delayed repairs; 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