{"id":528541,"date":"2026-07-17T02:04:46","date_gmt":"2026-07-17T06:04:46","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=528541"},"modified":"2026-08-25T13:51:32","modified_gmt":"2026-08-25T17:51:32","slug":"2020-mitsubishi-outlander-phev-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2020-mitsubishi-outlander-phev-pcm-replacement-guide\/","title":{"rendered":"2020 Mitsubishi Outlander PHEV PCM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2020 Mitsubishi Outlander PHEV PCM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">In the 2020 Mitsubishi Outlander PHEV, the Powertrain Control Module (PCM) orchestrates engine, transmission, and hybrid battery functions. A failure can lead to loss of power, erratic shifting, or the MIL lighting, signaling a loss of communication between critical systems.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM replacement takes 1.1 hours.<\/li>\n<li>A relearn step of 0.5 hours follows replacement.<\/li>\n<li>The ECM also requires a 0.5-hour relearn.<\/li>\n<li>Avoid swapping multiple ECUs simultaneously to prevent KOS conflicts.<\/li>\n<li>Flagship One units come VIN\u2011programmed, eliminating post\u2011install coding.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When you notice a check engine light or an EV warning on your 2020 Mitsubishi Outlander PHEV, it often points to a communication issue with the Powertrain Control Module. Understanding how the PCM manages the hybrid drivetrain and what steps are needed to replace it can save you time and prevent future trouble. This guide explains the module\u2019s role, where it sits, the labor involved, and how to handle programming so you can return to reliable, efficient driving without unnecessary delays.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2020 Mitsubishi Outlander PHEV<\/h2>\n<p>The Powertrain Control Module in your 2020 Mitsubishi Outlander PHEV is the central brain that coordinates engine speed, transmission shifts, and battery management. When it fails, the vehicle may lose power, stall, or show error messages. <a href=\"https:\/\/www.fs1inc.com\/mitsubishi-pcm-ecm-ecu-engine-computer.html\">Mitsubishi Outlander PHEV PCM<\/a> is essential for maintaining the balance between the combustion engine and electric motor, ensuring that throttle input translates into smooth acceleration and that regenerative braking functions correctly. Because the PCM also monitors battery temperature and state of charge, a fault can trigger safety shutdowns or limit performance until the issue is resolved.<\/p>\n<\/div>\n<div class=\"info-section\">\n<div style=\"margin:36px 0;padding:46px 26px;background:#102844 url(https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/08\/fs1-engine-computer-collage-bg-1.webp) center\/cover no-repeat;border-radius:12px;text-align:center\">\n<p style=\"margin:0 0 10px;color:#ffd27a;font-size:14px;letter-spacing:2px;text-transform:uppercase\">2020 Mitsubishi Outlander PHEV<\/p>\n<p style=\"margin:0 auto 22px;max-width:560px;color:#ffffff;font-size:22px;font-weight:700;line-height:1.35\">OEM programmed replacements &mdash; plug &amp; play, no dealer visit.<\/p>\n<p><a href=\"https:\/\/www.fs1inc.com\/engine-control-modules.html?ref=blog-cta\" style=\"display:inline-block;background:#f0ad2d;color:#102844;font-weight:700;padding:14px 34px;border-radius:8px;text-decoration:none;font-size:16px\">Find yours by year, make &amp; model &rarr;<\/a><\/p>\n<p style=\"margin:14px 0 0;color:#c3d0dd;font-size:13px\">Free shipping &middot; Lifetime warranty<\/p>\n<\/div>\n<h2>What Replacing the PCM Involves<\/h2>\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\/2020-mitsubishi-outlander-phev-pcm-location-diagram.webp\" alt=\"2020 Mitsubishi Outlander PHEV PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">PCM mounting location on the 2020 Mitsubishi Outlander PHEV.<\/figcaption><\/figure>\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\">1.1 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 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 installing a new PCM, the factory requires a relearn cycle. Because Flagship One units arrive VIN\u2011programmed, the relearn step is already completed, so you simply need to perform a 0.5\u2011hour reset of the <a href=\"https:\/\/www.fs1inc.com\/engine-control-modules.html?ref=blog-ecm\">Engine Control Module<\/a> and a 0.5\u2011hour relearn of the same. <a href=\"https:\/\/www.fs1inc.com\/2020-mitsubishi-outlander-phev-2-0l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">VIN\u2011programmed replacement unit<\/a> eliminates the need for additional coding steps.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>Common signs that the PCM is at fault include a persistent MIL, the EV warning light staying on, or sudden loss of power during acceleration. You may also experience erratic shifting or a dead scan\u2011tool communication. If the code P0601 appears, it indicates a PCM\u2011ECM communication error, which often resolves after a proper relearn.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\n<p>The only applicable factory bulletin is #20-54-001, which addresses an inoperative main battery PTC heater that can trigger MIL and EV warning messages. Follow the bulletin\u2019s guidance to ensure the heater functions correctly after any PCM work.<\/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\"><b>20-54-001<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Technical Document &gt; Technical Service Bulletins &gt; Inoperative Main Battery PTC Heater With MIL<\/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 2020 Mitsubishi Outlander PHEV<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep the charging system clean and free of corrosion to avoid voltage spikes.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and secure all PCM connectors for good contact.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use a qualified jump\u2011starter to prevent over\u2011voltage during battery start.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any error codes immediately to prevent deeper system damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Regularly check the PCM\u2019s air\u2011intake and coolant passages for blockage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Maintain proper battery health to reduce stress on the hybrid electronics.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>What should I do if my 2020 Mitsubishi Outlander PHEV shows a MIL after a PCM replacement?<\/h3>\n<p>First, run a diagnostic scan to identify any active codes. If P0601 or similar codes appear, perform the relearn steps outlined in the guide. If the MIL remains, inspect the PCM connectors and consider a professional evaluation.<\/p>\n<h3>Can I replace the PCM and another ECU at the same time in my 2020 Mitsubishi Outlander PHEV?<\/h3>\n<p>It is generally not recommended to swap multiple ECUs together, as the KOS system may conflict. If more than one ECU needs replacement, swap one first and then register its ID with the scan tool before addressing the next unit.<\/p>\n<h3>How long will the relearn process take after installing a new PCM?<\/h3>\n<p>The relearn step for the PCM takes 0.5 hours, and the Engine Control Module also requires a 0.5\u2011hour relearn. These steps ensure the new PCM communicates correctly with all vehicle systems.<\/p>\n<h3>Do I need to re\u2011program the new PCM after installation?<\/h3>\n<p>Flagship One units come pre\u2011programmed with your VIN, so no additional programming is required beyond the standard relearn cycle.<\/p>\n<h3>What are the risks of not performing the relearn after a PCM replacement?<\/h3>\n<p>Skipping the relearn can lead to persistent MIL lights, erratic engine behavior, or even loss of power, as the new PCM may not be fully synchronized with the vehicle\u2019s network.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2020 Mitsubishi Outlander PHEV requires a PCM replacement, you have the option of a repair or a refurbished replacement. A refurbished unit from a trusted supplier can match the reliability of a new part while offering a cost advantage. Evaluate your vehicle\u2019s condition and choose the path that best aligns with your maintenance goals.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2020-mitsubishi-outlander-phev-2-0l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2020 Mitsubishi Outlander PHEV<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/mitsubishi-pcm-ecm-ecu-engine-computer.html\">Mitsubishi Outlander PHEV 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 your 2020 Mitsubishi Outlander PHEV, a correctly installed and relearned PCM restores seamless power delivery and reliable hybrid operation. Take the time to follow these steps and keep your vehicle running smoothly.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Your 2020 Mitsubishi Outlander PHEV may show a MIL or EV warning after a PCM replacement. Follow these steps to avoid complications and keep your hybrid running.<\/p>\n","protected":false},"author":1,"featured_media":520670,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,295],"tags":[676,296,1393],"class_list":["post-528541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-mitsubishi","tag-676","tag-mitsubishi","tag-outlander-phev"],"acf":{"sku":"","year":"","make":"","model":"","post_title":"","featured_image":null,"introduction":"","what_is_pcm_programming":"","signs_your_year_make_model_needs_pcm_programming":"","product_title":"","product_view_link":"","how_pcm_programming_works_for_year_make_model":"","engine_size":"","engine_size_1_url":"","engine_size_2":"","engine_size_2_url":"","description":"","body_reported_problems":"","body_analysis":"","brake_system_reported_problems":"","brake_system_analysis":"","heating_&_cooling_reported_problems":"","heating_&_cooling_analysis":"","drivetrain_reported_problems":"","drivetrain_reported_analysis":"","interior_electronics_reported_problems":"","interior_electronics_analysis":"","cooling_system_reported_problems":"","cooling_system_analysis":"","ignition_&_wiring_reported_problems":"","ignition_&_wiring_analysis":"","engine_repairs_reported_problems":"","engine_repairs_analysis":"","exhaust_system_reported_problems":"","exhaust_system_analysis":"","fuel_&_emissions_reported_problems":"","fuel_&_emissions_analysis":"","onboard_electronics_reported_problems":"","onboard_electronics_analysis":"","strange_sounds_&_leaks_reported_problems":"","strange_sounds_&_leaks_analysis":"","exterior_finish_reported_problems":"","exterior_finish_analysis":"","suspension_&_steering_reported_problems":"","suspension_&_steering_analysis":"","transmission_repairs_reported_problems":"","transmission_repairs_analysis":"","conclusion":"","image":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2020 Mitsubishi Outlander PHEV PCM Replacement Guide<\/title>\n<meta name=\"description\" content=\"How to replace the engine control module on a 2020 Mitsubishi Outlander PHEV: location, removal steps, and programming requirements.\" \/>\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\/2020-mitsubishi-outlander-phev-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2020 Mitsubishi Outlander PHEV PCM Replacement Guide\" \/>\n<meta property=\"og:description\" content=\"How to replace the engine control module on a 2020 Mitsubishi Outlander PHEV: location, removal steps, and programming requirements.\" \/>\n<meta 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