{"id":532880,"date":"2026-07-17T16:25:54","date_gmt":"2026-07-17T20:25:54","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=532880"},"modified":"2026-07-17T16:25:54","modified_gmt":"2026-07-17T20:25:54","slug":"2020-chrysler-voyager-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2020-chrysler-voyager-pcm-replacement-guide\/","title":{"rendered":"2020 Chrysler Voyager PCM and ECM Relearn Procedures"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2020 Chrysler Voyager PCM and ECM Relearn Procedures<\/h1>\n<p class=\"hero-subtitle\">In the 2020 Chrysler Voyager the powertrain control module (PCM) and engine control module (ECM) manage fuel delivery, ignition timing and transmission shifting. A failure in either unit can trigger loss of engine power, erratic shifting, or communication loss with diagnostic tools, often accompanied by internal trouble codes such as P0601 or P0606.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>PCM relearn requires about half an hour of labor.<\/li>\n<li>ECM reset can be completed in roughly three\u2011tenths of an hour.<\/li>\n<li>Both modules are accessed near the air cleaner assembly.<\/li>\n<li>Factory procedures include specific relearn steps after replacement.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When a 2020 Chrysler Voyager experiences powertrain control issues, the repair often involves replacing the PCM or ECM. Understanding the function of these modules, their location, and the required post\u2011install procedures helps you make an informed decision. This guide explains what the modules do, how they are accessed, the labor involved, and why proper programming matters, so you can evaluate repair options with confidence.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2020 Chrysler Voyager<\/h2>\n<p>The PCM and ECM in a 2020 Chrysler Voyager act as the vehicle\u2019s central computers, interpreting sensor data to control fuel injection, ignition timing and transmission shift points. Their operation is critical for smooth acceleration and fuel efficiency. Because they communicate with each other, a fault in one can affect overall drivability. The vehicle often relies on these units to meet emissions standards and maintain performance. <a href=\"https:\/\/www.fs1inc.com\/chrysler-dodge-plymouth\/chrysler-pcm-ecm-ecu-engine-computer\/voyager-engine-computers.html\">replacement powertrain control modules for the 2020 Chrysler Voyager<\/a> are engineered to match the original specifications and ensure seamless integration.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The control modules sit beside the air cleaner assembly, making them reachable without major disassembly. Removing the PCM or ECM typically follows the factory removal procedure that provides access to the module adjacent to the air cleaner. Labor times listed in the service guide indicate 0.8 hours for a PCM removal and reinstall, and the same 0.8 hours for an ECM replacement. The process involves disconnecting the connector, unbolting the unit, and securing the new module in place.<\/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\/2020-chrysler-voyager-ecm-location-card-1.webp\" alt=\"2020 Chrysler Voyager PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">Typical PCM mounting area on the 2020 Chrysler Voyager (reference).<\/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 2020 Chrysler Voyager<\/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> the air cleaner body.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the three nuts securing the PCM to the PCM bracket.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Lift<\/b> the PCM off of the bracket and remove the PCM from the engine compart.<\/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 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\">0.8 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 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 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\">0.8 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 or ECM, the factory service requires a relearn or reset operation to calibrate the vehicle\u2019s systems. For the PCM, a relearn step takes about half an hour, while the ECM reset needs roughly three\u2011tenths of an hour. Flagship One units arrive pre\u2011programmed to the vehicle\u2019s VIN, so <a href=\"https:\/\/www.fs1inc.com\/2020-chrysler-voyager-3-6l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN\u2011programmed replacement unit<\/a> eliminates the need for these additional steps on most installations.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>Typical signs of a failing PCM or ECM in a 2020 Chrysler Voyager include a no\u2011start condition, rough idle, unexpected stalling, or loss of shift control. Diagnostic scans often reveal internal fault codes; for example, <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">processor communication error<\/a> may appear when the module cannot communicate properly. Drivers may also notice erratic engine performance or a complete loss of powertrain control.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2020 Chrysler Voyager<\/h2>\n<p>The following internal trouble codes have been documented for the 2020 Chrysler Voyager\u2019s PCM and ECM:<\/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>Protecting the PCM in Your 2020 Chrysler Voyager<\/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.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean ground connections regularly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid high\u2011voltage spikes from jump\u2011starts.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic codes promptly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep connector seals intact to prevent moisture intrusion.<\/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 Chrysler Voyager shows a P0606 code?<\/h3>\n<p>A P0606 code indicates a processor clock signal issue. You may need to inspect the PCM\/ECM connections and consider a module replacement if the fault persists after cleaning the connectors.<\/p>\n<h3>Can I replace the PCM in my 2020 Chrysler Voyager myself?<\/h3>\n<p>The PCM is accessible near the air cleaner, and the labor time is listed as 0.8 hours. However, proper programming is required after replacement, which typically involves a relearn procedure.<\/p>\n<h3>Is a factory\u2011programmed ECM necessary for my 2020 Chrysler Voyager?<\/h3>\n<p>Factory\u2011programmed ECMs are calibrated to your vehicle\u2019s VIN, ensuring the required reset steps are already applied, which can simplify the installation process.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When the PCM or ECM in your 2020 Chrysler Voyager needs attention, you can choose a direct repair with a new factory\u2011programmed unit or consider a refurbished replacement that meets the same specifications. Both options aim to restore reliable engine control while respecting the vehicle\u2019s original design.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2020-chrysler-voyager-3-6l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2020 Chrysler Voyager<\/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\/voyager-engine-computers.html\">Chrysler Voyager module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Addressing PCM or ECM issues in your 2020 Chrysler Voyager helps maintain performance and prevent further drivetrain problems. Evaluate your repair path carefully and consider a VIN\u2011programmed replacement to simplify the process.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2020 Chrysler Voyager shows PCM or ECM faults, beware of missed relearn steps; proper programming restores engine control and prevents driveability issues.<\/p>\n","protected":false},"author":1,"featured_media":521816,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,263],"tags":[676,56,564],"class_list":["post-532880","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-chrysler","tag-676","tag-chrysler","tag-voyager"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2020 Chrysler Voyager PCM and ECM Relearn Procedures - 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\/2020-chrysler-voyager-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 Chrysler Voyager PCM and ECM Relearn Procedures - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2020 Chrysler Voyager shows PCM or ECM faults, beware of missed relearn steps; proper programming restores engine control and prevents driveability issues.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2020-chrysler-voyager-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=\"2026-07-17T20:25:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2020-chrysler-voyager-ecm-location-card-1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2020 Chrysler Voyager PCM and ECM Relearn Procedures\",\"datePublished\":\"2026-07-17T20:25:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/\"},\"wordCount\":920,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2020-chrysler-voyager-ecm-location-card-1.webp\",\"keywords\":[\"2020\",\"Chrysler\",\"Voyager\"],\"articleSection\":[\"Car\",\"Chrysler\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2020-chrysler-voyager-pcm-replacement-guide\\\/\",\"name\":\"2020 Chrysler Voyager PCM and ECM Relearn Procedures - 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