{"id":523545,"date":"2026-07-15T20:07:20","date_gmt":"2026-07-16T00:07:20","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=523545"},"modified":"2026-07-19T10:41:08","modified_gmt":"2026-07-19T14:41:08","slug":"2018-buick-encore-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2018-buick-encore-pcm-replacement-guide\/","title":{"rendered":"2018 Buick Encore ECM Replacement &#038; Relearning Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2018 Buick Encore ECM Replacement &amp; Relearning Guide<\/h1>\n<p class=\"hero-subtitle\">The engine control module (ECM) in your 2018 Buick Encore manages fuel delivery, ignition timing, and emissions systems. Failures may trigger drivability issues, no-start conditions, or persistent internal fault codes that prevent normal engine operation.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The ECM controls critical engine functions in the 2018 Buick Encore.<\/li>\n<li>Replacement typically requires 0.6 hours of labor, plus relearn procedures.<\/li>\n<li>Factory programming steps include capturing ECM data before removal.<\/li>\n<li>Common failure symptoms include stalling, misfires, and communication errors.<\/li>\n<li>Flagship One units arrive pre-programmed to your vehicle\u2019s VIN.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2018 Buick Encore begins stalling unexpectedly or refuses to start, the engine control module (ECM) may be at fault. This small but critical computer oversees fuel injection, ignition timing, and emissions systems, ensuring smooth operation. If it fails, you\u2019ll likely notice drivability issues or warning lights on the dashboard. Replacing the ECM involves more than just swapping parts\u2014factory procedures require specific programming steps to restore full functionality. Understanding the process helps you avoid unnecessary delays and ensures your vehicle runs reliably after the repair.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2018 Buick Encore<\/h2>\n<p>The engine control module in your 2018 Buick Encore acts as the brain of the engine, processing data from sensors to optimize performance. It adjusts fuel mixture, ignition timing, and idle speed while monitoring emissions systems to meet regulatory standards. A faulty ECM can disrupt these functions, leading to poor fuel economy, rough idling, or even a complete no-start condition. If replacement becomes necessary, <a href=\"https:\/\/www.fs1inc.com\/gm\/buick-pcm-ecm-ecu-engine-computer\/encore-engine-computers.html\">replacement engine computers for the Encore<\/a> are designed to integrate seamlessly with the vehicle\u2019s systems, though proper programming is essential to avoid further issues.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>In the 2018 Buick Encore, the ECM is typically mounted near the engine bay, often secured behind a protective cover or bracket. Replacing it involves disconnecting the battery, removing the module\u2019s electrical connector, and unbolting the unit. Labor time for removal and reinstallation is usually 0.6 hours. After installation, a relearn procedure of 0.5 hours is often required to synchronize the new module with the vehicle\u2019s systems. Always ensure the battery is fully charged before starting the process to prevent programming errors.<\/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\/2018-buick-encore-pcm-service-figure.webp\" alt=\"2018 Buick Encore PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">From the factory PCM removal procedure for the 2018 Buick Encore.<\/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 2018 Buick Encore<\/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> the negative battery cable.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the charge air cooler outlet air hose from the throttle body.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Disconnect<\/b> the electrical connectors from the engine control module.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Unclip<\/b> the engine control module bracket from the battery tray.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> any debris from around the control module connector.<\/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\">0.6 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\">0.6 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After replacing the ECM in your 2018 Buick Encore, the factory procedure requires capturing the original module\u2019s data before removal and performing a relearn process, which typically takes 0.5 hours. This ensures the new unit communicates correctly with the vehicle\u2019s sensors and systems. <a href=\"https:\/\/www.fs1inc.com\/2018-buick-encore-1-4l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">A VIN-programmed replacement unit<\/a> from Flagship One arrives ready to install, eliminating the need for additional programming steps and reducing the risk of calibration errors during the process.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing ECM in your 2018 Buick Encore may cause a range of symptoms, from intermittent stalling to a complete no-start condition. You might notice rough idling, poor acceleration, or warning lights on the dashboard. In some cases, the vehicle may enter a reduced-power mode to prevent further damage. Internal faults like <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">memory checksum error<\/a> often indicate the module is no longer processing data correctly, leading to erratic engine behavior or communication failures with the scan tool.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2018 Buick Encore<\/h2>\n<p>The 2018 Buick Encore may log several internal trouble codes when the ECM begins to fail. These codes typically point to memory corruption, communication errors, or processing faults within the module itself.<\/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-p0602-control-module-programming-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0602<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0602-control-module-programming-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Control module programming error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0602-control-module-programming-error\/\" style=\"color:#0563C1\"><b><u>Full P0602 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-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0603<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Keep-alive memory (KAM) error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0603-internal-control-module-keep-alive-memory-kam-error\/\" style=\"color:#0563C1\"><b><u>Full P0603 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-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>P062B<\/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<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0630<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module-internal fault<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0630-vin-not-programmed-incompatible-ecmpcm\/\" style=\"color:#0563C1\"><b><u>Full P0630 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>Factory service bulletin #PIP5373B addresses programming errors E4491 and E4423, which may occur during ECM updates in the 2018 Buick Encore. Another bulletin, #17-NA-242, outlines changes to the Service Programming System (SPS) that warn or prohibit reprogramming a module with its existing calibration. These updates highlight the importance of following the correct procedures to avoid complications during module replacement or software updates.<\/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\">Program ECM Error E4491\/E4423 &#8211; (Jun 11, 2018)<\/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\">Information on Changes to SPS that Warn\/Prohibit Reprogramming a Module With Its Current Calibr<\/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 2018 Buick Encore<\/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 prevent voltage spikes that may damage the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure all electrical connectors and grounds are clean and securely fastened.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting the vehicle with improper voltage or polarity.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any stored trouble codes promptly to prevent cascading issues.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep the ECM and its connectors protected from moisture and corrosion.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use a battery maintainer during long periods of inactivity to preserve system integrity.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How do I know if my 2018 Buick Encore ECM is failing?<\/h3>\n<p>Common signs include stalling, no-start conditions, or persistent warning lights. Internal fault codes like P0601 or P0603 often indicate ECM issues. A scan tool can confirm whether the module is communicating properly or logging errors.<\/p>\n<h3>Can I replace the ECM in my 2018 Buick Encore myself?<\/h3>\n<p>While the physical replacement is straightforward, the factory requires specific programming steps to ensure the new module works correctly. Without the proper tools and software, you may encounter drivability issues or communication errors.<\/p>\n<h3>What happens if I don\u2019t perform the ECM relearn procedure?<\/h3>\n<p>Skipping the relearn process may result in poor engine performance, rough idling, or even a no-start condition. The vehicle\u2019s systems rely on the ECM to adapt to sensor inputs, and a new module must be synchronized to function properly.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2018 Buick Encore is experiencing ECM-related issues, you have options. A repair shop can diagnose and replace the module, though labor and programming costs can add up. Alternatively, a pre-programmed replacement unit ensures compatibility and reduces installation time, allowing you to get back on the road with minimal hassle.<\/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\/gmtypeE78\/gm-pcm-typeE78-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2018 Buick Encore\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2018 Buick Encore from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2018-buick-encore-1-4l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2018 Buick Encore<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/gm\/buick-pcm-ecm-ecu-engine-computer\/encore-engine-computers.html\">Buick Encore 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 2018 Buick Encore relies on its ECM to manage critical engine functions, and a failing module can disrupt daily driving. Whether you opt for a repair or a pre-programmed replacement, addressing the issue promptly restores reliability. With the right approach, your vehicle will run smoothly for miles to come.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>If your 2018 Buick Encore stalls, won\u2019t start, or logs internal control module codes, the engine computer may need replacement. Learn symptoms, labor times, and factory programming steps to restore reliable operation.<\/p>\n","protected":false},"author":1,"featured_media":525263,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[359,258],"tags":[440,65,1246],"class_list":["post-523545","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-buick","category-car","tag-440","tag-buick","tag-encore"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2018 Buick Encore ECM Replacement &amp; Relearning 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\/2018-buick-encore-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2018 Buick Encore ECM Replacement &amp; Relearning Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"If your 2018 Buick Encore stalls, won\u2019t start, or logs internal control module codes, the engine computer may need replacement. 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