{"id":5609,"date":"2023-10-30T06:49:06","date_gmt":"2023-10-30T13:49:06","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=5609"},"modified":"2026-07-14T08:17:41","modified_gmt":"2026-07-14T15:17:41","slug":"i20-error-code-on-a-frigidaire-dishwasher-a-troubleshooting-guide","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/b\/i20-error-code-on-a-frigidaire-dishwasher-a-troubleshooting-guide\/","title":{"rendered":"i20 error code on a Frigidaire dishwasher: A troubleshooting guide"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Find out how you can fix the i20 error code on your Frigidaire dishwasher with our comprehensive troubleshooting guide. <\/p>\n","protected":false},"author":3,"featured_media":5614,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_aviaLayoutBuilderCleanData":"[av_image src='https:\/\/www.appliancepartspros.com\/b\/wp-content\/uploads\/2023\/10\/appcreator_Close-up_of_an_open_stainless_steel_dishwasher_in_a__74dc29b9-a879-45a7-b6ff-9bfc937a6468-960x430.png' attachment='5614' attachment_size='featured' copyright='' caption='' styling='' align='center' font_size='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation' hover='' appearance='' link='' target='' title_attr='' alt_attr='' lazy_loading='disabled' id='' custom_class='' av_element_hidden_in_editor='0' av_uid='av-locybnoy' admin_preview_bg=''][\/av_image]\r\n\r\n[av_team_member name='Matthew Mayo' job='October 30, 2023' src='' attachment='' attachment_size='' image_width='' description='' font_color='' custom_title='' custom_content='' lazy_loading='disabled' id='' custom_class='' av_uid='av-locxjdm2' admin_preview_bg=''][\/av_team_member]\r\n\r\n[av_textblock size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' id='' custom_class='' av_uid='av-locxigya' admin_preview_bg='']\r\n<!-- wp:paragraph -->\r\n\r\nIf your dishwasher stops mid-cycle and flashes an \u201ci20\u201d error code, it\u2019s letting you know there\u2019s a problem with the drain. Specifically, this message could mean there\u2019s slow or incomplete draining. Let\u2019s find out more about it and how to make it disappear!\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\n<a href=\"https:\/\/www.appliancepartspros.com\/b\/best-loading-techniques-for-your-dishwasher\/\"><strong>Read more: Best Loading Techniques For Your Dishwasher<\/strong><\/a>\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading -->\r\n\r\n[lwptoc numeration=\"romannested\"]\r\n<p style=\"font-size:14.5px;margin:14px 0;font-family:system-ui,-apple-system,sans-serif\"><a href=\"#app-safety-notes\">Full safety notes below<\/a><\/p>\n\n<h2><strong>What is the i20 error code?<\/strong><\/h2>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nOn dishwashers with electronic control boards, error codes starting with \u201ci\u201d signify an input fault. The i20 code specifically indicates a problem with drain performance.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\nThis error message pops up when the dishwasher fails to completely drain and lower the water level within the expected time. The control board, which monitors the duration between cycles, will throw an i20 code if it takes too long to empty the wash tub.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\n<a href=\"https:\/\/www.appliancepartspros.com\/b\/dishwasher-insulation-and-why-is-it-important\/\"><strong>READ MORE: What is Dishwasher Insulation and Why is it Important?<\/strong><\/a>\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading -->\r\n<h2><strong>Causes of i20 errors<\/strong><\/h2>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nSome of the most common issues that can disrupt normal draining and lead to i20 error codes include:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Clogged or blocked drain lines<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nIf there are any obstructions anywhere along the drain path\u2014from internal hoses to under-sink pipes\u2014they can slow or prevent water from being removed from the tub. Food debris is the most common source of drain line clogs.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Drain pump failure<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nIf the drain pump malfunctions or fails to activate, water won\u2019t empty from the tub correctly. Motors or impellers clogged by debris are some common causes of pump failures.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Power supply issues<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nLike other electrical faults, low voltage or voltage drops could affect the normal operation of the drain pump and throw error codes.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Incorrect drain hose setup<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nIf the drain hose was installed in a way that crimps hoses, lacks proper high loops, or disconnects from the garbage disposer, those issues can impede drainage and potentially trigger i20 codes.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Loose electrical connections<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nCorroded, loose, or damaged wiring between the control board and drain pump solenoid can cause intermittent electrical failures that disrupt pumping operations.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>Bad control board<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nThis is the least likely culprit, but a malfunctioning control board can misread water levels or times, causing false i20 errors.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading -->\r\n<h2><strong>How to troubleshoot the i20 error code\u00a0<\/strong><\/h2>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nNow that we have a better understanding of i20 drainage errors, let\u2019s walk through these steps\u00a0 to diagnose and repair your dishwasher:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>1. Clean out the filters<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Remove and thoroughly clean the coarse and fine filters<\/li>\r\n \t<li>Check below and around the bottom spray arm for any food debris or hard water buildup.<\/li>\r\n \t<li>Reinstall the filters once they\u2019re fully cleaned.<\/li>\r\n \t<li>Check that the filters are properly seated in place. If they\u2019re not,\u00a0 that can cause draining problems.<\/li>\r\n<\/ol>\r\n<!-- \/wp:list --> <!-- wp:heading {\"level\":3} -->\r\n<h3>2. Verify the drain hose setup<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nThe drain hose runs from the dishwasher pump, up through the cabinet and connects to the kitchen sink drain pipe. Check that:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:list -->\r\n<ul>\r\n \t<li>The drain hose isn\u2019t kinked, pinched, or bent sharply<\/li>\r\n \t<li>Hose clamps are tight with no leaks<\/li>\r\n \t<li>The hose is routed according to\u00a0 the manufacturer's instructions<\/li>\r\n \t<li>No obstructions are blocking the drain hose<\/li>\r\n \t<li>The drain hose is free from food debris or buildup<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:heading {\"level\":3} -->\r\n<h3>3. Test the drain pump<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Refer to your owner\u2019s manual for how to enter the diagnostic mode on the dishwasher control panel. Entering diagnostics lets you manually activate components to test their functions.<\/li>\r\n \t<li>Turn on the drain pump and make sure:<\/li>\r\n<\/ol>\r\n<!-- \/wp:list --> <!-- wp:list -->\r\n<ul>\r\n \t<li>You hear the pump motor humming and feel the vibration<\/li>\r\n \t<li>Water is actively flowing out of the drain hose.<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:paragraph -->\r\n\r\nYou can isolate pump issues by hooking up the drain hose externally while testing. If it drains fine while pumping out externally, that means there\u2019s an internal pump failure.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\nIf the drain pump doesn\u2019t activate or only moves a little water, it likely needs to be serviced or replaced.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>4. Clear clogs<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nIf you find a clog or blockage in the drain hoses, sink drain lines, or internal pump, make sure you clear the debris before proceeding.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\nSmall obstructions can slow drainage just enough to cause an i20 error.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>5. Check electrical connections<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nFaulty wiring can cause intermittent electrical issues that may delay or disrupt drainage. Here\u2019s how to check the wiring:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:list {\"ordered\":true} -->\r\n<ol>\r\n \t<li>Unplug the dishwasher<\/li>\r\n \t<li>Remove the junction box cover and access panel.<\/li>\r\n \t<li>Inspect the wiring connections between the control board and the drain pump. Look for:<\/li>\r\n<\/ol>\r\n<!-- \/wp:list --> <!-- wp:list -->\r\n<ul>\r\n \t<li>Loose or corroded terminals<\/li>\r\n \t<li>Damaged wire insulation<\/li>\r\n \t<li>Moisture incursion on connections<\/li>\r\n \t<li>Dislodged connectors<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:paragraph -->\r\n\r\n4. Clean and tighten any questionable connections.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>6. Inspect plumbing components<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nCheck for plumbing problems by:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:list -->\r\n<ul>\r\n \t<li>Removing the knockout plug on the garbage disposal if it\u2019s connected through it<\/li>\r\n \t<li>Examining the drain pump impeller and housing for obstructions<\/li>\r\n \t<li>Ensuring that no sharp bends or crimps are impeding the flow<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:heading {\"level\":3} -->\r\n<h3>7. Replace the drain pump<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nIf you\u2019ve checked connections, installed the hoses properly, and cleared clogs and the drain pump still isn\u2019t functioning, you\u2019ll likely need a replacement.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\nInstalling a brand new drain pump assembly will often fix persistent i20 errors related to drainage problems.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading {\"level\":3} -->\r\n<h3>8. Re-test after repair<\/h3>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nAfter completing any repairs, test the dishwasher\u2019s operation by:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:list -->\r\n<ul>\r\n \t<li>Running a short diagnostic or wash cycle<\/li>\r\n \t<li>Confirming the water drains fully without any i20 errors<\/li>\r\n \t<li>Verifying that no new error codes appear<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:paragraph -->\r\n\r\nThe dishwasher should now drain without issues and clear the original i20 code. Consider running a second wash cycle to make sure everything is working correctly.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\n<a href=\"https:\/\/www.appliancepartspros.com\/b\/how-to-clean-a-dishwasher\/\"><strong>READ MORE: How to Clean a Dishwasher<\/strong><\/a>\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading -->\r\n<h2><strong>How to prevent i20 drain errors<\/strong><\/h2>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nCatching drainage problems quickly helps to prevent odor issues and leaks resulting from backflow. Here are some tips:\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:list -->\r\n<ul>\r\n \t<li>Regularly clean filters and spray arms<\/li>\r\n \t<li>Inspect and clean the drain pump screen<\/li>\r\n \t<li>Use a drain cleaner monthly to keep lines clear<\/li>\r\n \t<li>Avoid overloading the dishwasher with large or bulky items<\/li>\r\n \t<li>Make sure all hoses are correctly installed<\/li>\r\n \t<li>Quickly address any plumbing issues you find under the sink<\/li>\r\n<\/ul>\r\n<!-- \/wp:list --> <!-- wp:paragraph -->\r\n\r\nCatching drainage problems quickly helps prevent odor issues and leaks resulting from backflow.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:heading -->\r\n<h2><strong>More information<\/strong><\/h2>\r\n<!-- \/wp:heading --> <!-- wp:paragraph -->\r\n\r\nThanks for reading! We hope this guide helped you troubleshoot and fix the i20 error on your dishwasher. If you need replacement parts, visit us at<a href=\"https:\/\/www.appliancepartspros.com\/\"> <strong>AppliancePartsPros.com<\/strong><\/a>. Once you're there with your model number, you can search for parts for your dishwasher or your other appliances. You can also chat with a pro, speak with our customer service team, and find more guides on our DIY blog.\r\n\r\n<!-- \/wp:paragraph --> <!-- wp:paragraph -->\r\n\r\nBe sure to<a href=\"https:\/\/www.youtube.com\/@appliancepartspros\/videos\"> <strong>subscribe to our YouTube channel<\/strong><\/a> for free video tutorials and<a href=\"http:\/\/facebook.com\/appliancepartspros\"> <strong>follow us on Facebook<\/strong><\/a>, <a href=\"https:\/\/twitter.com\/applpartspros\"><strong>Twitter<\/strong><\/a> and <a href=\"https:\/\/instagram.com\/appliancepartspros?igshid=OGQ5ZDc2ODk2ZA==\"><strong>Instagram<\/strong><\/a> for updates.\r\n\r\n<!-- \/wp:paragraph -->\n\n<div id=\"app-safety-notes\" style=\"border:1px solid #E6E6E6;border-radius:8px;overflow:hidden;margin:22px 0;font-family:system-ui,-apple-system,sans-serif\"><div style=\"background:#1C437C;color:#fff;padding:9px 16px;font-weight:700;font-size:15px\">\u26a1&nbsp;Electrical safety \u2014 before you start<\/div><ul style=\"margin:0;padding:14px 20px 14px 38px;font-size:15px;line-height:1.6;color:#1A1A1A;background:#fff\"><li style=\"margin:6px 0\"><b>Disconnect power<\/b> before you start \u2014 unplug it or switch off the breaker, and <b>confirm it's dead<\/b>.<\/li><li style=\"margin:6px 0\">Follow your <b>local electrical code<\/b>.<\/li><li style=\"margin:6px 0\">Anything involving <b>household wiring, outlets, or the breaker panel<\/b> itself is <b>licensed-electrician territory<\/b>.<\/li><\/ul><\/div>\n[\/av_textblock]\r\n\r\n[av_social_share title='Share this entry' buttons='' share_facebook='' share_twitter='' share_whatsapp='' share_pinterest='' share_reddit='' share_linkedin='' share_tumblr='' share_vk='' share_mail='' share_yelp='' yelp_link='https:\/\/www.yelp.com' style='' av-desktop-hide='' av-medium-hide='' av-small-hide='' av-mini-hide='' alb_description='' id='' custom_class='' 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