{"id":66741,"date":"2022-02-15T21:58:17","date_gmt":"2022-02-16T05:58:17","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=66741"},"modified":"2024-12-19T05:16:14","modified_gmt":"2024-12-19T13:16:14","slug":"p2189-code-system-too-lean-at-idle-bank-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2189-code-system-too-lean-at-idle-bank-2\/","title":{"rendered":"P2189 Code: System Too Lean at Idle (Bank 2)"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column66741_2405df-3b > .kt-inside-inner-col,.kadence-column66741_2405df-3b > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column66741_2405df-3b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column66741_2405df-3b > .kt-inside-inner-col{flex-direction:column;}.kadence-column66741_2405df-3b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column66741_2405df-3b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column66741_2405df-3b{position:relative;}@media all and (max-width: 1024px){.kadence-column66741_2405df-3b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column66741_2405df-3b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column66741_2405df-3b inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-3b1ca4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-0d24b2\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1, .wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1[data-kb-block=\"kb-adv-heading66741_4c3c1d-c1\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1[data-kb-block=\"kb-adv-heading66741_4c3c1d-c1\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading66741_4c3c1d-c1[data-kb-block=\"kb-adv-heading66741_4c3c1d-c1\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading66741_4c3c1d-c1 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading66741_4c3c1d-c1\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P2189 code stands for &ldquo;System too lean at idle,&rdquo; which means the air-fuel mixture during idle has too much air and not enough fuel.<\/li>\n\n\n\n<li>Possible causes of the P2189 code include a faulty oxygen sensor, faulty gas cap seal, and a loose oil filler cap.<\/li>\n\n\n\n<li>Decreased engine performance, difficulty starting, and irregular idle are common symptoms of the P2189 code.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>If your vehicle has engine-related issues, then using an OBD-II scanner is a great way to diagnose the problem. If a P2189 diagnostic trouble code (DTC) appears in your scan tool, you may be wondering what it means. This article will help you figure out its definition, causes, and symptoms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2189 Code Mean?<\/h2>\n\n\n\n<p>The P2189 code means &ldquo;system too lean at idle.&rdquo; This means that the air-fuel mixture during idle is lean, which means it has too much air and not enough fuel. This issue can be caused by several faulty components. The powertrain control module (PCM) uses several sensors to determine the right air-fuel ratio to use to keep the engine running efficiently while it&rsquo;s idling. The PCM triggers the P2189 code when it cannot achieve the desired <a href=\"https:\/\/www.carparts.com\/blog\/what-is-a-good-air-fuel-ratio-chart-included\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"air-fuel ratio\">air-fuel ratio<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"617\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank-1024x617.jpg\" alt=\"refilling gas tank\" class=\"wp-image-66750\" style=\"width:1024px;height:617px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank-1024x617.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank-300x181.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank-768x463.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank-150x90.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/refilling-gas-tank.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The P2189 code may be triggered if the PCM cannot achieve the desired air-fuel ratio.<\/figcaption><\/figure>\n\n\n\n<p>The P2189 code also indicates that the problem is occurring in the engine&rsquo;s second bank.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p><em><strong>Note:<\/strong> The P2189 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Causes of the P2189 Code?<\/h2>\n\n\n\n<p>The P2189 code can be triggered by the following issues:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-o2-sensor-symptoms-causes-replacement-cost\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty oxygen sensor\">Faulty oxygen sensor<\/a><\/li>\n\n\n\n<li>Faulty <a href=\"https:\/\/www.carparts.com\/gas-cap-seal\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"gas cap seal\">gas cap seal<\/a><\/li>\n\n\n\n<li>Leaky or loose <a href=\"https:\/\/www.carparts.com\/oil-filler-cap\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oil filler cap\">oil filler cap<\/a><\/li>\n\n\n\n<li>Leaking air intake manifold<\/li>\n\n\n\n<li>Vacuum leak<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/symptoms-of-failing-mass-air-flow-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty mass airflow sensor\">Faulty mass airflow sensor<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/canister-purge-valve-solenoid-symptoms-replacement-cost\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty EVAP canister purge valve\">Faulty EVAP canister purge valve<\/a><\/li>\n\n\n\n<li>Exhaust system leak<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/the-top-6-signs-of-bad-fuel-injectors\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty fuel injector\">Faulty fuel injector<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/the-top-5-symptoms-of-a-bad-fuel-pressure-regulator\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty fuel pressure regulator\">Faulty fuel pressure regulator<\/a><\/li>\n\n\n\n<li>Faulty variable camshaft timing<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/the-top-4-signs-of-a-bad-fuel-filter\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Clogged fuel filter\">Clogged fuel filter<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/common-fuel-pump-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Worn out fuel pump\">Worn out fuel pump<\/a> producing low fuel pressure<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-spark-plug-symptoms\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Damaged or contaminated spark plug\">Damaged or contaminated spark plug<\/a><\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-1024x683.jpg\" alt=\"car fuel filter\" class=\"wp-image-66751\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/car-fuel-filter.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A clogged fuel filter can cause the P2189 code to be set.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2189 Code?<\/h2>\n\n\n\n<p>Here are some of the most common symptoms of the P2189 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Decreased engine performance<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Difficulty starting\">Difficulty starting<\/a><\/li>\n\n\n\n<li>Irregular idle<\/li>\n\n\n\n<li>Whistling noises<\/li>\n\n\n\n<li>Lower turbo boost numbers<\/li>\n\n\n\n<li>Fuel smell<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2189 Code<\/h2>\n\n\n\n<p>Identifying the root cause of the P2189 code can be difficult because there are a lot of parts that you need to check. Accessing certain components can be hard if you don&rsquo;t have the right tools or experience. We recommend consulting a professional if you want to properly diagnose the issue that&rsquo;s triggering the P2189 code.<\/p>\n\n\n\n<p>Check out this video If you want to learn more about the diagnostic process:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"HYUNDAI KIA SYSTEM LEAN CODES P2187 AND P2189\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/gUKKYYAUQQc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2189 Code<\/h2>\n\n\n\n<p>Unfortunately, there isn&rsquo;t a single umbrella solution for the P2189 code because each vehicle is designed differently. As a result, the repair process will vary greatly between vehicles. To determine the right repair procedure, you must first get an accurate diagnosis.<\/p>\n\n\n\n<p>Once you&rsquo;ve figured out the root cause of the P2189 code, you can look up credible online repair resources and how-to guides for possible solutions. Always <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"consult your vehicle&rsquo;s repair manual\">consult your vehicle&rsquo;s repair manual<\/a> when it comes to troubleshooting and repairing <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic codes\">diagnostic codes<\/a>.<\/p>\n\n\n\n<p>Consulting Chilton repair manuals can be useful. ALLDATA subscriptions are even better, as they provide detailed factory repair information for drivers who want to do repairs themselves. But if you aren&rsquo;t an expert in automotive repair, it might be best to leave it to a professional.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>If your vehicle has engine-related issues, then using an OBD-II scanner is a great way to diagnose the problem. If&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2189-code-system-too-lean-at-idle-bank-2\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":66749,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[],"ppma_author":[2607,2855],"class_list":{"0":"post-66741","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2189 Code: System Too Lean at Idle (Bank 2) - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"A lean air-fuel ratio can trigger the P2189 code. Learn more about its causes, symptoms, definition, as well as what to do in this article.\" \/>\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.carparts.com\/blog\/p2189-code-system-too-lean-at-idle-bank-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2189 Code: System Too Lean at Idle (Bank 2) - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"A lean air-fuel ratio can trigger the P2189 code. Learn more about its causes, symptoms, definition, as well as what to do in this article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2189-code-system-too-lean-at-idle-bank-2\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-02-16T05:58:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:16:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/driver-refilling-tank.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"998\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2189-code-system-too-lean-at-idle-bank-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2189-code-system-too-lean-at-idle-bank-2\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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