{"id":77273,"date":"2022-11-04T02:56:54","date_gmt":"2022-11-04T09:56:54","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=77273"},"modified":"2023-09-18T17:54:03","modified_gmt":"2023-09-19T00:54:03","slug":"p2000-code-nox-adsorber-efficiency-below-threshold-bank-1","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2000-code-nox-adsorber-efficiency-below-threshold-bank-1\/","title":{"rendered":"P2000 Code: NOx Adsorber Efficiency Below Threshold Bank 1"},"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-column_a53db4-68 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_a53db4-68 > .kt-inside-inner-col,.kadence-column_a53db4-68 > .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-column_a53db4-68 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_a53db4-68 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_a53db4-68 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_a53db4-68 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_a53db4-68{position:relative;}@media all and (max-width: 1024px){.kadence-column_a53db4-68 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_a53db4-68 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_a53db4-68 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-66140e  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-24714a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_5061f1-9e, .wp-block-kadence-advancedheading.kt-adv-heading_5061f1-9e[data-kb-block=\"kb-adv-heading_5061f1-9e\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_5061f1-9e mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_5061f1-9e[data-kb-block=\"kb-adv-heading_5061f1-9e\"] 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-heading_5061f1-9e img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_5061f1-9e[data-kb-block=\"kb-adv-heading_5061f1-9e\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_5061f1-9e summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_5061f1-9e\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>NOx sensors monitor nitrogen oxide levels in exhaust gases before and after going through the NOx trap. Code P2000 is set once the efficiency of the bank 1 adsorber falls below design parameters.<\/li><li>Some of the common causes of a P2000 code include a bad oxygen sensor, a faulty NOx sensor, and an overloaded NOx adsorber catalyst.<\/li><li>Your check engine light will illuminate once this code is logged.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The engine aftertreatment system plays a vital role in the emission control system of many diesel vehicles. It keeps track of the amount of oxygen in the exhaust gases produced by the engine as a byproduct of burning fuel to produce power. The readings go to the powertrain control module (PCM), which tweaks the fuel mixture entering the intake air to correct the engine running lean or rich.<\/p>\n\n\n\n<p>If the PCM notices that the <a href=\"https:\/\/www.carparts.com\/nitrogen-oxide-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"nitrogen oxide (NOx) adsorber\">nitrogen oxide (NOx) adsorber<\/a> isn&rsquo;t performing as well as it should, it will set a P2000 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2000 Code Mean?<\/h2>\n\n\n\n<p>The diagnostic trouble code (DTC) P2000 indicates &ldquo;NOx Adsorber Efficiency Below Threshold Bank 1.&rdquo;<\/p>\n\n\n\n<p>Many diesel vehicles have <a href=\"https:\/\/www.carparts.com\/catalytic-converter?&amp;vehicle%5Bmodel%5D=Fusion&amp;vehicle%5Bmake%5D=Ford&amp;vehicle%5Byear%5D=2018\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converters\">catalytic converters<\/a>. However, cat cons are less effective because spent exhaust gases from diesel engines contain more oxygen.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-1024x683.jpg\" alt=\"automotive nitrogen oxide sensor image\" class=\"wp-image-77323\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/automotive-nitrogen-oxide-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>If the PCM notices that the NOx adsorber isn&rsquo;t performing as well as it should, it will set a P2000 code.<\/figcaption><\/figure>\n\n\n\n<p>To help the catalytic converter reduce emission levels, diesel vehicles also have a NOx adsorption system. Also called a NOx trap, it&rsquo;s part of the selective catalytic reduction (SCR) system.<\/p>\n\n\n\n<p>The NOx adsorber is made of a material that attracts and stores nitrogen oxides. When exhaust gases pass through the adsorber, the NOx gets captured.<\/p>\n\n\n\n<p>Like the EVAP canister in gasoline vehicles, the NOx adsorber can only store so much emission. An electronic injection system refreshes the adsorber by spraying it with reductant fluid, usually diesel fuel.<\/p>\n\n\n\n<p>NOx sensors measure the nitrogen oxide level in exhaust gases before and after going through the NOx trap. They send their readings to the PCM.<\/p>\n\n\n\n<p>The PCM will set the generic powertrain code P2000 if the bank 1 adsorber works far less efficiently than designed. We recommend avoiding performing a mobile desoot of the diesel vehicle until this problem is resolved.<\/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 definition of code P2000 can differ according to the vehicle manufacturer. Check 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 Common Causes of the P2000 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><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> or NOx sensor<\/li><li>Bad or overloaded NOx adsorber catalyst<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/symptoms-of-failing-mass-air-flow-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty mass air flow sensor\">Faulty mass air flow sensor<\/a><\/li><li>Exhaust or intake leaks<\/li><li>Circuit issues, such as a damaged <a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wire\">wire<\/a> or poor connection<\/li><li>A PCM issue, such as software in need of an update<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of P2000 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-1024x681.jpg\" alt=\"image of an oxygen sensor\" class=\"wp-image-77328\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/image-of-an-oxygen-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>A faulty oxygen sensor or NOx sensor is one of the common causes of logged P2000 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2000 Code<\/h2>\n\n\n\n<p>P2000 is a generic <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain code\">powertrain code<\/a> that can show up in various makes and models. Various factors can change the root cause and symptoms among cases.<\/p>\n\n\n\n<p>If you don&rsquo;t think you can run diagnostics on the P2000 code, you should bring your vehicle to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2000 Code<\/h2>\n\n\n\n<p>Fixing a P2000 code&rsquo;s underlying issues can become a tough task if you don&rsquo;t have the right tools and know-how to evaluate the NOx adsorber for problems. Generally, it&rsquo;s best to leave the job to professionals whom you trust.<\/p>\n\n\n\n<p>For DIYers with advanced technical knowledge and hands-on experience who prefer to test and replace their vehicle on their own, it&rsquo;s a good idea to consult the vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manual\">repair manual<\/a> or look for an <a href=\"https:\/\/www.carparts.com\/blog\/best-online-resources-to-help-you-learn-how-to-fix-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"online repair database\">online repair database<\/a>.<\/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>The engine aftertreatment system plays a vital role in the emission control system of many diesel vehicles. It keeps track&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2000-code-nox-adsorber-efficiency-below-threshold-bank-1\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":77311,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":[3157],"ppma_author":[2607,2855],"class_list":{"0":"post-77273","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-nitrogen-oxide-sensor","9":"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>P2000 Code: NOx Adsorber Efficiency Below Threshold Bank 1 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Did the P2000 code appear in your scan tool? 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