{"id":75830,"date":"2022-10-16T16:07:50","date_gmt":"2022-10-16T23:07:50","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=75830"},"modified":"2023-08-15T00:07:31","modified_gmt":"2023-08-15T07:07:31","slug":"p2459-code-diesel-particulate-filter-regeneration-frequency","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2459-code-diesel-particulate-filter-regeneration-frequency\/","title":{"rendered":"P2459 Code: Diesel Particulate Filter Regeneration Frequency"},"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_c433f3-e1 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_c433f3-e1 > .kt-inside-inner-col,.kadence-column_c433f3-e1 > .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_c433f3-e1 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_c433f3-e1 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_c433f3-e1 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_c433f3-e1 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_c433f3-e1{position:relative;}@media all and (max-width: 1024px){.kadence-column_c433f3-e1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_c433f3-e1 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_c433f3-e1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-3cf5f8  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-57d5be\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_5de89a-86, .wp-block-kadence-advancedheading.kt-adv-heading_5de89a-86[data-kb-block=\"kb-adv-heading_5de89a-86\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_5de89a-86 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_5de89a-86[data-kb-block=\"kb-adv-heading_5de89a-86\"] 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_5de89a-86 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_5de89a-86[data-kb-block=\"kb-adv-heading_5de89a-86\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_5de89a-86 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_5de89a-86\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Diagnostic trouble code (DTC) P2459 stands for &ldquo;Diesel Particulate Filter Regeneration Frequency.&rdquo; This code only applies to diesel-engined vehicles.<\/li><li>The PCM registers the P2459 code when it detects that the exhaust pressure didn&rsquo;t hit the right level or if the passive regeneration process didn&rsquo;t follow the programmed frequency.<\/li><li>The P2459 code can be caused by a bad DPF pressure sensor, a restricted DPF or exhaust system, accumulated soot, circuit problems, or an issue with the PCM.<\/li><li>Common symptoms of the P2459 code include illuminated warning lights, the vehicle being stuck in limp mode, or poor acceleration and engine problems.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/diesel-particulate-filter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diesel particulate filter\">diesel particulate filter<\/a> (DPF) plays a vital role in controlling the emission level of diesel vehicles. It removes 90% of the soot from the exhaust gasses produced by a diesel engine. &nbsp; The <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) will set a P2459 code if the diesel particulate filter fails to complete its regeneration cycle.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2459 Code Mean?<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Diagnostic trouble code\">Diagnostic trouble code<\/a> (DTC) P2459 stands for &ldquo;Diesel Particulate Filter Regeneration Frequency.&rdquo; It applies to diesel-engined vehicles.<\/p>\n\n\n\n<p>There are two types of diesel particulate filter systems: active and passive. An active DPF system takes its input directly from the PCM and runs automatically while driving.<\/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\/10\/car-diesel-particulate-filter-isolated-part-1024x602.jpg\" alt=\"car diesel particulate filter isolated part\" class=\"wp-image-75837\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-isolated-part.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The diesel particulate filter (DPF) plays a vital role in controlling the emission level of diesel vehicles.<\/figcaption><\/figure>\n\n\n\n<p>In contrast, a passive system requires human input. The PCM will turn on a warning light to inform the driver to activate the passive regeneration process. The vehicle must be parked for most of the process, which can last for several hours, depending on the amount of soot collected by the diesel particulate filter.<\/p>\n\n\n\n<p>The PCM regularly checks the diesel particulate filter for the exhaust pressure and regeneration process.<\/p>\n\n\n\n<p>It will set the generic powertrain code P2459 if it detects one of two things: either the exhaust pressure didn&rsquo;t hit the right level or the passive regeneration process didn&rsquo;t follow the programmed frequency.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P2459 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 a Code P2459?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Bad <a href=\"https:\/\/www.carparts.com\/diesel-particulate-filter-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"DPF pressure sensor\">DPF pressure sensor<\/a><\/li><li>Restricted DPF or exhaust system<\/li><li>An engine performance problem leading to excessive soot accumulation<\/li><li>A circuit problem, such as a damaged wire or poor connection<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"An issue with the PCM\">An issue with the PCM<\/a><\/li><\/ul>\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<h2 class=\"wp-block-heading\">What are the Common Symptoms of a Code P2459?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Illuminated warning lights<\/li><li>Vehicle stuck in a derated or &ldquo;limp&rdquo; mode<\/li><li>Poor acceleration and other engine performance problems<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2459 Code<\/h2>\n\n\n\n<p>Since the P2495 code is a generic trouble code, it can show up in various diesel vehicles. There is no universal solution to it as its underlying problem and symptoms can vary per case.<\/p>\n\n\n\n<p>If you&rsquo;re not confident in your ability to determine what&rsquo;s causing this code, you should take your vehicle to an auto repair shop for a proper diagnosis. Otherwise, you can go ahead and check the issue yourself. To help you get started, here is a video that can give you an idea of what the process might involve:<\/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=\"Vauxhall Astra DPF P2458 P2459 Limp Mode FIXED!!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/UHPtDwYzbN8?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 P2459 Code<\/h2>\n\n\n\n<p>It can be hard to resolve a P2459 code without the tools and know-how to test the diesel particulate filter. In most cases, it&rsquo;s best to find a professional to repair or replace the faulty part for you.<\/p>\n\n\n\n<p>Got the advanced technical knowledge and practical experience to personally test and replace the diesel particulate filter? Consult a vehicle-specific <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manual or online repair database\">repair manual or online repair database<\/a> to ensure you&rsquo;re following the right steps to resolve this code.<\/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 diesel particulate filter (DPF) plays a vital role in controlling the emission level of diesel vehicles. It removes 90%&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2459-code-diesel-particulate-filter-regeneration-frequency\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":75838,"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":[2118,3591,1323],"ppma_author":[2607,2855],"class_list":{"0":"post-75830","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-diesel-particulate-filter","9":"tag-diesel-particulate-filter-pressure-sensor","10":"tag-engine-control-module-2","11":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2459 Code: Diesel Particulate Filter Regeneration Frequency - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what a P2459 code means, the issues that could trigger it, and the symptoms associated with it.\" \/>\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\/p2459-code-diesel-particulate-filter-regeneration-frequency\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2459 Code: Diesel Particulate Filter Regeneration Frequency - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what a P2459 code means, the issues that could trigger it, and the symptoms associated with it.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2459-code-diesel-particulate-filter-regeneration-frequency\/\" \/>\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=\"2022-10-16T23:07:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-08-15T07:07:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-diesel-particulate-filter-dpf-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1204\" \/>\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\\\/p2459-code-diesel-particulate-filter-regeneration-frequency\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2459-code-diesel-particulate-filter-regeneration-frequency\\\/\"},\"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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