{"id":77195,"date":"2022-11-02T00:16:02","date_gmt":"2022-11-02T07:16:02","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=77195"},"modified":"2023-10-03T19:37:22","modified_gmt":"2023-10-04T02:37:22","slug":"p2259-code-secondary-air-injection-system-control-b-circuit-low","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2259-code-secondary-air-injection-system-control-b-circuit-low\/","title":{"rendered":"P2259 Code: Secondary Air Injection System Control \u201cB\u201d Circuit Low"},"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_252a71-2b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_252a71-2b > .kt-inside-inner-col,.kadence-column_252a71-2b > .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_252a71-2b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_252a71-2b > .kt-inside-inner-col{flex-direction:column;}.kadence-column_252a71-2b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_252a71-2b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_252a71-2b{position:relative;}@media all and (max-width: 1024px){.kadence-column_252a71-2b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_252a71-2b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_252a71-2b qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-003c09  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-155d6a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_3f320e-af, .wp-block-kadence-advancedheading.kt-adv-heading_3f320e-af[data-kb-block=\"kb-adv-heading_3f320e-af\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_3f320e-af mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_3f320e-af[data-kb-block=\"kb-adv-heading_3f320e-af\"] 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_3f320e-af img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_3f320e-af[data-kb-block=\"kb-adv-heading_3f320e-af\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_3f320e-af summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_3f320e-af\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Code P2259 will be logged once the PCM detects that the actual and desired states of the SAI control circuit do not match.<\/li><li>The possible causes of a P2259 code include a disconnected vacuum hose, secondary air pump failure, a faulty SAI valve, and wiring issues.<\/li><li>Your vehicle&rsquo;s secondary air injection system will be disabled once a P2259 code is set.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The secondary air injection (SAI) system pumps fresh air into the exhaust manifold or inside the <a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converter\">catalytic converter<\/a> to assist in the oxidizing process. The system helps reduce highly rich exhaust emissions from escaping into the atmosphere. If the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> detects an issue with the SAI system, a P2257 code will be logged by on-board diagnostics (OBD).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2259 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) P2259 stands for &ldquo;Secondary Air Injection System Control &lsquo;B&rsquo; Circuit Low.&rdquo;<\/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\/sai-pump-directs-airflow-to-the-exhaust-manifolds-1024x681.jpg\" alt=\"sai pump directs airflow to the exhaust manifolds\" class=\"wp-image-77196\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-1536x1022.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/sai-pump-directs-airflow-to-the-exhaust-manifolds.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The SAI system has a belt-driven or electrically driven air pump mounted at the front of the engine.<\/figcaption><\/figure>\n\n\n\n<p>The SAI system has a belt-driven or electrically driven <a href=\"https:\/\/www.carparts.com\/secondary-air-injection-pump\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"air pump\">air pump<\/a> mounted at the front of the engine. During cold engine startup in a typical SAI system, the pump directs airflow to the <a href=\"https:\/\/www.carparts.com\/exhaust-manifold\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"exhaust manifolds\">exhaust manifolds<\/a> where it passes through one-way check valves. This keeps exhaust gases away from the switching solenoids and pump.<\/p>\n\n\n\n<p>Once the engine is warmed up and achieves a closed loop, the air pump will direct airflow to the catalytic converter.<\/p>\n\n\n\n<p>If the PCM detects that the actual and desired states of the SAI control circuit do not match, it may set code P2259 in memory.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P2259 might 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 Common Causes of the P2259 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Clogged or disconnected vacuum hose<\/li><li>Secondary air pump failure<\/li><li>Secondary air pump relay failure<\/li><li>Faulty SAI valve<\/li><li>Wiring issues<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Powertrain control module failure\">Powertrain control module failure<\/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 the P2259 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><li>Disabled secondary air injection system<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2259 Code<\/h2>\n\n\n\n<p>DTC P2259 is a generic powertrain code that can be logged in vehicles with an OBD-II system. While this might be the case, keep in mind that your vehicle&rsquo;s specifications can affect the diagnostic process.<\/p>\n\n\n\n<p>Diagnosing this trouble code might require you to use a scan tool and inspect the affected system for signs of damage. If you&rsquo;re not familiar with how the process works, you can always have a certified mechanic do the job for you. Otherwise, you can go ahead and do it yourself.<\/p>\n\n\n\n<p>To help you out, here&rsquo;s a short clip that shows 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=\"Mazda RX8: A.I.R. Pump Codes\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/BlrYRIU6Zmw?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 P2259 Code<\/h2>\n\n\n\n<p>Without the right tools and technical knowledge, resolving a P2259 code can be tricky and frustrating. It can even lead to complex and expensive repairs if done incorrectly. If you&rsquo;re not confident with your DIY skills yet, it&rsquo;s best to bring your vehicle to the nearest auto repair shop and let the pros handle the job for you.<\/p>\n\n\n\n<p>But if you&rsquo;ve had some experience in dealing with DTCs before, then you already know that there&rsquo;s no magic fix that will work on all makes and models. Having the right manual is critical in ensuring a successful repair job, which is why you might want to look at vehicle-specific guides like those from Chilton or an ALLDATA subscription before you begin.<\/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 secondary air injection (SAI) system pumps fresh air into the exhaust manifold or inside the catalytic converter to assist&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2259-code-secondary-air-injection-system-control-b-circuit-low\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":77197,"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":[1189,1323,1238,2064],"ppma_author":[2607,2855],"class_list":{"0":"post-77195","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-catalytic-converter-2","9":"tag-engine-control-module-2","10":"tag-exhaust-manifold-2","11":"tag-secondary-air-injection-pump","12":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2259 Code: Secondary Air Injection System Control \u201cB\u201d Circuit Low - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Has your vehicle recently logged a P2257 trouble code? Read on to find out what it means as well as the most common causes behind 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\/p2259-code-secondary-air-injection-system-control-b-circuit-low\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2259 Code: Secondary Air Injection System Control \u201cB\u201d Circuit Low - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Has your vehicle recently logged a P2257 trouble code? Read on to find out what it means as well as the most common causes behind it.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2259-code-secondary-air-injection-system-control-b-circuit-low\/\" \/>\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=\"2022-11-02T07:16:02+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-10-04T02:37:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/male-mechanic-encounters-p2259-code.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\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\\\/p2259-code-secondary-air-injection-system-control-b-circuit-low\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2259-code-secondary-air-injection-system-control-b-circuit-low\\\/\"},\"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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