{"id":79256,"date":"2025-06-29T17:12:16","date_gmt":"2025-06-29T22:12:16","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79256"},"modified":"2025-06-29T17:12:16","modified_gmt":"2025-06-29T22:12:16","slug":"p2059-obd2-reductant-injection-air-pump-control-circuit-open","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2059-obd2-reductant-injection-air-pump-control-circuit-open","title":{"rendered":"P2059 OBD2: Reductant Injection Air Pump Control Circuit\/Open"},"content":{"rendered":"<p>The P2059 OBD-II code indicates a problem with the Reductant Injection Air Pump control circuit. This code is crucial to the operation of your vehicle&#8217;s emissions system and should be addressed promptly.<\/p>\n<h2>What Does the P2059 Code Mean?<\/h2>\n<p>When the P2059 code is triggered, it signifies that the Reductant Injection Air Pump is not functioning correctly. This pump plays an essential role in injecting air into the Diesel Exhaust Fluid (DEF) system, which is vital for reducing harmful emissions from your vehicle.<\/p>\n<h2>What Causes the P2059 Code?<\/h2>\n<p>Several issues can lead to the P2059 code being set, including:<\/p>\n<ul>\n<li>Reductant injection air pump failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues related to the air pump circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2059 Code?<\/h2>\n<p>Common symptoms associated with the P2059 code may include:<\/p>\n<ul>\n<li>Check Engine Light illuminated<\/li>\n<li>Reduced engine performance<\/li>\n<li>Increased emissions<\/li>\n<li>Possible failure of emissions tests<\/li>\n<\/ul>\n<h2>How Serious Is the P2059 Code?<\/h2>\n<p>The P2059 code is categorized as urgent. It indicates a significant malfunction that can lead to severe damage to the vehicle&#8217;s emission system, potentially causing harm to the driver and passengers. Immediate attention is recommended.<\/p>\n<h2>How to Diagnose the P2059 Code<\/h2>\n<p>To diagnose the P2059 code, a mechanic should follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P2059 code and check for any additional codes.<\/li>\n<li>Inspect the Reductant Injection Air Pump and its wiring for visible damage or disconnections.<\/li>\n<li>Test the Reductant Injection Air Pump&#8217;s functionality to ensure it operates correctly.<\/li>\n<li>Check the PCM for proper operation and any stored fault codes that could relate to the air pump.<\/li>\n<\/ol>\n<h2>Common Repairs for the P2059 Code<\/h2>\n<p>Common repairs associated with the P2059 code may include:<\/p>\n<ul>\n<li>Replacing the Reductant Injection Air Pump<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Reprogramming or replacing the Powertrain Control Module (PCM)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2059 Code?<\/h2>\n<p>The cost to repair the P2059 code can vary widely based on the underlying issue. Repairing wiring can range from $100 to $300, while replacing the air pump might cost between $300 and $700, depending on labor and parts.<\/p>\n<h2>Can I Fix the P2059 Code Myself?<\/h2>\n<p>While some vehicle owners with mechanical knowledge may attempt to fix the P2059 code themselves, it is recommended to seek professional assistance. Proper diagnosis is essential, as simply replacing parts without understanding the root cause may not resolve the issue.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P2059 OBD-II code indicates a problem with the Reductant Injection Air Pump control circuit. This code is crucial to the operation of your vehicle&#8217;s emissions system and should be addressed promptly. What Does the P2059 Code Mean? When the P2059 code is triggered, it signifies that the Reductant Injection Air Pump is not functioning &hellip;<\/p>\n","protected":false},"author":26,"featured_media":89401,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-79256","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P2059 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2059 code, what causes reductant injection air pump control circuit\/open issues, and how to diagnose and fix common problems to maintain optimal engine performance.\" \/>\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.emanualonline.com\/blog\/p2059-obd2-reductant-injection-air-pump-control-circuit-open\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2059 OBD2: Reductant Injection Air Pump Control Circuit\/Open\" \/>\n<meta property=\"og:description\" content=\"The P2059 OBD-II code indicates a problem with the Reductant Injection Air Pump control circuit. This code is crucial to the operation of your vehicle&#039;s\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2059-obd2-reductant-injection-air-pump-control-circuit-open\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-29T22:12:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JC Landry\" \/>\n<meta name=\"twitter:card\" 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2059-obd2-reductant-injection-air-pump-control-circuitopen-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"The P2059 OBD-II code indicates a problem with the Reductant Injection Air Pump control circuit. This code is crucial to the operation of your vehicle&#8217;s emissions system and should be addressed promptly. What Does the P2059 Code Mean? When the P2059 code is triggered, it signifies that the Reductant Injection Air Pump is not functioning&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=79256"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79256\/revisions"}],"predecessor-version":[{"id":85955,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79256\/revisions\/85955"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/89401"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}