{"id":79633,"date":"2025-06-08T21:10:45","date_gmt":"2025-06-09T02:10:45","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79633"},"modified":"2025-06-08T21:19:24","modified_gmt":"2025-06-09T02:19:24","slug":"p2279-obd2-intake-air-system-leak","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2279-obd2-intake-air-system-leak","title":{"rendered":"P2279 OBD2: Intake Air System Leak"},"content":{"rendered":"<p>The OBD-II code P2279 refers to an Intake Air System Leak. This code is triggered when the engine&#8217;s control module (PCM) detects an unexpected amount of air entering the engine while the throttle plate is closed, typically during idle.<\/p>\n<h2>What Does the P2279 Code Mean?<\/h2>\n<p>OBD-II Code P2279 is defined as an Intake Air System Leak. This indicates that there is a discrepancy in the air intake system that may affect engine performance and efficiency.<\/p>\n<h2>What Causes the P2279 Code?<\/h2>\n<p>The P2279 code can be caused by several factors, including:<\/p>\n<ul>\n<li>Idle Air Control (IAC) valve failure<\/li>\n<li>Leaking intake manifold gasket<\/li>\n<li>Mass Air Flow (MAF) sensor failure<\/li>\n<li>Positive Crankcase Ventilation (PCV) valve failure<\/li>\n<li>Vacuum leaks in the intake system<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2279 Code?<\/h2>\n<p>Common symptoms associated with the P2279 code include:<\/p>\n<ul>\n<li>Decreased engine performance<\/li>\n<li>Increased fuel consumption<\/li>\n<li>Rough idle or stalling<\/li>\n<li>Check Engine Light illuminated<\/li>\n<\/ul>\n<h2>How Serious Is the P2279 Code?<\/h2>\n<p>The severity of the P2279 code is considered <strong>urgent<\/strong>. It indicates significant malfunctions that can not only lead to decreased vehicle performance but may also cause severe damage to the engine if left unaddressed.<\/p>\n<h2>How to Diagnose the P2279 Code<\/h2>\n<p>Diagnosing the P2279 code involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P2279 code and check for any related codes.<\/li>\n<li>Inspect the intake system for any visible signs of leaks or damage.<\/li>\n<li>Test the IAC valve, MAF sensor, and PCV valve for proper operation.<\/li>\n<li>Perform a smoke test to detect hidden vacuum leaks.<\/li>\n<\/ol>\n<h2>Common Repairs for the P2279 Code<\/h2>\n<p>Repairs for the P2279 code may include:<\/p>\n<ul>\n<li>Replacing the intake manifold gasket<\/li>\n<li>Repairing or replacing the IAC valve<\/li>\n<li>Repairing or replacing the MAF sensor<\/li>\n<li>Fixing any vacuum leaks found during diagnosis<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2279 Code?<\/h2>\n<p>The cost to fix the P2279 code can vary widely depending on the cause of the issue and the labor rates in your area. On average, repairs can range from $100 to $500, with more extensive repairs potentially costing more if multiple components need replacement.<\/p>\n<h2>Can I Fix the P2279 Code Myself?<\/h2>\n<p>While some enthusiasts may be able to tackle repairs related to the P2279 code, it is essential to have a good understanding of automotive systems. If you are unsure, it&#8217;s recommended to consult with a professional mechanic to ensure a proper diagnosis and repair.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The OBD-II code P2279 refers to an Intake Air System Leak. This code is triggered when the engine&#8217;s control module (PCM) detects an unexpected amount of air entering the engine while the throttle plate is closed, typically during idle. What Does the P2279 Code Mean? OBD-II Code P2279 is defined as an Intake Air System &hellip;<\/p>\n","protected":false},"author":26,"featured_media":88247,"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-79633","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 P2279 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2279 code, what causes intake air system leak, and how to diagnose and fix common issues 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\/p2279-obd2-intake-air-system-leak\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2279 OBD2: Intake Air System Leak\" \/>\n<meta property=\"og:description\" content=\"The OBD-II code P2279 refers to an Intake Air System Leak. This code is triggered when the engine&#039;s control module (PCM) detects an unexpected amount of\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2279-obd2-intake-air-system-leak\" \/>\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=\"2025-06-09T02:10:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-09T02:19:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2279-obd2-intake-air-system-leak.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\" 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This code is triggered when the engine&#8217;s control module (PCM) detects an unexpected amount of air entering the engine while the throttle plate is closed, typically during idle. What Does the P2279 Code Mean? OBD-II Code P2279 is defined as an Intake Air System&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79633","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=79633"}],"version-history":[{"count":3,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79633\/revisions"}],"predecessor-version":[{"id":88269,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79633\/revisions\/88269"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/88247"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79633"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79633"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79633"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}