{"id":77744,"date":"2025-08-29T10:52:38","date_gmt":"2025-08-29T15:52:38","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77744"},"modified":"2025-08-29T10:52:38","modified_gmt":"2025-08-29T15:52:38","slug":"p0479-obd2-exhaust-pressure-control-valve-a-intermittent","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent","title":{"rendered":"P0479 OBD2: Exhaust Pressure Control Valve &#8220;A&#8221; Intermittent"},"content":{"rendered":"<p>OBD-II code P0479 indicates an issue with the Exhaust Pressure Control Valve &#8220;A&#8221; in your vehicle. This error code is flagged when the engine control module (PCM) detects an intermittent issue with the signal from the exhaust pressure control valve.<\/p>\n<h2>What Does the P0479 Code Mean?<\/h2>\n<p>The P0479 code signifies a problem related to the exhaust pressure control system. It specifically points to an intermittent failure of the exhaust pressure control valve, which is critical for managing exhaust back pressure during engine warm-up.<\/p>\n<h2>What Causes the P0479 Code?<\/h2>\n<p>The P0479 code can be triggered by several factors, including:<\/p>\n<ul>\n<li>Exhaust pressure control valve failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues that may disrupt signal transmission<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0479 Code?<\/h2>\n<p>Common symptoms associated with the P0479 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>Poor fuel economy<\/li>\n<\/ul>\n<h2>How Serious Is the P0479 Code?<\/h2>\n<p>The severity of the P0479 code is moderate. While it may not pose an immediate threat to vehicle safety or functionality, it is advisable to have the problem diagnosed and resolved promptly to prevent further complications.<\/p>\n<h2>How to Diagnose the P0479 Code<\/h2>\n<p>Diagnosing the P0479 code typically involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the code.<\/li>\n<li>Inspect the exhaust pressure control valve and its wiring for any visible signs of damage or failure.<\/li>\n<li>Test the functionality of the exhaust pressure control valve.<\/li>\n<li>Check the PCM for any faults that may be contributing to the issue.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0479 Code<\/h2>\n<p>Repairs for the P0479 code may include:<\/p>\n<ul>\n<li>Replacing the exhaust pressure control valve<\/li>\n<li>Repairing or replacing damaged wiring<\/li>\n<li>Replacing the Powertrain Control Module (PCM) if found faulty<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0479 Code?<\/h2>\n<p>The cost to repair the P0479 code can vary widely depending on the specific issue and labor rates in your area. On average, repairs can range from $100 to $500, but more extensive repairs involving the PCM may cost more.<\/p>\n<h2>Can I Fix the P0479 Code Myself?<\/h2>\n<p>If you have experience working with automotive systems and access to the necessary tools, you may be able to diagnose and repair the issue yourself. However, for most drivers, it&#8217;s advisable to consult with a certified mechanic to ensure the problem is correctly identified and resolved.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>OBD-II code P0479 indicates an issue with the Exhaust Pressure Control Valve &#8220;A&#8221; in your vehicle. This error code is flagged when the engine control module (PCM) detects an intermittent issue with the signal from the exhaust pressure control valve. What Does the P0479 Code Mean? The P0479 code signifies a problem related to the &hellip;<\/p>\n","protected":false},"author":26,"featured_media":94453,"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-77744","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 P0479 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0479 code, what causes issues with the exhaust pressure control valve, 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\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0479 OBD2: Exhaust Pressure Control Valve &quot;A&quot; Intermittent\" \/>\n<meta property=\"og:description\" content=\"OBD-II code P0479 indicates an issue with the Exhaust Pressure Control Valve &quot;A&quot; in your vehicle. This error code is flagged when the engine control\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\" \/>\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=\"2025-08-29T15:52:38+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.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\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0479 OBD2: Exhaust Pressure Control Valve &#8220;A&#8221; Intermittent\",\"datePublished\":\"2025-08-29T15:52:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\"},\"wordCount\":394,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png\",\"articleSection\":[\"P Codes - OBD2 Powertrain Codes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\",\"name\":\"OBD2 Code P0479 \u2013 Causes, Symptoms, and Repairs\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png\",\"datePublished\":\"2025-08-29T15:52:38+00:00\",\"description\":\"Learn all about the P0479 code, what causes issues with the exhaust pressure control valve, and how to diagnose and fix common problems to maintain optimal engine performance.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png\",\"contentUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png\",\"width\":1200,\"height\":675,\"caption\":\"P0479 OBD2: Exhaust Pressure Control Valve \\\"A\\\" Intermittent\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P0479 OBD2: Exhaust Pressure Control Valve &#8220;A&#8221; Intermittent\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\",\"name\":\"eManualOnline Blog\",\"description\":\"Free Tips on Car Service, Repair and General Stuff\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\",\"name\":\"eManualOnline\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/cdm.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/04\\\/LOGO-NEW.png\",\"contentUrl\":\"https:\\\/\\\/cdm.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/04\\\/LOGO-NEW.png\",\"width\":512,\"height\":82,\"caption\":\"eManualOnline\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/EmanualOnline\\\/\",\"https:\\\/\\\/x.com\\\/eManualOnline\",\"https:\\\/\\\/www.instagram.com\\\/emanual.online\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/emanualonline\",\"https:\\\/\\\/www.pinterest.com\\\/emanualonline\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\",\"name\":\"JC Landry\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"contentUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"caption\":\"JC Landry\"},\"description\":\"JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of\u00a0TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. 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\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"OBD2 Code P0479 \u2013 Causes, Symptoms, and Repairs","description":"Learn all about the P0479 code, what causes issues with the exhaust pressure control valve, and how to diagnose and fix common problems to maintain optimal engine performance.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent","og_locale":"en_US","og_type":"article","og_title":"P0479 OBD2: Exhaust Pressure Control Valve \"A\" Intermittent","og_description":"OBD-II code P0479 indicates an issue with the Exhaust Pressure Control Valve \"A\" in your vehicle. This error code is flagged when the engine control","og_url":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent","og_site_name":"eManualOnline Blog","article_publisher":"https:\/\/www.facebook.com\/EmanualOnline\/","article_author":"https:\/\/www.facebook.com\/jee514","article_published_time":"2025-08-29T15:52:38+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png","type":"image\/png"}],"author":"JC Landry","twitter_card":"summary_large_image","twitter_creator":"@eManualOnline","twitter_site":"@eManualOnline","twitter_misc":{"Written by":"JC Landry","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#article","isPartOf":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent"},"author":{"name":"JC Landry","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403"},"headline":"P0479 OBD2: Exhaust Pressure Control Valve &#8220;A&#8221; Intermittent","datePublished":"2025-08-29T15:52:38+00:00","mainEntityOfPage":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent"},"wordCount":394,"commentCount":0,"publisher":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage"},"thumbnailUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png","articleSection":["P Codes - OBD2 Powertrain Codes"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#respond"]}],"copyrightYear":"2025","copyrightHolder":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent","url":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent","name":"OBD2 Code P0479 \u2013 Causes, Symptoms, and Repairs","isPartOf":{"@id":"https:\/\/www.emanualonline.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage"},"thumbnailUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png","datePublished":"2025-08-29T15:52:38+00:00","description":"Learn all about the P0479 code, what causes issues with the exhaust pressure control valve, and how to diagnose and fix common problems to maintain optimal engine performance.","breadcrumb":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#primaryimage","url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png","contentUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png","width":1200,"height":675,"caption":"P0479 OBD2: Exhaust Pressure Control Valve \"A\" Intermittent"},{"@type":"BreadcrumbList","@id":"https:\/\/www.emanualonline.com\/blog\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.emanualonline.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P0479 OBD2: Exhaust Pressure Control Valve &#8220;A&#8221; Intermittent"}]},{"@type":"WebSite","@id":"https:\/\/www.emanualonline.com\/blog\/#website","url":"https:\/\/www.emanualonline.com\/blog\/","name":"eManualOnline Blog","description":"Free Tips on Car Service, Repair and General Stuff","publisher":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.emanualonline.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.emanualonline.com\/blog\/#organization","name":"eManualOnline","url":"https:\/\/www.emanualonline.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/cdm.emanualonline.com\/blog\/wp-content\/uploads\/2021\/04\/LOGO-NEW.png","contentUrl":"https:\/\/cdm.emanualonline.com\/blog\/wp-content\/uploads\/2021\/04\/LOGO-NEW.png","width":512,"height":82,"caption":"eManualOnline"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/EmanualOnline\/","https:\/\/x.com\/eManualOnline","https:\/\/www.instagram.com\/emanual.online\/","https:\/\/www.linkedin.com\/company\/emanualonline","https:\/\/www.pinterest.com\/emanualonline\/"]},{"@type":"Person","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403","name":"JC Landry","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","contentUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","caption":"JC Landry"},"description":"JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of\u00a0TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. 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\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0479-obd2-exhaust-pressure-control-valve-a-intermittent-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":"OBD-II code P0479 indicates an issue with the Exhaust Pressure Control Valve &#8220;A&#8221; in your vehicle. This error code is flagged when the engine control module (PCM) detects an intermittent issue with the signal from the exhaust pressure control valve. What Does the P0479 Code Mean? The P0479 code signifies a problem related to the&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77744","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=77744"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77744\/revisions"}],"predecessor-version":[{"id":84443,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77744\/revisions\/84443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/94453"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77744"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77744"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77744"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}