{"id":64116,"date":"2021-12-15T23:55:05","date_gmt":"2021-12-16T07:55:05","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=64116"},"modified":"2024-08-19T23:54:14","modified_gmt":"2024-08-20T06:54:14","slug":"p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\/","title":{"rendered":"P0447 Code: Evaporative Emission Control System Vent Valve \/ Solenoid Circuit Open"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column64116_1426b0-8f > .kt-inside-inner-col,.kadence-column64116_1426b0-8f > .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-column64116_1426b0-8f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column64116_1426b0-8f > .kt-inside-inner-col{flex-direction:column;}.kadence-column64116_1426b0-8f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column64116_1426b0-8f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column64116_1426b0-8f{position:relative;}@media all and (max-width: 1024px){.kadence-column64116_1426b0-8f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column64116_1426b0-8f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column64116_1426b0-8f inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-215065  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-09e5d0\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading64116_a996cb-56, .wp-block-kadence-advancedheading.kt-adv-heading64116_a996cb-56[data-kb-block=\"kb-adv-heading64116_a996cb-56\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading64116_a996cb-56 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading64116_a996cb-56[data-kb-block=\"kb-adv-heading64116_a996cb-56\"] 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-heading64116_a996cb-56 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading64116_a996cb-56[data-kb-block=\"kb-adv-heading64116_a996cb-56\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading64116_a996cb-56 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading64116_a996cb-56\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P0447 is a generic powertrain code that stands for &ldquo;Evaporative Emission Control System Vent Valve\/Solenoid Circuit Open.&rdquo;<\/li>\n\n\n\n<li>The code is logged once the PCM senses a circuit problem that may cause the EVAP system&rsquo;s vent valve or solenoid to malfunction.<\/li>\n\n\n\n<li>Some of the most common reasons why a P0477 code is logged include a bad EVAP vent valve, a vacuum leak in the EVAP lines, and wiring or circuit problems.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Got a P0447 code on your scanner? Learn about what this code means, its common symptoms and causes, as well as how best to approach a solution in this article.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0447 Code Mean?<\/h2>\n\n\n\n<p>P0447 is a <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"generic powertrain code\">generic powertrain code<\/a> that stands for &ldquo;Evaporative Emission Control System Vent Valve\/Solenoid Circuit Open.&rdquo; It basically means that your PCM has detected a circuit problem. This can cause your EVAP system&rsquo;s vent valve or solenoid to malfunction.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"792\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve-1024x792.jpg\" alt=\"evap valve\" class=\"wp-image-64324\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve-1024x792.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve-300x232.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve-768x594.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve-150x116.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/evap-valve.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A faulty EVAP vent valve can cause the P0447 code to register.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">About the EVAP system, Canister, and Solenoid<\/h3>\n\n\n\n<p>Evaporative systems have been around since California began requiring EVAP systems on cars in 1970. The gas smell from your fuel tank (hydrocarbon vapors from evaporating gasoline) is captured and stored in a special canister filled with fibrous material. A small vapor line runs from the top of the fuel tank to the canister, which retains the hydrocarbon vapors until they are purged by engine vacuum through a special valve.<\/p>\n\n\n\n<p>The canister has an open vent that allows atmosphere to flow through the canister as engine vacuum is applied to the canister&rsquo;s purge port.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"631\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram-1024x631.jpg\" alt=\"evap system diagram\" class=\"wp-image-79965\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram-1024x631.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram-300x185.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram-768x473.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram-150x92.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/evap-system-diagram.jpg 1499w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">EVAP system diagram | Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>With the advent of OBD2, a solenoid was added to the vent port of the canister for the purpose of detecting leaks in the EVAP system. A fuel tank pressure sensor was also added. The ECM\/PCM closes the canister vent solenoid and applies a weak vacuum using the EVAP purge solenoid, then closes the purge solenoid while holding the vent solenoid closed.<\/p>\n\n\n\n<p>The fuel tank pressure sensor is monitored during this EVAP system test, and if the sensor indicates that the fuel tank pressure is rising with both solenoids closed, a code is stored indicating an EVAP leak. Then the vent solenoid is opened and the rise in pressure is measured. If the pressure doesn&rsquo;t rise as quickly as expected, a different code is stored.<\/p>\n\n\n\n<p>The EVAP vent valve solenoid circuit consists of a voltage feed from a relay and a ground trigger from the ECM\/PCM. If the ground trigger isn&rsquo;t applied to the solenoid, the ECM\/PCM expects to &ldquo;see&rdquo; the 12 volts coming through the solenoid back to the ECM\/PCM. If that 12 volts is absent, the ECM\/PCM sets the P0447 code.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0447 may 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 P0447 Code?<\/h2>\n\n\n\n<p>Various EVAP system issues can cause a P0447 code. Here is a list of the most common causes of a code P0447:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Faulty or failing EVAP vent valve<\/li>\n\n\n\n<li>Vacuum leak in the <a href=\"https:\/\/www.carparts.com\/evaporative-emissions-system-lines\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"EVAP lines\">EVAP lines<\/a><\/li>\n\n\n\n<li>Wiring or circuit problems<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner-1024x768.jpg\" alt=\"obd ii scanner\" class=\"wp-image-64325\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner-1024x768.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner-300x225.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner-768x576.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner-150x113.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/obd-ii-scanner.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">OBD-II codes can be too difficult to diagnose at home, so it&rsquo;s best to consult a mechanic if P0447 appears on your scan tool.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0447 Code?<\/h2>\n\n\n\n<p>Here is the most common symptom linked to a P0447 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<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>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0447 Code<\/h2>\n\n\n\n<p>OBD codes, including P0447, can be too difficult to diagnose at home. It&rsquo;s best to consult a mechanic if a P0447 pops up after using a scan tool. If you&rsquo;re feeling curious about this OBD code, you can get a good idea of how to diagnose it by checking <a href=\"https:\/\/www.carparts.com\/blog\/best-online-resources-to-help-you-learn-how-to-fix-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"online sources\">online sources<\/a>. You can watch these videos to learn more about a P0447 code:<\/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=\"how to diagnose and fix code p0447 (nissan titan code p0447 fix) using launch X-431 pros mini obd2\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Z3K3g3a7xTE?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 a P0447 Code&nbsp;<\/h2>\n\n\n\n<p>It takes technical skill and experience to efficiently diagnose and troubleshoot a P0447 code. Mechanics go through extensive training to fix your vehicle&rsquo;s issues that trigger OBD codes. If you want to resolve your ride&rsquo;s problems immediately, ask a mechanic for help.<\/p>\n\n\n\n<p>However, you can try working on trouble codes from home. You need to gather information about the code as well as its causes and underlying problems. If you can determine the P0447 code&rsquo;s exact cause, you can check a <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>. This can help you determine the next appropriate steps.<\/p>\n\n\n\n<p>You must also have your owner&rsquo;s manual in hand. Some fixes may not work for your vehicle&rsquo;s make and mode. What works for a P0447 in a <a href=\"https:\/\/www.carparts.com\/nissan\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Nissan\">Nissan<\/a> may not work for a <a href=\"https:\/\/www.carparts.com\/honda\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Honda\">Honda<\/a>. If troubleshooting OBD codes becomes too technical for you, don&rsquo;t think twice about consulting a mechanic.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get New EVAP System Parts to Clear Trouble Code P0447<\/h2>\n\n\n\n<p>Until you clear a P0447 trouble code from your vehicle, it might be hard to enjoy your road trips and city drives. The good news is that <a href=\"http:\/\/carparts.com\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" aria-label=\"CarParts.com\">CarParts.com<\/a> has everything you need to get your vehicle back on the road and performing like it&rsquo;s new again.<\/p>\n\n\n\n<p>Our website offers an excellent variety of EVAP system parts, from premium <a href=\"https:\/\/www.carparts.com\/evaporative-emissions-system-lines\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"evaporative emissions system lines\">evaporative emissions system lines<\/a> to OE-grade <a href=\"https:\/\/www.carparts.com\/search?q=vapor_canister_vent_valve\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"vapor canister vent valves\">vapor canister vent valves<\/a>. Carefully handpicked by a team of industry professionals, our products are guaranteed to last long.<\/p>\n\n\n\n<p>Online shopping for car parts has never been this easy with CarParts.com. All you have to do is enter your vehicle&rsquo;s year, make, and model into our vehicle selector to start browsing compatible products for your ride.<\/p>\n\n\n\n<p>Never worry about going over budget when you shop from us. All our replacement parts come with a low-price guarantee, helping you get the best value for your money. Order now, and we&rsquo;ll deliver everything you need in as fast as two business days.<\/p>\n\n\n\n<p>Can&rsquo;t shop online? Don&rsquo;t worry! Call us anytime using our toll-free hotline, and our team of customer service professionals will be ready to assist you.<\/p>\n\n\n\n<p>Check out our top-notch EVAP system parts today!<\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Got a P0447 code on your scanner? Learn about what this code means, its common symptoms and causes, as well&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":64323,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_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":[],"ppma_author":[2607,2985],"class_list":{"0":"post-64116","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0447 Code: Evaporative Emission Control System Vent Valve \/ Solenoid Circuit Open - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"The P0447 code indicates a circuit problem in the EVAP system. Read on to learn its symptoms and possible causes.\" \/>\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\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0447 Code: Evaporative Emission Control System Vent Valve \/ Solenoid Circuit Open - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"The P0447 code indicates a circuit problem in the EVAP system. Read on to learn its symptoms and possible causes.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\/\" \/>\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=\"2021-12-16T07:55:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-20T06:54:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/diagnosing-car-trouble-code.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\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=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0447-code-evaporative-emission-control-system-vent-valve-solenoid-circuit-open\\\/\"},\"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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Richard has worked for nearly 50 years in the automotive field as a professional technician, an instructor, a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others (published every year since May 2000). He has developed training courses and written or edited training material for companies in the U.S. Canada, and the Netherlands, and even Bulgaria. He maintained an \u201cask a mechanic\u201d website for 10 years answering questions emailed to him from all over the world.\r\n\r\nRichard has an instructional automotive YouTube channel \u201cMcCuistian\u201d with 13,500 subscribers and over 1,300 videos. Much of his professional work requires photography and videography in shop environments, but Richard also enjoys taking pictures of landscapes, skyscapes, old barns and houses, small towns. He has produced a coffee table book of digital watercolors called \u201cMemories of South Alabama\u201d created from his personal photos, along with a dozen Christian fiction short original novels and a collection of short stories, all available in Kindle or softcover format. 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He has won two International Automotive Media Awards for technical articles published in trade magazines.<\/p><\/li>\r\n<li><p>Has attended hundreds of hours of automotive training from OEMs including GM, Volkswagen, Mazda, Renault, Jeep, Chrysler, as well as additional training at events like KC Vision and MACS (Mobile Air Climate Systems Association).<\/p><\/li>\r\n<li><p>Taught college level auto mechanics for 19 years.<\/p><\/li>\r\n<li><p>Has written for automotive training companies (including course development work for training companies in Canada and the Netherlands) and has been hired to teach professional trade show technician courses at multiple training events in Texas and Alabama.<\/p><\/li>\r\n<li><p>While still teaching at the college level, Richard launched a new automotive program in Geneva, Alabama, setting up a dual enrollment department in a new building, organizing the shop and classroom, teaching morning classes to high school students for 2 years while still teaching at the college in the afternoon.<\/p><\/li>\r\n<li><p>Richard\u2019s college program at Lurleen B. 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