{"id":40670,"date":"2022-05-19T11:06:19","date_gmt":"2022-05-19T11:06:19","guid":{"rendered":" https:\/\/dev.way.com\/blog\/?p=40670"},"modified":"2022-05-23T11:39:48","modified_gmt":"2022-05-23T11:39:48","slug":"how-to-fix-a-p1456-engine-code","status":"publish","type":"post","link":"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/","title":{"rendered":"How to Fix a P1456 Engine Code: Causes, Symptoms, and More"},"content":{"rendered":"<p style=\"text-align: center;\"><em>If you see your &#8216;Check Engine&#8217; on and can smell fuel vapors coming from your car, you could have a P1456 engine trouble code. Here&#8217;s how to fix it! <\/em><\/p>\n<p style=\"text-align: justify;\">Any engine trouble code that starts with P1XXX is a manufacturer-specific code &#8211; it can mean different things for different models. The P1456 engine code is specific to Honda, Nissan, and a few other vehicle models. <strong>It indicates a fuel vapor leak or problem with purging it from the engine.<\/strong> Here&#8217;s a quick explainer with everything you need to know about it.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #e71346;color:#e71346\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #e71346;color:#e71346\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#What_does_the_P1456_trouble_code_mean\" >What does the P1456 trouble code mean?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#What_are_the_symptoms_of_a_P1456_code\" >What are the symptoms of a P1456 code?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#What_causes_a_P1456_code\" >What causes a P1456 code?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#Is_it_safe_to_drive_with_a_P1456_code\" >Is it safe to drive with a P1456 code?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#How_to_diagnose_a_P1456_trouble_code\" >How to diagnose a P1456 trouble code<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#How_can_you_fix_a_P1456_error_code\" >How can you fix a P1456 error code?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/#How_much_will_it_cost_to_fix_a_P1456_code\" >How much will it cost to fix a P1456 code?<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_does_the_P1456_trouble_code_mean\"><\/span>What does the P1456 trouble code mean?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><strong>The P1456 code indicates a problem with the EVAP Control System (Evaporative Emission Control System)<\/strong>. The EVAP is responsible for collecting and temporarily storing fuel vapors from the fuel tank to stop them from escaping into the atmosphere. The collected vapors are re-injected into the engine via the intake manifold, where they can be burned.<\/p>\n<p>Whenever there is a fuel leak due to improper closing of the fuel cap or a malfunction in the purging system, a P1456 code will be recorded.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_are_the_symptoms_of_a_P1456_code\"><\/span>What are the symptoms of a P1456 code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul class=\"\">\n<li dir=\"ltr\" style=\"text-align: justify;\">Your &#8216;Check Engine&#8217; light will be illuminated<\/li>\n<li dir=\"ltr\" style=\"text-align: justify;\">You may smell fuel vapors due to the leak<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"What_causes_a_P1456_code\"><\/span>What causes a P1456 code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">While the broad problem that causes a P1456 code is a leak in the Evaporative Emissions Systems, you could further pinpoint the cause of the leak as one of the following:<\/p>\n<ul>\n<li style=\"text-align: justify;\">The fuel cap may be missing\/ loosely screwed on<\/li>\n<li style=\"text-align: justify;\">You may have fit the wrong fuel filler cap<\/li>\n<li style=\"text-align: justify;\">The fuel tank or filler neck might be damaged<\/li>\n<li style=\"text-align: justify;\">There might be something obstructing the fuel cap from being closed<\/li>\n<li style=\"text-align: justify;\">The fuel tank pressure sensor might be damaged<\/li>\n<li style=\"text-align: justify;\">There might be leaks in the tubes\/hoses used in the EVAP system<\/li>\n<li style=\"text-align: justify;\">Damages in the carbon canister<\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.way.com\/way-plus\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/blog.way.com\/wp-content\/uploads\/2021\/08\/1148169_BlogAdBanner_Opt7_970x90px_V01_080921.jpg\" alt=\"How to fix a P1456 code\" width=\"970\" height=\"90\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Is_it_safe_to_drive_with_a_P1456_code\"><\/span>Is it safe to drive with a P1456 code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\"><strong>Yes, having a P1456 code will not affect the drivability or functionality of the car.<\/strong> You can continue driving the car in the short term until you get an opportunity to check the EVAP system and diagnose the problem.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_to_diagnose_a_P1456_trouble_code\"><\/span>How to diagnose a P1456 trouble code<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">To diagnose the P1456 error code, you need a good OBD-II (on-board diagnostics) scanning tool.<\/p>\n<p style=\"text-align: justify;\">Allow the vehicle to cool down for around four hours before performing the leak test. This is to ensure that the engine is cool enough and acts as a baseline for testing the leak. It&#8217;s also best to fill the fuel tank between 15%-85% of its capacity.<\/p>\n<ul style=\"text-align: justify;\">\n<li>To diagnose the trouble code, you should let the car <strong>complete at least one drive cycle. <\/strong>One drive cycle is the point from when the engine is stone cold until it reaches operating temperature.<\/li>\n<li>The vehicle&#8217;s Powertrain Control Module (PCM) will act to prevent any outside air from entering the EVAP system by closing the vent valves and activating the purge valves.<\/li>\n<li>The engine will pull a vacuum on the fuel tank while the PCM monitors it via the fuel tank pressure sensor.<\/li>\n<li>If there is a drop in vacuum during the test, the computer will sense that there is a fuel vapor leak. If the EVAP system cannot maintain the vacuum for two consecutive tests, it will lead to a P1456 error code which illuminates the &#8216;Check Engine&#8217; light.<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">You can confirm the presence of the code by plugging your OBD-II scanner into the car&#8217;s DLC port and reading the error code.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-40677 size-large\" src=\"https:\/\/blog.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-1024x683.jpg\" alt=\"How to fix a P1456 code\" width=\"640\" height=\"427\" srcset=\"http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-1024x683.jpg 1024w, http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-300x200.jpg 300w, http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-768x512.jpg 768w, http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-1536x1024.jpg 1536w, http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L-600x400.jpg 600w, http:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_68173373_L.jpg 1999w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_can_you_fix_a_P1456_error_code\"><\/span>How can you fix a P1456 error code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li>Conduct a visual and physical inspection of the fuel tank and cap to ensure it is properly in place<\/li>\n<li>Ensure there are no obstructions on the filler neck<\/li>\n<li>Clean the cap of any foreign matter or debris<\/li>\n<li>Replace the fuel cap if you have misplaced it with another type<\/li>\n<li>Ensure there are no leakages, perforation, or holes in the EVAP system tubes.<\/li>\n<\/ul>\n<p>Manually clear the code and let the vehicle perform at least two drive cycles. Ideally, the &#8216;Check Engine&#8217; light should turn off after successfully passing them.<\/p>\n<p>If the problem persists, there might be further issues with your EVAP system. It might need the attention of a trained technician.<\/p>\n<p><strong>Also read:\u00a0<a href=\" https:\/\/dev.way.com\/blog\/engine-codes\/\" target=\"_blank\" rel=\"noopener\">Find Out How to Fix Common Engine Error Codes<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"How_much_will_it_cost_to_fix_a_P1456_code\"><\/span>How much will it cost to fix a P1456 code?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Provided the problem is minor and does not involve replacing any major components of your EVAP system, it will cost you less than $100 to fix a P1456 code. However, if you need to replace your vehicle&#8217;s EVAP system or canisters, you may have to shell out up to $600.<\/p>\n<p><a href=\"https:\/\/www.way.com\/way-plus\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/blog.way.com\/wp-content\/uploads\/2021\/08\/1148169_BlogAdBanner_Opt8_500x500px_V01_080921.jpg\" alt=\"How to fix a P1456 code\" width=\"500\" height=\"500\" \/><\/a><\/p>\n<hr \/>\n<p style=\"text-align: center;\"><em>Here&#8217;s more info on <a tabindex=\"-1\" title=\"https:\/\/www.way.com\/airport-parking\" href=\"https:\/\/www.way.com\/airport-parking\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Link top-rated airport parking\">top-rated airport parking<\/a>,\u00a0<a tabindex=\"-1\" title=\"https:\/\/www.way.com\/cities\" href=\"https:\/\/www.way.com\/cities\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Link the best parking spots in your city\">the best parking spots in your city<\/a>, affordable\u00a0<a tabindex=\"-1\" title=\"https:\/\/www.way.com\/auto-insurance\" href=\"https:\/\/www.way.com\/auto-insurance\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Link auto insurance\">auto insurance<\/a>, easy\u00a0<a tabindex=\"-1\" title=\"https:\/\/www.way.com\/auto-refinance\" href=\"https:\/\/www.way.com\/auto-refinance\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Link auto refinance\">auto refinance<\/a>,\u00a0and\u00a0<a tabindex=\"-1\" title=\"https:\/\/www.way.com\/car-wash-near-me\" href=\"https:\/\/www.way.com\/car-wash-near-me\" target=\"_blank\" rel=\"noopener noreferrer\" aria-label=\"Link high-quality car washes near you\">high-quality car washes near you<\/a>.\u00a0<\/em><\/p>\n<hr \/>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you see your &#8216;Check Engine&#8217; on and can smell fuel vapors coming from your car, you could have a P1456 engine trouble code. Here&#8217;s how to fix it! Any engine trouble code that starts with P1XXX is a manufacturer-specific code &#8211; it can mean different things for different models. The P1456 engine code is&hellip; <a class=\"more-link\" href=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/\">Continue reading <span class=\"screen-reader-text\">How to Fix a P1456 Engine Code: Causes, Symptoms, and More<\/span><\/a><\/p>\n","protected":false},"author":46,"featured_media":40678,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,5676],"tags":[],"class_list":["post-40670","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cars-explained","category-engine-codes","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.3 (Yoast SEO v28.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>P1456 Engine Code: Causes, Symptoms, and How to Fix<\/title>\n<meta name=\"description\" content=\"If you see your &#039;Check Engine&#039; on and can smell fuel vapors coming from your car,you could have a P1456 engine trouble code. Here&#039;s how to fix it!\" \/>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Fix a P1456 Engine Code: Causes, Symptoms, and More\" \/>\n<meta property=\"og:description\" content=\"If you see your &#039;Check Engine&#039; on and can smell fuel vapors coming from your car,you could have a P1456 engine trouble code. Here&#039;s how to fix it!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/dev.way.com\/journal\/how-to-fix-a-p1456-engine-code\/\" \/>\n<meta property=\"og:site_name\" content=\"Way Blog\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-19T11:06:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-23T11:39:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/wordwblog02.way.com\/wp-content\/uploads\/2022\/05\/Depositphotos_446059790_L-1024x681.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"681\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mahesh SL\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mahesh SL\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/\"},\"author\":{\"name\":\"Mahesh SL\",\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/#\\\/schema\\\/person\\\/c916386c61281bccf925ffea1c3d35d9\"},\"headline\":\"How to Fix a P1456 Engine Code: Causes, Symptoms, and More\",\"datePublished\":\"2022-05-19T11:06:19+00:00\",\"dateModified\":\"2022-05-23T11:39:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/\"},\"wordCount\":800,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/wordwblog02.way.com\\\/wp-content\\\/uploads\\\/2022\\\/05\\\/Depositphotos_446059790_L.jpg\",\"articleSection\":[\"Cars Explained\",\"Engine Codes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/\",\"url\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/\",\"name\":\"P1456 Engine Code: Causes, Symptoms, and How to Fix\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/dev.way.com\\\/journal\\\/how-to-fix-a-p1456-engine-code\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/wordwblog02.way.com\\\/wp-content\\\/uploads\\\/2022\\\/05\\\/Depositphotos_446059790_L.jpg\",\"datePublished\":\"2022-05-19T11:06:19+00:00\",\"dateModified\":\"2022-05-23T11:39:48+00:00\",\"description\":\"If you see your 'Check Engine' on and can smell fuel vapors coming from your car,you could have a P1456 engine trouble code. 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