{"id":45448,"date":"2022-09-16T04:12:00","date_gmt":"2022-09-16T11:12:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=45448"},"modified":"2024-06-15T01:37:31","modified_gmt":"2024-06-15T08:37:31","slug":"p2647-code-a-rocker-arm-actuator-system-stuck-on","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2647-code-a-rocker-arm-actuator-system-stuck-on\/","title":{"rendered":"P2647 Code: &#8220;A&#8221; Rocker Arm Actuator System Stuck On"},"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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_81c2ab-3c > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_81c2ab-3c > .kt-inside-inner-col,.kadence-column_81c2ab-3c > .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-column_81c2ab-3c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_81c2ab-3c > .kt-inside-inner-col{flex-direction:column;}.kadence-column_81c2ab-3c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_81c2ab-3c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_81c2ab-3c{position:relative;}@media all and (max-width: 1024px){.kadence-column_81c2ab-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_81c2ab-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_81c2ab-3c qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-d7bfdb  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-3c9512\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_f7e92a-a7, .wp-block-kadence-advancedheading.kt-adv-heading_f7e92a-a7[data-kb-block=\"kb-adv-heading_f7e92a-a7\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_f7e92a-a7 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_f7e92a-a7[data-kb-block=\"kb-adv-heading_f7e92a-a7\"] 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-heading_f7e92a-a7 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_f7e92a-a7[data-kb-block=\"kb-adv-heading_f7e92a-a7\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_f7e92a-a7 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_f7e92a-a7\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Diagnostic trouble code (DTC) P2647 stands for &ldquo;&lsquo;A&rsquo; Rocker Arm Actuator System Stuck On.&rdquo;<\/li><li>Engines with VTEC utilize a rocker arm actuator system to vary valve lift using two camshaft profiles (high and low RPM).<\/li><li>The P2647 code can be triggered if the PCM detects a discrepancy between the actual state of the oil pressure switch and its expected condition during VTEC activation.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>There are many <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble codes (DTCs)\">diagnostic trouble codes (DTCs)<\/a>, one of which is P2647. If you use a scan tool on your vehicle and a P2647 code pops up, here&rsquo;s what may be happening:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Code P2647 and What Does It Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P2647 represents &ldquo;&lsquo;A&rsquo; Rocker Arm Actuator System Stuck On.&rdquo; The code is often found on <a href=\"https:\/\/www.carparts.com\/honda\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Honda\">Honda<\/a> and <a href=\"https:\/\/www.carparts.com\/acura\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Acura\">Acura<\/a> vehicles equipped with Variable Valve Timing &amp; Lift Electronic Control (VTEC).&nbsp;<\/p>\n\n\n\n<p>Engines with VTEC use a rocker arm actuator system to vary engine <a href=\"https:\/\/www.carparts.com\/valve-lifter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"valve lift\">valve lift<\/a>. A typical system has two <a href=\"https:\/\/www.carparts.com\/camshaft\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"camshaft\">camshaft<\/a> profiles: one for high <a href=\"https:\/\/www.carparts.com\/blog\/what-does-car-rpm-stand-for\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"RPM\">RPM<\/a> and one for low RPM. When the engine reaches a predetermined speed, the powertrain control module (PCM) operates a solenoid valve that allows oil pressure to activate a pin assembly that locks the <a href=\"https:\/\/www.carparts.com\/rocker-arm\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"rocker arms\">rocker arms<\/a> together, forcing them to follow the high RPM camshaft profile. The PCM monitors an oil pressure switch to verify that the change took place.&nbsp; The P2647 code may show up if the actual state of the oil pressure switch is not what the PCM expects.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-1024x683.jpg\" alt=\"automotive rocker arm\" class=\"wp-image-45483\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/automotive-rocker-arm.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Engines with VTEC use a rocker arm actuator system to vary engine valve lift.<\/figcaption><\/figure>\n\n\n\n<p>You can get more information that can help you understand codes like P2647 more fully in our technical discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p2646-code-a-rocker-arm-actuator-system-performancestuck-off-bank-1\/#Variable_Valve_Lift_in_VTEC_and_Other_Systems\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"VTEC\">VTEC<\/a>.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P2647 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\">&nbsp;What are the Possible Causes of the P2647 Code?<\/h2>\n\n\n\n<p>Many issues can cause the P2647 code to trigger. Here are&nbsp; some of the most common ones:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Faulty VTEC oil pressure switch&nbsp;<\/li><li>Bad VTEC solenoid&nbsp;<\/li><li>Obstructed oil screen&nbsp;<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/low-oil-pressure-symptoms-and-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Low oil pressure\">Low oil pressure<\/a>&nbsp;<\/li><li>Clogged oil passages&nbsp;<\/li><li>Wiring problems, such as damaged wires and poor connections&nbsp;<\/li><li>Low engine oil level<\/li><\/ul>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2647 Code?<\/h2>\n\n\n\n<p>Different engine problems may be signs of a P2647 code. Here are the code&rsquo;s most most common symptoms:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><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><li><a href=\"https:\/\/www.carparts.com\/blog\/what-triggers-reduced-engine-power\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Reduced engine performance\">Reduced engine performance<\/a><\/li><li>Decreased fuel efficiency<\/li><li>Vehicle runs rough<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2647 Code<\/h2>\n\n\n\n<p>Using a scan tool to detect the P2647 code may be straightforward enough to do by yourself, but further diagnosis can be very technical. It&rsquo;s best to get a professional to inspect your vehicle for accurate diagnosis. However, If you&rsquo;d like to take a shot at it, you can check out these videos to learn what the&nbsp; troubleshooting process can involve:<\/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=\"VTEC Repair  P2647 Or 2646 (Pressure Circuit Voltage High Or Low)\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/R81KJe0a3Po?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<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=\"2002-2009 Honda CR-V P2646 P2647 code fix.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/kWCnsiPt7Yc?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 the P2647 Code<\/h2>\n\n\n\n<p>In general, there is no one way to fix the problems signified by OBD-II trouble codes. Many professionals require extensive training and experience in automotive repair to efficiently address the issues that trigger these codes.&nbsp;<\/p>\n\n\n\n<p>However, tech-savvy DIYers may feel confident enough to navigate through OBD code problems on their own. For most trouble codes, the first thing to do is inspect the issues that may be triggering the code. If you&rsquo;re able to find out what&rsquo;s causing the P2647 code, you can determine the next appropriate steps, with the help of 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>.<br>Note that some vehicles may have specific repair procedures, depending on their make and model. What works to resolve a P2647 code issue in a Honda may not work for a <a href=\"https:\/\/www.carparts.com\/subaru\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Subaru\">Subaru<\/a>. Make sure to have repair information&nbsp; on hand before attempting to troubleshoot any OBD codes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get Replacement Parts for Your Vehicle<\/h2>\n\n\n\n<p>If you need to replace the VTEC <a href=\"https:\/\/www.carparts.com\/oil-pressure-switch\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oil pressure switch\">oil pressure switch<\/a> or any of the parts mentioned above, don&rsquo;t put off shopping for the component you need. Otherwise, the faulty part could cause issues that can trigger other trouble codes. Thankfully, you can find what you need at <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a> in a matter of minutes.<\/p>\n\n\n\n<p>Our website makes it easy for car owners like you to find the right parts for your ride. Fill out the vehicle selector to view the products that fit your ride. Then, use the search filters to narrow down the results according to your preferred brand, price range, quantity, etc.<\/p>\n\n\n\n<p>Once you&rsquo;ve placed your order, you can expect it at your doorstep in as fast as two business days. This is because all our products are on hand, and we ship from warehouses that are strategically located across the country.<\/p>\n\n\n\n<p>Check out our catalog. Order the part you need to clear code P2647 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>There are many diagnostic trouble codes (DTCs), one of which is P2647. If you use a scan tool on your&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2647-code-a-rocker-arm-actuator-system-stuck-on\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":45482,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":[411,1839,1608,1953],"ppma_author":[2607,2985],"class_list":{"0":"post-45448","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-camshaft","9":"tag-oil-pressure-switch","10":"tag-rocker-arm","11":"tag-valve-lifter","12":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2647 Code: &quot;A&quot; Rocker Arm Actuator System Stuck On - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Is your vehicle registering the code P2647? Here is some information you need to know about this diagnostic trouble code.\" \/>\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\/p2647-code-a-rocker-arm-actuator-system-stuck-on\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2647 Code: &quot;A&quot; Rocker Arm Actuator System Stuck On - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Is your vehicle registering the code P2647? Here is some information you need to know about this diagnostic trouble code.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2647-code-a-rocker-arm-actuator-system-stuck-on\/\" \/>\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=\"2022-09-16T11:12:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-06-15T08:37:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/10\/rocker-arm-of-a-car.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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2647-code-a-rocker-arm-actuator-system-stuck-on\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2647-code-a-rocker-arm-actuator-system-stuck-on\\\/\"},\"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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