{"id":72765,"date":"2022-09-06T03:01:53","date_gmt":"2022-09-06T10:01:53","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=72765"},"modified":"2023-09-29T19:51:05","modified_gmt":"2023-09-30T02:51:05","slug":"p0704-clutch-switch-input-circuit","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0704-clutch-switch-input-circuit\/","title":{"rendered":"P0704: Clutch Switch Input Circuit"},"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_29a5c4-9b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_29a5c4-9b > .kt-inside-inner-col,.kadence-column_29a5c4-9b > .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_29a5c4-9b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_29a5c4-9b > .kt-inside-inner-col{flex-direction:column;}.kadence-column_29a5c4-9b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_29a5c4-9b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_29a5c4-9b{position:relative;}@media all and (max-width: 1024px){.kadence-column_29a5c4-9b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_29a5c4-9b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_29a5c4-9b qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-f47326  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-a0239f\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_939d25-75, .wp-block-kadence-advancedheading.kt-adv-heading_939d25-75[data-kb-block=\"kb-adv-heading_939d25-75\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_939d25-75 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_939d25-75[data-kb-block=\"kb-adv-heading_939d25-75\"] 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_939d25-75 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_939d25-75[data-kb-block=\"kb-adv-heading_939d25-75\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_939d25-75 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_939d25-75\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P0704 code is defined as &ldquo;Clutch Switch Input Circuit.&rdquo; The powertrain control module (PCM) electronically monitors the clutch pedal position via the clutch switch. The PCM triggers this code when it detects a malfunctioning clutch switch.<\/li><li>The P0704 can be caused by a faulty clutch switch or its wiring, worn clutch pedal bushing, a blown fuse, or a faulty PCM.<\/li><li>When the P0704 code is triggered, the engine might refuse to start and the check engine light will illuminate.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Does your vehicle have problems with its transmission? Plug a scan tool into your vehicle to check if it has any hidden <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"trouble codes\">trouble codes<\/a>. If the P0704 code has been triggered, this article will tell you about the code&rsquo;s definition and common causes and symptoms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0704 Code Mean?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The P0704 code is defined as Clutch Switch Input Circuit. The PCM electronically monitors the clutch pedal position via the clutch switch. When the PCM detects a malfunctioning clutch switch, it will trigger the P0704 code. The clutch switch component is responsible for preventing the engine from starting if the <a href=\"https:\/\/www.carparts.com\/blog\/slipping-clutch-symptoms-replacement-cost-how-to-fix\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"clutch\">clutch<\/a>is engaged. The clutch switch does this by interrupting the signal from the ignition switch to the starter motor.<\/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\/2022\/09\/car-clutch-switch-1024x614.png\" alt=\"car clutch switch\" class=\"wp-image-72821\" width=\"1024\" height=\"614\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-switch-1024x614.png 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-switch-300x180.png 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-switch-768x461.png 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-switch-150x90.png 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-switch.png 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>When the PCM detects a malfunctioning clutch switch, it will trigger the P0704 code.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>Note: <\/strong>The definition of the P0704 code can 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 P0704 Code?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The following problems can trigger the P0704 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Faulty <a href=\"https:\/\/www.carparts.com\/clutch-start-switch\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"clutch switch\">clutch switch<\/a><\/li><li>Worn <a href=\"https:\/\/www.carparts.com\/clutch-pedal-bushing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"clutch pedal&nbsp; bushing\">clutch pedal&nbsp; bushing<\/a><\/li><li>Faulty clutch switch wiring<\/li><li>Blown <a href=\"https:\/\/www.carparts.com\/blog\/car-fuse-facts-what-you-need-to-know-about-automotive-fuses\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuse\">fuse<\/a><\/li><li>Faulty PCM or PCM programming error<\/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 P0704 Code?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The following symptoms can show up in your vehicle when the P0704 code is triggered:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>The <a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine refuses to start\">engine refuses to start<\/a><\/li><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><\/ul>\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\/2022\/09\/car-clutch-pedal-bushing-1024x614.jpg\" alt=\"car clutch pedal bushing\" class=\"wp-image-72824\" width=\"1024\" height=\"614\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-pedal-bushing-1024x614.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-pedal-bushing-300x180.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-pedal-bushing-768x461.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-pedal-bushing-150x90.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-clutch-pedal-bushing.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Worn clutch pedal&nbsp; bushings can result in registered P0704 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0704 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A faulty clutch switch can be one of the causes of the P0704 code. However, you should never assume that your vehicle has this issue and simply replace the clutch switch without a proper diagnosis. You might need special tools or knowledge in order to access and test the concerned parts in order to properly diagnose the issue.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you don&rsquo;t think you&rsquo;re up to the task, then you shouldn&rsquo;t hesitate to call a professional mechanic.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to diagnose the problem yourself? Watch the video below to get an idea of what the process might 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=\"P0704 Audi A4 B7 Clutch Switch 001796 Ross Tech\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/MpHPj0zPkwE?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 P0704 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The code&rsquo;s definition may signify that the problem is caused by a faulty clutch switch, worn clutch pedal lever, or the other causes listed above. But don&rsquo;t immediately replace the concerned parts without verifying that they&rsquo;re causing the problem. Failure to follow the correct inspection procedure might result in unnecessary part replacement. Always keep in mind that there isn&rsquo;t a magic bullet when it comes to fixing diagnostic trouble codes (DTC).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">After you&rsquo;ve identified the culprit, consult trusted internet repair resources and how-to guides. You can also <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check your vehicle&rsquo;s repair manual\">check your vehicle&rsquo;s repair manual<\/a> or <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=\"internet repair databases\">internet repair databases<\/a> because they might have important information regarding your vehicle&rsquo;s issue.<\/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>Does your vehicle have problems with its transmission? Plug a scan tool into your vehicle to check if it has&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0704-clutch-switch-input-circuit\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":72820,"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":[3541],"ppma_author":[2607,2855],"class_list":["post-72765","post","type-post","status-publish","format-standard","has-post-thumbnail","category-obd-ii-trouble-codes","tag-clutch-start-switch","entry"],"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0704: Clutch Switch Input Circuit - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"This article tackles the P0704 code\u2019s definition and common causes and symptoms. Read on for more information.\" \/>\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\/p0704-clutch-switch-input-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0704: Clutch Switch Input Circuit - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"This article tackles the P0704 code\u2019s definition and common causes and symptoms. 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