{"id":72055,"date":"2022-09-02T00:20:53","date_gmt":"2022-09-02T07:20:53","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=72055"},"modified":"2023-09-13T20:47:40","modified_gmt":"2023-09-14T03:47:40","slug":"p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\/","title":{"rendered":"P0872 Code: Transmission Fluid Pressure Sensor \/ Switch &#8220;C&#8221; Circuit Low"},"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_062fa1-10 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_062fa1-10 > .kt-inside-inner-col,.kadence-column_062fa1-10 > .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_062fa1-10 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_062fa1-10 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_062fa1-10 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_062fa1-10 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_062fa1-10{position:relative;}@media all and (max-width: 1024px){.kadence-column_062fa1-10 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_062fa1-10 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_062fa1-10 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-ee94e4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-68d608\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_906fb5-de, .wp-block-kadence-advancedheading.kt-adv-heading_906fb5-de[data-kb-block=\"kb-adv-heading_906fb5-de\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_906fb5-de mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_906fb5-de[data-kb-block=\"kb-adv-heading_906fb5-de\"] 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_906fb5-de img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_906fb5-de[data-kb-block=\"kb-adv-heading_906fb5-de\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_906fb5-de summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_906fb5-de\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The diagnostic trouble code (DTC) P0872 means &ldquo;Transmission Fluid Pressure Sensor \/ Switch &lsquo;C&rsquo; Circuit Low.&rdquo;<\/li><li>The powertrain control module (PCM) will log this code if it detects a lower-than-normal voltage signal from sensor&nbsp; &ldquo;C&rdquo; input.<\/li><li>Common causes of the P0872 code are a faulty transmission fluid pressure sensor, wiring issues, and low transmission fluid levels.<\/li><li>The symptoms of a P0872 code are an illuminated check engine light, greater fuel consumption and wastage, and an improperly shifting transmission.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The transmission fluid pressure (TFP) sensor measures the pressure exerted by the fluid flowing through the transmission. It sends its readings to the <a href=\"https:\/\/www.carparts.com\/transmission-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission control module\">transmission control module<\/a> (TCM), the computer that ensures that the transmission shifts gears smoothly and efficiently.<\/p>\n\n\n\n<p>The TCM will log a P0872 code if it determines that the <a href=\"https:\/\/www.carparts.com\/automatic-transmission-pressure-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission fluid pressure sensor\">transmission fluid pressure sensor<\/a> sent a signal with a lower voltage than expected.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0872 Code Mean?<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble code\">diagnostic trouble code<\/a> (DTC) P0872 indicates &ldquo;Transmission Fluid Pressure Sensor\/Switch &ldquo;C&rdquo; Circuit Low.&rdquo;<\/p>\n\n\n\n<p>Also referred to as the transmission fluid pressure switch, the TFP sensor is usually secured to the side of the valve body. It could also be attached to the side of the <a href=\"https:\/\/www.carparts.com\/transmission-case\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission case\">transmission case<\/a> or body.<\/p>\n\n\n\n<p>The TFP sensor converts the pressure in the transmission into a voltage signal. It sends its readings to the TCM or <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM).<\/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\/08\/white-car-transmission-control-module-1024x602.jpg\" alt=\"transmission control module or TCM\" class=\"wp-image-72056\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/white-car-transmission-control-module.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The transmission control module (TCM) keeps track of the transmission&rsquo;s pressure level.<\/figcaption><\/figure>\n\n\n\n<p>The TCM uses the readings to keep track of what pressure level the transmission is currently running at. It will warn the driver about critical transmission fluid pressure levels.<\/p>\n\n\n\n<p>The PCM regularly checks the signals transmitted by the transmission fluid pressure sensor and compares them to the correct readings stored in its memory. If the voltage signal from sensor&nbsp; &ldquo;C&rdquo; input is lower than it should be, the control module will set the generic code P0872.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P0872 can differ depending on the vehicle manufacturer. Check 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 P0872 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Transmission fluid pressure sensor stops working properly<\/li><li>Wiring issue<\/li><li>Faulty TCM<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/how-much-is-transmission-fluid-plus-answers-to-commonly-asked-questions\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Low fluid level\">Low fluid level<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/transmission-valve-body-what-it-is-how-it-works-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Valve body issues\">Valve body issues<\/a><\/li><li>Internal transmission failure<\/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 P0872 Code?<\/h2>\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>More fuel consumed and wasted<\/li><li>Improperly shifting transmission<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0872 Code<\/h2>\n\n\n\n<p>The P0872 code is a generic powertrain\/engine code that various makes and models can log. However, this does not mean that there is a one-size-fits-all solution to identify its underlying problem.<\/p>\n\n\n\n<p>If you&rsquo;re not confident about conducting diagnostic tests on your vehicle, it&rsquo;s best to bring it to a professional mechanic. Otherwise, you can go ahead and diagnose the issue yourself. To help you get started, here is a video that can give you 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-4-3 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Pressure Sensor &amp; Wiring Diagram\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/_xSyhv6pWT0?start=22&amp;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 P0872 Code<\/h2>\n\n\n\n<p>Attempting to fix the P0872 code can become a challenging task if you don&rsquo;t have the right tools and know-how to test the transmission fluid pressure sensor. There are many powertrain\/engine codes that share the same symptoms as the P0872 code. So it&rsquo;s usually best to leave the job to professionals. But if you have the right technical knowledge and hands-on experience, you can test and replace your transmission pressure sensor on your own. Make sure you refer to a vehicle-specific <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 an online repair database\">repair manual or an online repair database<\/a> before you get started.<\/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>The transmission fluid pressure (TFP) sensor measures the pressure exerted by the fluid flowing through the transmission. It sends its&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":72057,"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":[3167,1323,3009,1222],"ppma_author":[2607,2855],"class_list":{"0":"post-72055","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-automatic-transmission-pressure-sensor","9":"tag-engine-control-module-2","10":"tag-transmission-case","11":"tag-transmission-control-module","12":"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>P0872 Code: Transmission Fluid Pressure Sensor \/ Switch &quot;C&quot; Circuit Low - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what code P0872 means and learn its usual causes and signs. Know what to do if your scanner shows this code. Read on.\" \/>\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\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0872 Code: Transmission Fluid Pressure Sensor \/ Switch &quot;C&quot; Circuit Low - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what code P0872 means and learn its usual causes and signs. Know what to do if your scanner shows this code. Read on.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\/\" \/>\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=\"2022-09-02T07:20:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-14T03:47:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/mechanic-performing-a-car-assessment.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1335\" \/>\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=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0872-code-transmission-fluid-pressure-sensor-switch-c-circuit-low\\\/\"},\"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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