{"id":64711,"date":"2022-01-16T22:05:33","date_gmt":"2022-01-17T06:05:33","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=64711"},"modified":"2024-12-19T05:11:33","modified_gmt":"2024-12-19T13:11:33","slug":"p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\/","title":{"rendered":"P0846 Code: Transmission Fluid Pressure Sensor \/ Switch B Circuit Range Performance"},"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-column64711_b882fc-a9 > .kt-inside-inner-col,.kadence-column64711_b882fc-a9 > .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-column64711_b882fc-a9 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column64711_b882fc-a9 > .kt-inside-inner-col{flex-direction:column;}.kadence-column64711_b882fc-a9 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column64711_b882fc-a9 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column64711_b882fc-a9{position:relative;}@media all and (max-width: 1024px){.kadence-column64711_b882fc-a9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column64711_b882fc-a9 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column64711_b882fc-a9 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-b685fe  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-9280f4\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading64711_3e273b-ec, .wp-block-kadence-advancedheading.kt-adv-heading64711_3e273b-ec[data-kb-block=\"kb-adv-heading64711_3e273b-ec\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading64711_3e273b-ec mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading64711_3e273b-ec[data-kb-block=\"kb-adv-heading64711_3e273b-ec\"] 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-heading64711_3e273b-ec img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading64711_3e273b-ec[data-kb-block=\"kb-adv-heading64711_3e273b-ec\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading64711_3e273b-ec summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading64711_3e273b-ec\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Diagnostic trouble code (DTC) P0846 code is defined as &ldquo;transmission fluid pressure sensor\/switch &lsquo;B&rsquo; circuit range performance.&rdquo;<\/li>\n\n\n\n<li>The transmission fluid pressure sensor\/switch (TFPS) monitors the pressure in your ride&rsquo;s transmission. It sends data to the powertrain control module (PCM) or transmission control module (TCM) through a voltage signal.<\/li>\n\n\n\n<li>The P0846 code is triggered when the PCM or TCM detects that the voltage coming from the TFPS doesn&rsquo;t match normal operating voltages stored in its memory.<\/li>\n\n\n\n<li>The P0846 code is typically a TFPS sensor circuit issue. It can also be caused by various mechanical issues like leaks or low fluid pressure.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>If you encounter a P0846 code upon connecting a scan tool to your vehicle, this article can help you learn more about its meaning, symptoms, and causes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0846 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P0846 code is defined as &ldquo;transmission fluid pressure sensor\/switch &lsquo;B&rsquo; circuit range performance.&rdquo; It&rsquo;s a generic, transmission-related trouble code that typically applies to automatic transmission vehicles.<\/p>\n\n\n\n<p>Automatic transmissions have several <a href=\"https:\/\/www.carparts.com\/automatic-transmission-solenoid\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"solenoid\">solenoid<\/a> groups that direct transmission fluid to various hydraulic circuits. The solenoids are grouped into circuits and are labeled A, B, C, and so on. The transfer of these fluids is what allows the transmission to change gears.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"664\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1-1024x664.jpg\" alt=\"transmission control module\" class=\"wp-image-64820\" style=\"width:1024px;height:664px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1-1024x664.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1-300x194.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1-768x498.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1-150x97.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/transmission-control-module-1.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The P0846 code is triggered when the PCM or TCM detects that the voltage coming from the TFPS doesn&rsquo;t match normal operating voltages stored in its memory.<\/figcaption><\/figure>\n\n\n\n<p>The transmission fluid pressure sensor\/switch (TFPS) reads the pressure in the transmission, converts it into an electrical signal, and sends it to the powertrain control module (PCM) or <a href=\"https:\/\/www.carparts.com\/transmission-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"transmission control module (TCM)\">transmission control module (TCM)<\/a>. The PCM or TCM uses this voltage signal to determine transmission operating pressure.<\/p>\n\n\n\n<p>The P0846 code is triggered when the PCM or TCM detects that the voltage coming from the TFPS doesn&rsquo;t match normal operating voltages stored in its memory. The P0846 code is typically a TFPS sensor circuit issue. However, it can also be caused by various mechanical issues like leaks or low fluid pressure.<\/p>\n\n\n\n<p>For more technical information that can help you better grasp how codes like P0846 are set, read our note about the <a href=\"https:\/\/www.carparts.com\/blog\/p0841-code-transmission-fluid-pressure-sensor-switch-a-circuit-range-performance\/#More_About_the_Pressure_Switch_and_Shift_Solenoids\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"pressure switch and shift solenoids\">pressure switch and shift solenoids<\/a>.<\/p>\n\n\n\n<p><em><strong>Note: <\/strong>The definition of the P0846 code 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<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 Possible Causes of the P0846 Code?<\/h2>\n\n\n\n<p>As previously mentioned, the P0846 code is usually triggered by TFPS issues. However, it can also be triggered by other issues such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Failed TFPS sensor<\/li>\n\n\n\n<li>Circuit issues, such as damaged <a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wires\">wires<\/a> or poor connections<\/li>\n\n\n\n<li>Internal mechanical transmission issue<\/li>\n\n\n\n<li>Failed PCM<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-1024x683.jpg\" alt=\"driver holding an automatic transmission gear\" class=\"wp-image-64812\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/automatic-transmission-car.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Your vehicle&rsquo;s shift quality will feel different if it&rsquo;s running with a P0846 code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Symptoms of the P0846 Code?<\/h2>\n\n\n\n<p>Since this is most likely an electrical failure, the PCM or TCM can compensate for the issue to some degree. The PCM or TCM might modify transmission shifting settings if it&rsquo;s electronically controlled. That said, the P0856 code can still cause symptoms such as the following:<\/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\n\n\n<li>Shift quality feels different<\/li>\n\n\n\n<li>Vehicle enables <a href=\"https:\/\/www.carparts.com\/blog\/web-stories\/what-is-limp-mode\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"limp mode\">limp mode<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0846 Code<\/h2>\n\n\n\n<p>After you&rsquo;ve plugged in a scan tool and identified the P0846 code, identifying which part is faulty can be difficult. The transmission is usually difficult to access and requires a lot of time and labor to be able to disassemble them for inspection. To get a proper diagnosis, you may want to consult a professional.<br><br>If you want to learn more about the diagnostic process, you can check out the video below:<\/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=\"2011 Ram 1500 Hemi Transmission Code P0846\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/5cmZ2w9gqvY?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 P0846 Code<\/h2>\n\n\n\n<p>Prior to any repair, you first need to have an accurate diagnosis of the issue. There isn&rsquo;t a cure-all fix for any <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"OBD-II code\">OBD-II code<\/a>. The process of fixing it is dependent on what part is causing the issue. Since there are a variety of possible causes for the P0846 code, there are also several possible ways to fix it.<\/p>\n\n\n\n<p>After accurately identifying the cause of the issue, you can consult <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 auto repair resources and how-to guides\">online auto repair resources and how-to guides<\/a>.<\/p>\n\n\n\n<p>Since all vehicles have different designs and configurations, a fix for an OBD-II code on a Jeep may not be applicable to a Mazda. You should <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"consult your vehicle&rsquo;s repair manual\">consult your vehicle&rsquo;s repair manual<\/a> when it comes to troubleshooting and repairing diagnostic trouble codes. Chilton repair manuals may also be useful. However, ALLDATA subscriptions are even better, as they provide detailed factory repair information for drivers who want to do repairs themselves.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Other Notes About P0846<\/h2>\n\n\n\n<p>There are several other codes that are related to the TFPS sensor. These include the P0845, P0847, P0848, and P0849 codes. This code typically applies to all vehicles equipped with OBD-II systems including but not limited to <a href=\"https:\/\/www.carparts.com\/jeep\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Jeep\">Jeep<\/a>, <a href=\"https:\/\/www.carparts.com\/nissan\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Nissan\">Nissan<\/a>, and <a href=\"https:\/\/www.carparts.com\/honda\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Honda\">Honda<\/a> vehicles.<\/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>If you encounter a P0846 code upon connecting a scan tool to your vehicle, this article can help you learn&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":64809,"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-64711","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 v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0846 Code: Transmission Fluid Pressure Sensor \/ Switch B Circuit Range Performance - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"The P0846 code is triggered when there\u2019s an issue with the transmission fluid sensor \/ switch. Learn more about its causes and symptoms here.\" \/>\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\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0846 Code: Transmission Fluid Pressure Sensor \/ Switch B Circuit Range Performance - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"The P0846 code is triggered when there\u2019s an issue with the transmission fluid sensor \/ switch. Learn more about its causes and symptoms here.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\/\" \/>\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=\"2022-01-17T06:05:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:11:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/01\/obd-diagnostic.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1145\" \/>\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\\\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0846-code-transmission-fluid-pressure-sensor-switch-b-circuit-range-performance\\\/\"},\"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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