{"id":46587,"date":"2021-12-09T19:01:53","date_gmt":"2021-12-10T03:01:53","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=46587"},"modified":"2024-08-19T23:51:23","modified_gmt":"2024-08-20T06:51:23","slug":"p0748-code-pressure-control-solenoid-a-electrical","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0748-code-pressure-control-solenoid-a-electrical\/","title":{"rendered":"P0748 Code: Pressure Control Solenoid \u201cA\u201d Electrical"},"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-column46587_56a7d2-4b > .kt-inside-inner-col,.kadence-column46587_56a7d2-4b > .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-column46587_56a7d2-4b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column46587_56a7d2-4b > .kt-inside-inner-col{flex-direction:column;}.kadence-column46587_56a7d2-4b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column46587_56a7d2-4b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column46587_56a7d2-4b{position:relative;}@media all and (max-width: 1024px){.kadence-column46587_56a7d2-4b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column46587_56a7d2-4b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column46587_56a7d2-4b inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-72bb25  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-2fa30a\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading46587_1858e1-25, .wp-block-kadence-advancedheading.kt-adv-heading46587_1858e1-25[data-kb-block=\"kb-adv-heading46587_1858e1-25\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading46587_1858e1-25 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading46587_1858e1-25[data-kb-block=\"kb-adv-heading46587_1858e1-25\"] 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-heading46587_1858e1-25 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading46587_1858e1-25[data-kb-block=\"kb-adv-heading46587_1858e1-25\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading46587_1858e1-25 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading46587_1858e1-25\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P0748 code stands for &ldquo;Pressure Control Solenoid &lsquo;A&rsquo; Electrical.&rdquo;&nbsp;<\/li>\n\n\n\n<li>It&rsquo;s triggered when the PCM detects complications in the pressure control solenoid that is designated &ldquo;A.&rdquo;<\/li>\n\n\n\n<li>A defective or faulty pressure control solenoid is one of the common triggers for the code.<\/li>\n\n\n\n<li>Erratic shifting and poor fuel economy are two common symptoms to look out for.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Electronically controlled automatic transmissions have a pressure control <a href=\"https:\/\/www.carparts.com\/automatic-transmission-solenoid\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"solenoid\">solenoid<\/a> that controls the transmission&rsquo;s hydraulic pressure. needed to make the transmission operate properly. If your <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) detects problems in your pressure control solenoids, it may trigger trouble codes, including code P0748.<\/p>\n\n\n\n<p>If a P0748 code pops up after using a scan tool, you need to get your vehicle fixed soon to avoid additional issues. Here&rsquo;s what you need to know about the P0748 code:<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0748 Code Mean?<\/h2>\n\n\n\n<p><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) P0748 stands for&nbsp; &ldquo;Pressure Control Solenoid &lsquo;A&rsquo; Electrical.&rdquo;&nbsp; This code is generally set by your PCM if it detects <strong>complications in the pressure control solenoid that is designated &ldquo;A.&rdquo;<\/strong> The electronic automatic transmission&rsquo;s pressure control solenoid(s) regulate transmission hydraulic pressure in response to throttle angle, engine speed, and prevailing load requirements.<\/p>\n\n\n\n<p>For example, if you&rsquo;re pulling a trailer up a hill, the ECM\/PCM will increase transmission line pressure to hold the gears longer and provide a firmer shift, because that&rsquo;s what&rsquo;s needed under those circumstances. If you aggressively accelerate even on flat pavement, the same command is delivered.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"715\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic-1024x715.jpg\" alt=\"pressure control solenoid circuit schematic\" class=\"wp-image-77787\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic-1024x715.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic-300x210.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic-768x537.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic-150x105.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/11\/pressure-control-solenoid-circuit-schematic.jpg 1324w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The illustration shows a basic pressure control solenoid circuit. Typically if there are &ldquo;A&rdquo; and &ldquo;B&rdquo; PC solenoids, there will obviously be more than one pressure control solenoid. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>Transmission line pressure determines shift timing and quality and if the electrical circuit controlling the Pressure Control Solenoid fails the line pressure will default to maximum. The transmission will usually shift much firmer and it may also shift later, depending on the platform. The firm shift protects the clutches to prevent them from burning out, which happens if they&rsquo;re not firmly applied and the transmission is providing torque to the output.<\/p>\n\n\n\n<p>&ldquo;Electrical&rdquo; indicates that this is a problem with the circuit rather than the mechanical part of the solenoid itself, although the solenoid winding may be the cause of the fault code.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code <\/em><em>P0748<\/em><em> 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\">What are the Possible Causes of the P0748 Code?<\/h2>\n\n\n\n<p>A P0748 code can be triggered by various vehicle problems. Here are this trouble code&rsquo;s most common causes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Defective or faulty pressure control solenoid<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-transmission-filter-symptoms-plus-faq\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dirty transmission filter\">Dirty transmission filter<\/a> and\/or fluid<\/li>\n\n\n\n<li>Faulty transmission pump and\/or <a href=\"https:\/\/www.carparts.com\/valve-body\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"valve body\">valve body<\/a><\/li>\n\n\n\n<li>Clogged hydraulic channels<\/li>\n\n\n\n<li>Wiring or connector damage<\/li>\n\n\n\n<li>PCM malfunction or damage<\/li>\n<\/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 P0748 Code?<\/h2>\n\n\n\n<p>Trouble codes can be accompanied by different symptoms. They can change depending on what is causing the P0748 code. Here are the most common symptoms of a P0748 code:<\/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>Erratic shifting<\/li>\n\n\n\n<li>Poor fuel economy<\/li>\n\n\n\n<li>Overheating transmission<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0748 Code<\/h2>\n\n\n\n<p>Like all trouble codes, P0748 can become difficult to diagnose. Diagnosis and troubleshooting can also vary, depending on your vehicle&rsquo;s make and model. Consulting a professional is the quickest way to fix issues causing your vehicle&rsquo;s P0748 code. However, you can get a good idea of how to diagnose this trouble code by watching this video:<\/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=\"2006 Dodge Ram 3500 P0748 Governor Pressure Circuit and CAN Bus Issue\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ObyturCfWrU?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 P0748 Code<\/h2>\n\n\n\n<p>Problems that cause trouble codes may not be a big deal at first. However, they can become severe over time. You can try working on a P0748 code from home, but fixing trouble codes can be too technical for a DIYer. Asking a mechanic for help is the fastest way to fix the P0748 code.<\/p>\n\n\n\n<p>You can get an understanding of the P0748 code by doing some research. First, you can determine what&rsquo;s causing the code and the complications related to it. Once you have all the information, you need to check a reliable <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> to work out the correct course of action.<\/p>\n\n\n\n<p>It is also a good idea to have your vehicle&rsquo;s repair manual on hand. Some fixes that work on other vehicles may not work for yours. What applies for a P0748 code in a <a href=\"https:\/\/www.carparts.com\/dodge\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dodge\">Dodge<\/a> may not apply for a <a href=\"https:\/\/www.carparts.com\/ford\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ford\">Ford<\/a>. Tread carefully as you try to resolve your vehicle&rsquo;s problems. If it becomes too difficult to do on your own, don&rsquo;t think twice about asking a mechanic for help.<\/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>Electronically controlled automatic transmissions have a pressure control solenoid that controls the transmission&rsquo;s hydraulic pressure. needed to make the transmission&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0748-code-pressure-control-solenoid-a-electrical\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":46594,"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":[1221],"ppma_author":[2607,2985],"class_list":{"0":"post-46587","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-solenoid","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0748 Code: Pressure Control Solenoid \u201cA\u201d Electrical - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn about the possible causes and common symptoms of the P0748 code in this quick guide. Read on for more.\" \/>\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\/p0748-code-pressure-control-solenoid-a-electrical\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0748 Code: Pressure Control Solenoid \u201cA\u201d Electrical - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn about the possible causes and common symptoms of the P0748 code in this quick guide. 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