{"id":518780,"date":"2025-12-11T00:51:09","date_gmt":"2025-12-11T05:51:09","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/"},"modified":"2025-12-11T00:51:09","modified_gmt":"2025-12-11T05:51:09","slug":"dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/","title":{"rendered":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">P2798<\/div>\n<h1>P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps<\/h1>\n<p class=\"hero-subtitle\">\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>P2798 = \u201cElectric\/Auxiliary Transmission Fluid Pump A Control Circuit Low.\u201d <\/li>\n<li>Typical warning: transmission\u2011fluid\u2011pump lamp or reduced pump performance. <\/li>\n<li>May cause overheating, insufficient lubrication, delayed or erratic gear shifts. <\/li>\n<li>Primary culprits: faulty TCM\/PCM output, damaged wiring or connector, internal pump\u2011control failure. <\/li>\n<li>Diagnosis: scan for P2798, perform circuit voltage test, inspect wiring, verify pump operation, re\u2011program or replace the control module. <\/li>\n<li>Replacement cost (module only): $600\u2011$900 + $200\u2011$300 labor; Flagship One supplies VIN\u2011matched, pre\u2011programmed units. <\/li>\n<\/ul>\n<\/div>\n<h3>P2798 Code: Common Symptoms, Likely Causes, and Repair Steps <\/h3>\n<p>When the electric pump that circulates transmission fluid cannot maintain the required voltage, the vehicle\u2019s control system logs P2798. Drivers usually notice the transmission\u2011fluid\u2011pump warning lamp illuminated on the instrument cluster. In many cases the pump\u2019s output drops, so the transmission can overheat or fail to receive adequate lubrication. The most frequent operational signs are delayed gear engagement, occasional hard shifts, and a noticeable \u201csluggish\u201d feel when the vehicle moves from a stop. In severe cases the transmission may enter limp\u2011mode to protect itself, limiting speed to 30\u201140 mph. <\/p>\n<p>These symptoms appear because the pump\u2019s auxiliary motor is commanded by the transmission control module (TCM) or powertrain control module (PCM). A low\u2011voltage condition in the pump\u2019s control circuit tells the module that the pump cannot deliver the pressure needed for proper fluid flow, prompting the warning and the protective shift strategies. <\/p>\n<h2>Symptoms <\/h2>\n<ul>\n<li><strong>Transmission\u2011fluid\u2011pump warning lamp<\/strong> steady or flashing. <\/li>\n<li><strong>Reduced pump performance<\/strong> \u2013 fluid temperature rises above normal operating range (often &gt; 220 \u00b0F). <\/li>\n<li><strong>Delayed or harsh gear engagement<\/strong> \u2013 especially from park or neutral into first gear. <\/li>\n<li><strong>Erratic shifting<\/strong> \u2013 unexpected up\u2011shifts or down\u2011shifts, sometimes accompanied by a \u201cgear\u2011slip\u201d feeling. <\/li>\n<li><strong>Limp\u2011mode activation<\/strong> \u2013 vehicle limited to low speeds to protect the transmission. <\/li>\n<\/ul>\n<h2>Why This Happens <\/h2>\n<h3>Faulty TCM\/PCM Output Signal <\/h3>\n<p>The TCM\/PCM generates a PWM (pulse\u2011width\u2011modulated) voltage to drive Pump A. Corrosion, internal component failure, or software glitches can reduce the output below the minimum threshold (typically &lt; 5 V). When the module cannot sustain the required voltage, the pump stalls and the code is set. <\/p>\n<h3>Damaged Wiring or Connectors <\/h3>\n<p>The control circuit runs through a harness that traverses the engine bay and transmission tunnel. Pinched harnesses, corrosion at the pump connector, or broken pins create a high\u2011resistance path, dropping voltage at the pump motor. Even a clean connector with a loose clamp can produce the low\u2011voltage condition that triggers P2798. <\/p>\n<h3>Pump\u2011Control Motor Failure <\/h3>\n<p>Pump A contains an auxiliary electric motor and an integrated driver board. Overheating, moisture intrusion, or internal short circuits can cause the motor to draw excessive current, forcing the control module to lower the voltage output as a protective measure. <\/p>\n<h3>Software Calibration Errors <\/h3>\n<p>Occasionally the factory calibration for the pump\u2019s voltage limits is out of spec after a software update. The module may misinterpret normal voltage as low, setting the code even though the hardware is functional. <\/p>\n<h2>Diagnostic and Repair Procedures <\/h2>\n<ol>\n<li><strong>Read and Verify the Code<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Connect a dealer\u2011level OBD\u2011II scanner. Confirm P2798 and note any related codes (e.g., P0700, P0730). <\/p>\n<ol>\n<li><strong>Inspect the Pump\u2011A Circuit<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Visually examine the wiring harness for abrasion, chafing, or fluid contamination. <\/p>\n<p> &#8211; Disconnect the pump connector, clean the pins with electrical contact cleaner, and reseat securely. <\/p>\n<ol>\n<li><strong>Voltage Test<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; With the ignition ON, measure voltage at the pump\u2019s power terminal. A healthy circuit should read 9\u201112 V (depending on vehicle). <\/p>\n<p> &#8211; If voltage is below 5 V, trace back to the TCM\/PCM output pin. <\/p>\n<ol>\n<li><strong>TCM\/PCM Output Verification<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Use a scope or PWM meter on the module\u2019s output pin. Verify correct duty cycle (typically 60\u201180 %). <\/p>\n<p> &#8211; If the output is abnormal, the module may need re\u2011programming or replacement. <\/p>\n<ol>\n<li><strong>Pump Motor Test<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Apply a known good 12 V source directly to the pump motor (bypassing the control board). The motor should spin smoothly and generate pressure. <\/p>\n<p> &#8211; Failure at this stage indicates internal pump motor damage; the pump assembly is usually integrated with the control module and must be replaced as a unit. <\/p>\n<ol>\n<li><strong>Software Re\u2011calibration<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; If hardware checks out, update the TCM\/PCM software to the latest manufacturer calibration. Re\u2011flash the module using a factory\u2011approved tool. <\/p>\n<ol>\n<li><strong>Module Repair vs. Replacement<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Minor board damage (e.g., cracked solder joint) can sometimes be repaired by a qualified electronics specialist, but reliability is limited. <\/p>\n<p> &#8211; Persistent low\u2011voltage readings after wiring repair and software update strongly suggest a failing control module. <\/p>\n<ol>\n<li><strong>Replace and Program<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Install a new or refurbished TCM\/PCM that matches the vehicle\u2019s VIN. <\/p>\n<p> &#8211; Perform a full module programming cycle: load the correct calibration, verify communication with the transmission, and clear all codes. <\/p>\n<p><strong>Cost Estimate<\/strong> <\/p>\n<ul>\n<li>Diagnostic scan and wiring inspection: $100\u2011$150 labor. <\/li>\n<li>Voltage testing and module output verification: $80\u2011$120 labor. <\/li>\n<li>Module replacement (TCM\/PCM): $600\u2011$900 + $200\u2011$300 labor. <\/li>\n<li>Re\u2011programming (if required): $100\u2011$150 labor. <\/li>\n<\/ul>\n<h2>When Replacement Makes More Sense Than Repair <\/h2>\n<div class=\"flagship-logo-section\">\n<a href=\"https:\/\/www.fs1inc.com\/\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" alt=\"Flagship One\" class=\"flagship-logo\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\"\/><br \/>\n<\/a>\n<\/div>\n<p>Repeated low\u2011voltage events, inconsistent voltage readings after wiring repair, or a history of moisture intrusion often indicate that the control board has sustained irreversible damage. While board\u2011level repairs can temporarily restore function, they rarely survive the thermal and electrical stresses typical of transmission\u2011pump circuits. A compromised module also poses a risk of intermittent failures that can lead to transmission overheating or sudden loss of driveability. <\/p>\n<p>Modern control modules are complex and integrated with security and immobilizer systems. That\u2019s why choosing a replacement isn\u2019t only about the hardware\u2014it&#8217;s about correct programming and compatibility. <strong>Flagship One<\/strong> specializes in VIN\u2011matched control modules, providing a plug\u2011and\u2011drive solution backed by warranty. Their units arrive pre\u2011programmed to the exact software version required for your vehicle, eliminating the need for on\u2011site coding and reducing installation time. <\/p>\n<h2>Preventive Maintenance <\/h2>\n<ul>\n<li><strong>Keep the wiring harness dry<\/strong> \u2013 inspect for oil or coolant leaks that can degrade insulation. <\/li>\n<li><strong>Regularly clean connector terminals<\/strong> \u2013 use a soft brush and contact cleaner during scheduled service. <\/li>\n<li><strong>Monitor transmission fluid temperature<\/strong> \u2013 an unusually high temperature may indicate pump strain; address cooling system issues promptly. <\/li>\n<li><strong>Apply manufacturer\u2011approved software updates<\/strong> \u2013 stay current with TCM\/PCM calibrations to avoid latent low\u2011voltage thresholds. <\/li>\n<li><strong>Schedule periodic electrical system checks<\/strong> \u2013 a qualified technician can perform resistance checks on the pump circuit during routine service intervals (typically every 30 000 mi).<\/li>\n<\/ul>\n<div class=\"info-section\">\n<p><strong>Service Recommendation:<\/strong> Most issues related to this fault are diagnosed and corrected through inspection, wiring repair, and calibration rather than module replacement. For modules not typically replaced through aftermarket suppliers, diagnosis and repair should be performed by a certified automotive technician with access to factory service information and tooling.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Low pressure from Transmission Fluid Pump A on your vehicle triggers P2798, risking shift errors; scan the circuit, test wiring, and repair module.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-518780","post","type-post","status-publish","format-standard","hentry","category-auto-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog<\/title>\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.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Low pressure from Transmission Fluid Pump A on your vehicle triggers P2798, risking shift errors; scan the circuit, test wiring, and repair module.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-11T05:51:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps\",\"datePublished\":\"2025-12-11T05:51:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/\"},\"wordCount\":1117,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"articleSection\":[\"Auto News\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/\",\"name\":\"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"datePublished\":\"2025-12-11T05:51:09+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"width\":2560,\"height\":617},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. OEM Engine Computers  Control Modules\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\",\"name\":\"Flagship One, Inc.\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"width\":1341,\"height\":1098,\"caption\":\"Flagship One, Inc.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/flagshipone\",\"https:\\\/\\\/x.com\\\/theflagshipone\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC0oyKphffBM2qkJ-gKPmMXw\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\",\"name\":\"FlagshipOne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"caption\":\"FlagshipOne\"},\"description\":\"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.\",\"sameAs\":[\"https:\\\/\\\/www.fs1inc.com\\\/\",\"https:\\\/\\\/www.facebook.com\\\/flagshipone\\\/\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/fs1inc\"],\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/author\\\/flagship1inc\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/","og_locale":"en_US","og_type":"article","og_title":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog","og_description":"Low pressure from Transmission Fluid Pump A on your vehicle triggers P2798, risking shift errors; scan the circuit, test wiring, and repair module.","og_url":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2025-12-11T05:51:09+00:00","og_image":[{"url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","type":"","width":"","height":""}],"author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps","datePublished":"2025-12-11T05:51:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/"},"wordCount":1117,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","articleSection":["Auto News"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/","url":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/","name":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","datePublished":"2025-12-11T05:51:09+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#primaryimage","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","width":2560,"height":617},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p2798-electricauxiliary-transmission-fluid-pump-control-circuit-low\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P2798 Code Symptoms, Causes, Diagnosis and Repair Guide Steps"}]},{"@type":"WebSite","@id":"https:\/\/www.fs1inc.com\/blog\/#website","url":"https:\/\/www.fs1inc.com\/blog\/","name":"Flagship One Blog","description":"Flagship One Inc. OEM Engine Computers  Control Modules","publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fs1inc.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fs1inc.com\/blog\/#organization","name":"Flagship One, Inc.","url":"https:\/\/www.fs1inc.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","width":1341,"height":1098,"caption":"Flagship One, Inc."},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/flagshipone","https:\/\/x.com\/theflagshipone","https:\/\/www.instagram.com\/flagship_one","https:\/\/www.youtube.com\/channel\/UC0oyKphffBM2qkJ-gKPmMXw"]},{"@type":"Person","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700","name":"FlagshipOne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","caption":"FlagshipOne"},"description":"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.","sameAs":["https:\/\/www.fs1inc.com\/","https:\/\/www.facebook.com\/flagshipone\/","https:\/\/www.instagram.com\/flagship_one\/","https:\/\/www.linkedin.com\/company\/fs1inc"],"url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/"}]}},"_links":{"self":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/518780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/comments?post=518780"}],"version-history":[{"count":0,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/518780\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=518780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=518780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=518780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}