{"id":79072,"date":"2025-07-16T19:36:57","date_gmt":"2025-07-17T00:36:57","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79072"},"modified":"2025-07-16T19:36:57","modified_gmt":"2025-07-17T00:36:57","slug":"p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high","title":{"rendered":"P0C28 OBD2: AUXILIARY Transmission Fluid Pump Motor Current High"},"content":{"rendered":"<h2>What Does the P0C28 Code Mean?<\/h2>\n<p>The P0C28 code indicates that there is an issue with the Auxiliary Transmission Fluid Pump Motor, specifically that its current draw is higher than expected. This code is logged when the Transmission Control Module (TCM) detects that the pump is not operating as it should.<\/p>\n<h2>What Causes the P0C28 Code?<\/h2>\n<p>The P0C28 code can be triggered by several factors, including:<\/p>\n<ul>\n<li>Failure of the Auxiliary Transmission Fluid Pump<\/li>\n<li>Malfunction of the Drive Motor Generator Power Inverter Control Module<\/li>\n<li>Transmission Control Module (TCM) failure<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0C28 Code?<\/h2>\n<p>Symptoms associated with the P0C28 code may include:<\/p>\n<ul>\n<li>The vehicle may be immovable<\/li>\n<\/ul>\n<h2>How Serious Is the P0C28 Code?<\/h2>\n<p>The P0C28 code is classified as urgent. It indicates a significant malfunction that could lead to severe damage to the vehicle or endanger the safety of the driver and passengers. Immediate attention is required to prevent further complications.<\/p>\n<h2>How to Diagnose the P0C28 Code<\/h2>\n<p>To diagnose the P0C28 code, a mechanic should follow these steps:<\/p>\n<ul>\n<li>Use an OBD-II scanner to confirm the presence of the P0C28 code.<\/li>\n<li>Check for additional trouble codes that may provide further context.<\/li>\n<li>Inspect the Auxiliary Transmission Fluid Pump for any visible signs of damage or wear.<\/li>\n<li>Test the electrical connections and wiring associated with the pump and TCM.<\/li>\n<li>Perform a functional test of the Auxiliary Transmission Fluid Pump.<\/li>\n<\/ul>\n<h2>Common Repairs for the P0C28 Code<\/h2>\n<p>Typical repair solutions for the P0C28 code may include:<\/p>\n<ul>\n<li>Replacing the Auxiliary Transmission Fluid Pump<\/li>\n<li>Repairing or replacing faulty wiring or connectors<\/li>\n<li>Reprogramming or replacing the Transmission Control Module (TCM)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0C28 Code?<\/h2>\n<p>The cost to repair the P0C28 code can vary significantly based on the specific issue and the make and model of the vehicle. On average, you can expect to pay between $200 to $1,500, depending on whether you need a simple repair or a more complex component replacement.<\/p>\n<h2>Can I Fix the P0C28 Code Myself?<\/h2>\n<p>While it is possible for a knowledgeable DIYer to address some of the issues related to the P0C28 code, such as checking wiring or replacing a pump, it is generally recommended to consult with a professional mechanic. Proper diagnosis is critical to ensure that the root cause of the problem is resolved and to avoid further damage to the vehicle.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0C28 Code Mean? The P0C28 code indicates that there is an issue with the Auxiliary Transmission Fluid Pump Motor, specifically that its current draw is higher than expected. This code is logged when the Transmission Control Module (TCM) detects that the pump is not operating as it should. What Causes the P0C28 &hellip;<\/p>\n","protected":false},"author":26,"featured_media":90473,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-79072","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OBD2 Code P0C28 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0C28 code, what causes the auxiliary transmission fluid pump motor current high issue, and how to diagnose and fix common problems.\" \/>\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.emanualonline.com\/blog\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0C28 OBD2: AUXILIARY Transmission Fluid Pump Motor Current High\" \/>\n<meta property=\"og:description\" content=\"What Does the P0C28 Code Mean? The P0C28 code indicates that there is an issue with the Auxiliary Transmission Fluid Pump Motor, specifically that its\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-17T00:36:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c28-obd2-auxiliary-transmission-fluid-pump-motor-current-high-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"What Does the P0C28 Code Mean? The P0C28 code indicates that there is an issue with the Auxiliary Transmission Fluid Pump Motor, specifically that its current draw is higher than expected. This code is logged when the Transmission Control Module (TCM) detects that the pump is not operating as it should. What Causes the P0C28&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=79072"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79072\/revisions"}],"predecessor-version":[{"id":85771,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79072\/revisions\/85771"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/90473"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}