{"id":79067,"date":"2025-07-16T19:37:16","date_gmt":"2025-07-17T00:37:16","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79067"},"modified":"2025-07-16T21:09:36","modified_gmt":"2025-07-17T02:09:36","slug":"p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuit-open","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuit-open","title":{"rendered":"P0C23 OBD2: AUXILIARY Transmission Fluid Pump Control Module Circuit\/Open"},"content":{"rendered":"<h2>What Does the P0C23 Code Mean?<\/h2>\n<p>The OBD-II code P0C23 indicates a malfunction within the Auxiliary Transmission Fluid Pump Control Module circuit. This code is triggered when the control module detects an open circuit or a failure to deliver the required voltage to the auxiliary transmission fluid pump.<\/p>\n<h2>What Causes the P0C23 Code?<\/h2>\n<p>Several factors can lead to the P0C23 code being stored in your vehicle&#8217;s computer system:<\/p>\n<ul>\n<li>Failure of the Auxiliary Transmission Fluid Pump Control Module<\/li>\n<li>Wiring issues, such as damaged or corroded wires<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0C23 Code?<\/h2>\n<p>When the P0C23 code is present, you may notice the following symptoms:<\/p>\n<ul>\n<li>The vehicle may become immovable, leading to potential breakdowns<\/li>\n<\/ul>\n<h2>How Serious Is the P0C23 Code?<\/h2>\n<p>The P0C23 code is classified as urgent, indicating that immediate action is necessary. Ignoring this code can lead to severe damage to the vehicle&#8217;s transmission system and pose safety risks to the driver and passengers.<\/p>\n<h2>How to Diagnose the P0C23 Code<\/h2>\n<p>Diagnosis of the P0C23 code typically includes the following steps:<\/p>\n<ul>\n<li>Using an OBD-II scanner to confirm the presence of the P0C23 code<\/li>\n<li>Inspecting the wiring and connections associated with the Auxiliary Transmission Fluid Pump Control Module<\/li>\n<li>Testing the voltage output to the control module<\/li>\n<\/ul>\n<h2>Common Repairs for the P0C23 Code<\/h2>\n<p>Repairs for the P0C23 code may involve:<\/p>\n<ul>\n<li>Replacing the Auxiliary Transmission Fluid Pump Control Module if found defective<\/li>\n<li>Repairing or replacing damaged wiring and connectors<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0C23 Code?<\/h2>\n<p>The cost to repair the P0C23 code can vary widely depending on the specific issue. Expect to pay anywhere from $150 to $600, depending on whether you need to replace the control module or repair wiring.<\/p>\n<h2>Can I Fix the P0C23 Code Myself?<\/h2>\n<p>While some vehicle owners may have the skills to diagnose and repair wiring issues, working with electronic control modules can be complex. If you&#8217;re not experienced with automotive repairs, it&#8217;s advisable to consult a professional mechanic to ensure the problem is accurately diagnosed and resolved.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0C23 Code Mean? The OBD-II code P0C23 indicates a malfunction within the Auxiliary Transmission Fluid Pump Control Module circuit. This code is triggered when the control module detects an open circuit or a failure to deliver the required voltage to the auxiliary transmission fluid pump. What Causes the P0C23 Code? Several factors &hellip;<\/p>\n","protected":false},"author":26,"featured_media":90483,"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-79067","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 v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P0C23 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0C23 code, what causes the auxiliary transmission fluid pump control module circuit\/open, and how to diagnose and fix common issues to maintain optimal engine performance.\" \/>\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\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuit-open\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0C23 OBD2: AUXILIARY Transmission Fluid Pump Control Module Circuit\/Open\" \/>\n<meta property=\"og:description\" content=\"What Does the P0C23 Code Mean? The OBD-II code P0C23 indicates a malfunction within the Auxiliary Transmission Fluid Pump Control Module circuit. This\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuit-open\" \/>\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=\"2025-07-17T00:37:16+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-17T02:09:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen.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\" content=\"JC 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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\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c23-obd2-auxiliary-transmission-fluid-pump-control-module-circuitopen-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 P0C23 Code Mean? The OBD-II code P0C23 indicates a malfunction within the Auxiliary Transmission Fluid Pump Control Module circuit. This code is triggered when the control module detects an open circuit or a failure to deliver the required voltage to the auxiliary transmission fluid pump. What Causes the P0C23 Code? Several factors&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79067","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=79067"}],"version-history":[{"count":3,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79067\/revisions"}],"predecessor-version":[{"id":90494,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79067\/revisions\/90494"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/90483"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}