{"id":79061,"date":"2025-07-16T21:13:58","date_gmt":"2025-07-17T02:13:58","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79061"},"modified":"2025-07-16T21:24:16","modified_gmt":"2025-07-17T02:24:16","slug":"p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal","title":{"rendered":"P0C1D OBD2: AUXILIARY Transmission Fluid Pump Control Module Internal"},"content":{"rendered":"<p>The P0C1D code is a diagnostic trouble code (DTC) that indicates an issue with the Auxiliary Transmission Fluid Pump Control Module. This module is responsible for ensuring that the Auxiliary Transmission Fluid Pump operates correctly, maintaining proper fluid pressure in the transmission.<\/p>\n<h2>What Does the P0C1D Code Mean?<\/h2>\n<p>The P0C1D code signifies that the Auxiliary Transmission Fluid Pump Control Module has failed a self-check. This failure means that the module is unable to perform its designated functions, which can lead to significant issues within the vehicle&#8217;s transmission system.<\/p>\n<h2>What Causes the P0C1D Code?<\/h2>\n<p>Several factors can lead to the triggering of the P0C1D code, including:<\/p>\n<ul>\n<li>Failure of the Auxiliary Transmission Fluid Pump Control Module<\/li>\n<li>Issues with wiring or connectors associated with the control module<\/li>\n<li>Faulty sensors that provide incorrect readings to the control module<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0C1D Code?<\/h2>\n<p>Common symptoms associated with the P0C1D code include:<\/p>\n<ul>\n<li>The vehicle may become immovable or experience difficulty shifting<\/li>\n<li>Transmission fluid leaks may be observed<\/li>\n<li>Warning lights may illuminate on the dashboard<\/li>\n<\/ul>\n<h2>How Serious Is the P0C1D Code?<\/h2>\n<p>The P0C1D code is classified as urgent, meaning immediate action is required. Failure to address this code can lead to severe damage to the vehicle&#8217;s transmission system, potentially leaving the vehicle inoperable and posing risks to the safety of the driver and passengers.<\/p>\n<h2>How to Diagnose the P0C1D Code<\/h2>\n<p>Diagnosing the P0C1D code involves several steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P0C1D code.<\/li>\n<li>Perform a visual inspection of the wiring and connectors related to the Auxiliary Transmission Fluid Pump Control Module for any damage or corrosion.<\/li>\n<li>Check the operation of the Auxiliary Transmission Fluid Pump to ensure it is functioning correctly.<\/li>\n<li>Test the control module for faults and ensure it is receiving proper signals from any associated sensors.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0C1D Code<\/h2>\n<p>Repairs for the P0C1D code may include:<\/p>\n<ul>\n<li>Replacing the Auxiliary Transmission Fluid Pump Control Module<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Replacing faulty sensors<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0C1D Code?<\/h2>\n<p>The cost to fix the P0C1D code can vary widely based on the specific issue and the labor rates in your area. Generally, repairs can range from $200 to $1,500, depending on whether parts need to be replaced or if extensive diagnostics are required.<\/p>\n<h2>Can I Fix the P0C1D Code Myself?<\/h2>\n<p>While some individuals with mechanical experience may be able to diagnose and repair the P0C1D code themselves, it is advisable to consult with a professional mechanic. Proper diagnosis and repair require specialized knowledge and tools, and attempting to fix it without the proper expertise may lead to further complications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0C1D code is a diagnostic trouble code (DTC) that indicates an issue with the Auxiliary Transmission Fluid Pump Control Module. This module is responsible for ensuring that the Auxiliary Transmission Fluid Pump operates correctly, maintaining proper fluid pressure in the transmission. What Does the P0C1D Code Mean? The P0C1D code signifies that the Auxiliary &hellip;<\/p>\n","protected":false},"author":26,"featured_media":90516,"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-79061","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 P0C1D \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0C1D code, what causes issues with the auxiliary transmission fluid pump control module, 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\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0C1D OBD2: AUXILIARY Transmission Fluid Pump Control Module Internal\" \/>\n<meta property=\"og:description\" content=\"The P0C1D code is a diagnostic trouble code (DTC) that indicates an issue with the Auxiliary Transmission Fluid Pump Control Module. 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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\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/07\/p0c1d-obd2-auxiliary-transmission-fluid-pump-control-module-internal-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":"The P0C1D code is a diagnostic trouble code (DTC) that indicates an issue with the Auxiliary Transmission Fluid Pump Control Module. This module is responsible for ensuring that the Auxiliary Transmission Fluid Pump operates correctly, maintaining proper fluid pressure in the transmission. What Does the P0C1D Code Mean? 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