{"id":78393,"date":"2025-08-14T13:48:57","date_gmt":"2025-08-14T18:48:57","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78393"},"modified":"2025-08-14T13:48:57","modified_gmt":"2025-08-14T18:48:57","slug":"p0885-obd2-tcm-power-relay-control-circuit-open","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-circuit-open","title":{"rendered":"P0885 OBD2: TCM Power Relay Control Circuit\/Open"},"content":{"rendered":"<p>The P0885 OBD-II code indicates an issue with the Transmission Control Module (TCM) power relay control circuit. This code is triggered when the TCM does not receive the proper voltage necessary for its operation, leading to potential issues with the vehicle&#8217;s transmission performance.<\/p>\n<h2>What Does the P0885 Code Mean?<\/h2>\n<p>The P0885 code specifically means that there is a fault in the power relay that controls the TCM. When the TCM fails to receive the required voltage, it communicates this to the engine control module (PCM), resulting in the P0885 code being set.<\/p>\n<h2>What Causes the P0885 Code?<\/h2>\n<p>Several factors can lead to the P0885 code being triggered, including:<\/p>\n<ul>\n<li>Transmission Control Module (TCM) failure<\/li>\n<li>Failure of the TCM relay<\/li>\n<li>Wiring issues or damaged connections<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0885 Code?<\/h2>\n<p>When the P0885 code is present, drivers may notice the following symptoms:<\/p>\n<ul>\n<li>Transmission may not shift properly<\/li>\n<li>Increased fuel consumption<\/li>\n<\/ul>\n<h2>How Serious Is the P0885 Code?<\/h2>\n<p>The P0885 code is considered to be of moderate severity. While it may not pose an immediate threat to vehicle safety or functionality, it is important to have it diagnosed and repaired in a reasonable timeframe to prevent further complications with the transmission system.<\/p>\n<h2>How to Diagnose the P0885 Code<\/h2>\n<p>Proper diagnosis of the P0885 code typically involves the following steps:<\/p>\n<ol>\n<li>Using an OBD-II scanner to confirm the presence of the P0885 code and any additional codes.<\/li>\n<li>Inspecting the TCM and its wiring for any visible damage or corrosion.<\/li>\n<li>Testing the TCM relay to ensure it is functioning correctly.<\/li>\n<li>Checking the voltage supply to the TCM to confirm it is receiving the necessary power.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0885 Code<\/h2>\n<p>Repairs for the P0885 code may include:<\/p>\n<ul>\n<li>Replacing a faulty Transmission Control Module (TCM)<\/li>\n<li>Replacing a defective TCM relay<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0885 Code?<\/h2>\n<p>The cost to fix the P0885 code can vary widely depending on the specific issue. On average, repairs may range from $100 to $500, with more extensive repairs involving replacement of the TCM or related components potentially costing more.<\/p>\n<h2>Can I Fix the P0885 Code Myself?<\/h2>\n<p>While some DIY enthusiasts may be able to perform basic inspections and repairs, diagnosing and fixing the P0885 code can be complex. It is recommended to seek assistance from a professional mechanic, especially if you are not experienced with automotive electrical systems.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0885 OBD-II code indicates an issue with the Transmission Control Module (TCM) power relay control circuit. This code is triggered when the TCM does not receive the proper voltage necessary for its operation, leading to potential issues with the vehicle&#8217;s transmission performance. What Does the P0885 Code Mean? The P0885 code specifically means that &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92727,"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-78393","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 P0885 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0885 code, what causes TCM power relay control circuit\/open issues, and how to diagnose and fix common problems to maintain optimal transmission 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\/p0885-obd2-tcm-power-relay-control-circuit-open\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0885 OBD2: TCM Power Relay Control Circuit\/Open\" \/>\n<meta property=\"og:description\" content=\"The P0885 OBD-II code indicates an issue with the Transmission Control Module (TCM) power relay control circuit. This code is triggered when the TCM does\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-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=\"2025-08-14T18:48:57+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0885-obd2-tcm-power-relay-control-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 Landry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-circuit-open#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-circuit-open\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0885 OBD2: TCM Power Relay Control Circuit\/Open\",\"datePublished\":\"2025-08-14T18:48:57+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-circuit-open\"},\"wordCount\":408,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.emanualonline.com\/blog\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0885-obd2-tcm-power-relay-control-circuit-open#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0885-obd2-tcm-power-relay-control-circuitopen.png\",\"articleSection\":[\"P Codes - 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This code is triggered when the TCM does not receive the proper voltage necessary for its operation, leading to potential issues with the vehicle&#8217;s transmission performance. What Does the P0885 Code Mean? The P0885 code specifically means that&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78393","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=78393"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78393\/revisions"}],"predecessor-version":[{"id":85092,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78393\/revisions\/85092"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/92727"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}