{"id":78381,"date":"2025-08-15T14:30:31","date_gmt":"2025-08-15T19:30:31","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78381"},"modified":"2025-08-15T14:30:31","modified_gmt":"2025-08-15T19:30:31","slug":"p0873-obd2-transmission-fluid-pressure-sensor-switch-c-circuit-high","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0873-obd2-transmission-fluid-pressure-sensor-switch-c-circuit-high","title":{"rendered":"P0873 OBD2: Transmission Fluid Pressure Sensor\/Switch &#8220;C&#8221; Circuit High"},"content":{"rendered":"<p>The P0873 code is an OBD-II trouble code that indicates an issue with the transmission fluid pressure sensor or switch. This code is particularly urgent as it can lead to significant malfunctions in your vehicle&#8217;s transmission system.<\/p>\n<h2>What Does the P0873 Code Mean?<\/h2>\n<p>The P0873 code means that the Transmission Control Module (TCM) has detected a high circuit signal from the Transmission Fluid Pressure Sensor. This sensor is responsible for monitoring the pressure of the fluid flowing through the transmission and communicating this information to the engine control module (PCM).<\/p>\n<h2>What Causes the P0873 Code?<\/h2>\n<p>Several factors can trigger the P0873 code, including:<\/p>\n<ul>\n<li>Transmission fluid pressure sensor failure<\/li>\n<li>Transmission Control Module (TCM) failure<\/li>\n<li>Wiring issues such as short circuits or damaged wiring<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0873 Code?<\/h2>\n<p>Drivers experiencing a P0873 code 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 P0873 Code?<\/h2>\n<p>The P0873 code is classified as urgent. Ignoring this code can lead to severe damage to the transmission system, which could ultimately compromise vehicle safety. Immediate action is recommended to avoid further complications.<\/p>\n<h2>How to Diagnose the P0873 Code<\/h2>\n<p>To diagnose the P0873 code, follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P0873 code and check for any additional trouble codes.<\/li>\n<li>Inspect the transmission fluid level and condition.<\/li>\n<li>Check the wiring and connectors related to the transmission fluid pressure sensor.<\/li>\n<li>Test the transmission fluid pressure sensor for proper operation.<\/li>\n<li>Evaluate the Transmission Control Module for faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0873 Code<\/h2>\n<p>Repairs for the P0873 code may include:<\/p>\n<ul>\n<li>Replacing the transmission fluid pressure sensor<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Replacing or repairing the Transmission Control Module (TCM)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0873 Code?<\/h2>\n<p>The cost of repairing the P0873 code can vary widely depending on the underlying issue. On average, repairs can range from $100 to $1,000, depending on whether a sensor, wiring, or TCM replacement is needed.<\/p>\n<h2>Can I Fix the P0873 Code Myself?<\/h2>\n<p>If you have experience with automotive repairs and diagnostics, you may be able to address the P0873 code yourself. However, it is crucial to conduct a thorough diagnosis before making any repairs. If you are unsure, it is advisable to seek professional assistance to ensure the problem is correctly identified and resolved.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0873 code is an OBD-II trouble code that indicates an issue with the transmission fluid pressure sensor or switch. This code is particularly urgent as it can lead to significant malfunctions in your vehicle&#8217;s transmission system. What Does the P0873 Code Mean? The P0873 code means that the Transmission Control Module (TCM) has detected &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92771,"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-78381","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 P0873 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0873 code, what causes transmission fluid pressure sensor\/switch &quot;C&quot; circuit high, and how to diagnose and fix common issues 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\/p0873-obd2-transmission-fluid-pressure-sensor-switch-c-circuit-high\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0873 OBD2: Transmission Fluid Pressure Sensor\/Switch &quot;C&quot; Circuit High\" \/>\n<meta property=\"og:description\" content=\"The P0873 code is an OBD-II trouble code that indicates an issue with the transmission fluid pressure sensor or switch. 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