{"id":78508,"date":"2025-08-08T09:59:09","date_gmt":"2025-08-08T14:59:09","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78508"},"modified":"2025-08-08T09:59:09","modified_gmt":"2025-08-08T14:59:09","slug":"p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low","title":{"rendered":"P0994 OBD2: Transmission Fluid Pressure Sensor\/Switch &#8220;F&#8221; Circuit Low"},"content":{"rendered":"<p>The P0994 OBD-II code indicates a problem with the Transmission Fluid Pressure Sensor\/Switch &#8220;F&#8221; Circuit, signaling that the circuit is reading low pressure. This issue can lead to improper shifting and overall transmission performance.<\/p>\n<h2>What Does the P0994 Code Mean?<\/h2>\n<p>The P0994 code is a diagnostic trouble code (DTC) that refers to a malfunction in the Transmission Fluid Pressure Sensor or the switch that monitors the hydraulic fluid pressure within the transmission. When the Powertrain Control Module (PCM) or Transmission Control Module (TCM) identifies a low-pressure reading, it triggers this code.<\/p>\n<h2>What Causes the P0994 Code?<\/h2>\n<ul>\n<li>Transmission Control Module (TCM) failure<\/li>\n<li>Low transmission fluid level<\/li>\n<li>Faulty transmission fluid pressure sensor<\/li>\n<li>Wiring issues affecting the sensor or solenoid<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0994 Code?<\/h2>\n<ul>\n<li>Transmission may not shift properly<\/li>\n<li>Increased fuel consumption<\/li>\n<li>Delayed or harsh shifting<\/li>\n<li>Potential overheating of the transmission<\/li>\n<\/ul>\n<h2>How Serious Is the P0994 Code?<\/h2>\n<p>The P0994 code is categorized as urgent. If not addressed, it can lead to significant transmission issues, including potential failure, which could result in costly repairs and unsafe driving conditions.<\/p>\n<h2>How to Diagnose the P0994 Code<\/h2>\n<ol>\n<li>Use an OBD-II scanner to confirm the P0994 code and check for any additional codes.<\/li>\n<li>Inspect the transmission fluid level and quality; top off or replace fluid if necessary.<\/li>\n<li>Examine the wiring and connectors to the transmission fluid pressure sensor for damage or corrosion.<\/li>\n<li>Test the transmission fluid pressure sensor to ensure it is functioning correctly.<\/li>\n<li>Check the Transmission Control Module (TCM) for any faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0994 Code<\/h2>\n<ul>\n<li>Replacing the transmission fluid pressure sensor<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Refilling or changing the transmission fluid<\/li>\n<li>Replacing the Transmission Control Module (TCM) if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0994 Code?<\/h2>\n<p>The cost to fix the P0994 code can vary widely depending on the underlying issue. Simple repairs like changing the transmission fluid may cost $100 to $200, while replacing a faulty sensor or the TCM could range from $300 to $800 or more, depending on labor rates and parts.<\/p>\n<h2>Can I Fix the P0994 Code Myself?<\/h2>\n<p>While some aspects, such as checking fluid levels and replacing the transmission fluid, can be done by an experienced DIYer, diagnosing and fixing electrical issues or replacing sensors may require advanced automotive knowledge and tools. It&#8217;s advisable to consult a professional mechanic for a thorough diagnosis and repair.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0994 OBD-II code indicates a problem with the Transmission Fluid Pressure Sensor\/Switch &#8220;F&#8221; Circuit, signaling that the circuit is reading low pressure. This issue can lead to improper shifting and overall transmission performance. What Does the P0994 Code Mean? The P0994 code is a diagnostic trouble code (DTC) that refers to a malfunction in &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92373,"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-78508","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 P0994 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0994 code, what causes transmission fluid pressure sensor\/switch &quot;F&quot; circuit low, 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\/p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0994 OBD2: Transmission Fluid Pressure Sensor\/Switch &quot;F&quot; Circuit Low\" \/>\n<meta property=\"og:description\" content=\"The P0994 OBD-II code indicates a problem with the Transmission Fluid Pressure Sensor\/Switch &quot;F&quot; Circuit, signaling that the circuit is reading low\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low\" \/>\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=\"2025-08-08T14:59:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low.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\\\/p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0994-obd2-transmission-fluid-pressure-sensor-switch-f-circuit-low\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0994 OBD2: Transmission Fluid Pressure Sensor\\\/Switch &#8220;F&#8221; 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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\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0994-obd2-transmission-fluid-pressure-sensorswitch-f-circuit-low-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 P0994 OBD-II code indicates a problem with the Transmission Fluid Pressure Sensor\/Switch &#8220;F&#8221; Circuit, signaling that the circuit is reading low pressure. This issue can lead to improper shifting and overall transmission performance. What Does the P0994 Code Mean? 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