{"id":78518,"date":"2025-08-08T09:58:36","date_gmt":"2025-08-08T14:58:36","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78518"},"modified":"2025-08-08T09:58:36","modified_gmt":"2025-08-08T14:58:36","slug":"p099e-obd2-shift-solenoid-h-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p099e-obd2-shift-solenoid-h-control-circuit-low","title":{"rendered":"P099E OBD2: Shift Solenoid &#8220;H&#8221; Control Circuit Low"},"content":{"rendered":"<p>The P099E code is an OBD-II trouble code that indicates a problem with the Shift Solenoid &#8220;H&#8221; Control Circuit. This issue arises when the Transmission Fluid Pressure Solenoid, which is crucial for smooth shifting in the transmission, is not functioning properly.<\/p>\n<h2>What Does the P099E Code Mean?<\/h2>\n<p>The P099E code is triggered when the engine control module (PCM) or transmission control module (TCM) detects a low voltage or malfunction in the electrical circuit related to the Shift Solenoid &#8220;H&#8221;. This can lead to improper shifting of the transmission.<\/p>\n<h2>What Causes the P099E Code?<\/h2>\n<ul>\n<li>Transmission Control Module (TCM) failure<\/li>\n<li>Low transmission fluid level<\/li>\n<li>Failure of the transmission shift solenoid<\/li>\n<li>Wiring issues affecting the solenoid circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P099E Code?<\/h2>\n<ul>\n<li>Transmission may not shift properly<\/li>\n<li>Increased fuel consumption<\/li>\n<li>Potential slipping of the transmission<\/li>\n<\/ul>\n<h2>How Serious Is the P099E Code?<\/h2>\n<p>The P099E code is classified as urgent, indicating that immediate attention is necessary to prevent significant damage to the vehicle or risk to driver safety. Ignoring this code can lead to transmission failure.<\/p>\n<h2>How to Diagnose the P099E Code<\/h2>\n<p>Diagnosing the P099E code typically involves the following steps:<\/p>\n<ol>\n<li>Connect an OBD-II scanner to retrieve the trouble codes.<\/li>\n<li>Inspect the wiring and connections related to the shift solenoid.<\/li>\n<li>Check the transmission fluid level and condition.<\/li>\n<li>Test the transmission control module and solenoid for proper functionality.<\/li>\n<\/ol>\n<h2>Common Repairs for the P099E Code<\/h2>\n<ul>\n<li>Replace faulty transmission shift solenoid<\/li>\n<li>Repair or replace damaged wiring or connectors<\/li>\n<li>Refill or replace transmission fluid if low or contaminated<\/li>\n<li>Replace the transmission control module if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P099E Code?<\/h2>\n<p>The cost to repair the P099E code can vary significantly based on the underlying issue. Basic repairs like fluid changes may cost around $100, while replacing a transmission control module or solenoid could range from $300 to $1,000 or more, depending on the vehicle make and model.<\/p>\n<h2>Can I Fix the P099E Code Myself?<\/h2>\n<p>While some basic troubleshooting and repairs, such as checking fluid levels or inspecting wiring, can be done by a knowledgeable DIYer, more complex issues are best left to a professional mechanic. Proper diagnosis is crucial to ensure that the root cause is addressed, rather than just treating symptoms.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P099E code is an OBD-II trouble code that indicates a problem with the Shift Solenoid &#8220;H&#8221; Control Circuit. This issue arises when the Transmission Fluid Pressure Solenoid, which is crucial for smooth shifting in the transmission, is not functioning properly. What Does the P099E Code Mean? The P099E code is triggered when the engine &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92353,"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-78518","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 P099E \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P099E code, what causes shift solenoid &quot;H&quot; control circuit low, 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\/p099e-obd2-shift-solenoid-h-control-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P099E OBD2: Shift Solenoid &quot;H&quot; Control Circuit Low\" \/>\n<meta property=\"og:description\" content=\"The P099E code is an OBD-II trouble code that indicates a problem with the Shift Solenoid &quot;H&quot; Control Circuit. This issue arises when the Transmission\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p099e-obd2-shift-solenoid-h-control-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=\"2025-08-08T14:58:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p099e-obd2-shift-solenoid-h-control-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\\\/p099e-obd2-shift-solenoid-h-control-circuit-low#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p099e-obd2-shift-solenoid-h-control-circuit-low\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P099E OBD2: Shift Solenoid &#8220;H&#8221; 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This issue arises when the Transmission Fluid Pressure Solenoid, which is crucial for smooth shifting in the transmission, is not functioning properly. What Does the P099E Code Mean? The P099E code is triggered when the engine&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78518","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=78518"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78518\/revisions"}],"predecessor-version":[{"id":85217,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78518\/revisions\/85217"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/92353"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78518"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78518"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78518"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}