{"id":78512,"date":"2025-08-08T09:58:55","date_gmt":"2025-08-08T14:58:55","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78512"},"modified":"2025-08-08T10:04:15","modified_gmt":"2025-08-08T15:04:15","slug":"p0998-obd2-shift-solenoid-f-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0998-obd2-shift-solenoid-f-control-circuit-low","title":{"rendered":"P0998 OBD2: Shift Solenoid &#8220;F&#8221; Control Circuit Low"},"content":{"rendered":"<h2>What Does the P0998 Code Mean?<\/h2>\n<p>The P0998 code is triggered when the engine control module (PCM) or transmission control module (TCM) detects a low electrical circuit condition in the shift solenoid &#8220;F&#8221;. This solenoid is responsible for controlling hydraulic fluid flow, which is essential for smooth gear shifting.<\/p>\n<h2>What Causes the P0998 Code?<\/h2>\n<p>Several factors can lead to the P0998 code being set, including:<\/p>\n<ul>\n<li>Transmission Control Module (TCM) failure<\/li>\n<li>Low transmission fluid level<\/li>\n<li>Transmission shift solenoid failure<\/li>\n<li>Wiring issues affecting the solenoid circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0998 Code?<\/h2>\n<p>When the P0998 code is present, you may experience 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 P0998 Code?<\/h2>\n<p>The P0998 code is classified as urgent, meaning that immediate action is necessary. Ignoring this code can lead to severe transmission damage, which could compromise the safety of the driver and passengers.<\/p>\n<h2>How to Diagnose the P0998 Code<\/h2>\n<p>To diagnose the P0998 code, a mechanic will typically follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P0998 code.<\/li>\n<li>Inspect the transmission fluid level and condition.<\/li>\n<li>Check for any wiring or connector issues related to the shift solenoid.<\/li>\n<li>Test the transmission control module and shift solenoid for proper operation.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0998 Code<\/h2>\n<p>Depending on the diagnosis, common repairs may include:<\/p>\n<ul>\n<li>Replacing the transmission control module (TCM)<\/li>\n<li>Refilling or replacing transmission fluid<\/li>\n<li>Replacing the faulty shift solenoid<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0998 Code?<\/h2>\n<p>The cost to repair the P0998 code can vary widely based on the underlying issue. Typical repair costs may range from $150 to $1,500, depending on whether you need to replace the TCM, shift solenoid, or repair wiring.<\/p>\n<h2>Can I Fix the P0998 Code Myself?<\/h2>\n<p>If you have mechanical knowledge and experience, you may be able to address minor issues like checking fluid levels or replacing a shift solenoid. However, due to the complexity of transmission systems, it is often recommended to seek professional assistance for proper diagnosis and repair to avoid further damage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0998 Code Mean? The P0998 code is triggered when the engine control module (PCM) or transmission control module (TCM) detects a low electrical circuit condition in the shift solenoid &#8220;F&#8221;. This solenoid is responsible for controlling hydraulic fluid flow, which is essential for smooth gear shifting. What Causes the P0998 Code? Several &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92365,"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-78512","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 P0998 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0998 code, what causes shift solenoid &quot;F&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\/p0998-obd2-shift-solenoid-f-control-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0998 OBD2: Shift Solenoid &quot;F&quot; Control Circuit Low\" \/>\n<meta property=\"og:description\" content=\"What Does the P0998 Code Mean? The P0998 code is triggered when the engine control module (PCM) or transmission control module (TCM) detects a low\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0998-obd2-shift-solenoid-f-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=\"2025-08-08T14:58:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-08T15:04:15+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-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\\\/p0998-obd2-shift-solenoid-f-control-circuit-low#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0998-obd2-shift-solenoid-f-control-circuit-low\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0998 OBD2: Shift Solenoid &#8220;F&#8221; 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He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. 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\/p0998-obd2-shift-solenoid-f-control-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0998-obd2-shift-solenoid-f-control-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":"What Does the P0998 Code Mean? The P0998 code is triggered when the engine control module (PCM) or transmission control module (TCM) detects a low electrical circuit condition in the shift solenoid &#8220;F&#8221;. This solenoid is responsible for controlling hydraulic fluid flow, which is essential for smooth gear shifting. What Causes the P0998 Code? Several&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78512","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=78512"}],"version-history":[{"count":3,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78512\/revisions"}],"predecessor-version":[{"id":92383,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78512\/revisions\/92383"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/92365"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}