{"id":78221,"date":"2025-08-21T13:17:50","date_gmt":"2025-08-21T18:17:50","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78221"},"modified":"2025-08-21T13:17:50","modified_gmt":"2025-08-21T18:17:50","slug":"p0787-obd2-shift-timing-solenoid-a-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0787-obd2-shift-timing-solenoid-a-low","title":{"rendered":"P0787 OBD2: Shift Timing Solenoid &#8220;A&#8221; Low"},"content":{"rendered":"<p>The P0787 OBD-II code refers to an issue with the shift timing solenoid &#8220;A&#8221; in the transmission system. This code signifies that the Transmission Control Module (TCM) has detected a low performance level from the solenoid which is essential for controlling hydraulic pressure in the transmission.<\/p>\n<h2>What Does the P0787 Code Mean?<\/h2>\n<p>OBD-II Code P0787 is defined as a Shift Timing Solenoid &#8220;A&#8221; Low. The TCM uses this solenoid to manage the hydraulic pressure necessary for applying different clutch packs in the transmission. When the solenoid isn&#8217;t functioning correctly, the TCM triggers this code to indicate a problem.<\/p>\n<h2>What Causes the P0787 Code?<\/h2>\n<p>Several factors can contribute to the P0787 code, including:<\/p>\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>Issues with the transmission valve body<\/li>\n<li>Wiring problems affecting the solenoid&#8217;s operation<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0787 Code?<\/h2>\n<p>Common symptoms associated with the P0787 code include:<\/p>\n<ul>\n<li>Increased fuel consumption<\/li>\n<li>Transmission may not shift properly<\/li>\n<\/ul>\n<h2>How Serious Is the P0787 Code?<\/h2>\n<p>The P0787 code is classified as urgent, indicating that immediate attention is necessary. Ignoring this code can lead to significant vehicle damage and potential safety hazards for the driver and passengers.<\/p>\n<h2>How to Diagnose the P0787 Code<\/h2>\n<p>To diagnose the P0787 code, a mechanic will typically perform the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P0787 code.<\/li>\n<li>Inspect the transmission fluid level and quality.<\/li>\n<li>Check for any wiring issues or damaged connectors related to the shift solenoid.<\/li>\n<li>Test the shift solenoid and TCM for proper functionality.<\/li>\n<li>Examine the transmission valve body for any faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0787 Code<\/h2>\n<p>Repairs for the P0787 code may include:<\/p>\n<ul>\n<li>Replacing the faulty shift solenoid<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Refilling or changing the transmission fluid<\/li>\n<li>Repairing or replacing the TCM<\/li>\n<li>Fixing issues related to the transmission valve body<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0787 Code?<\/h2>\n<p>The cost to fix the P0787 code can vary significantly depending on the underlying issue. Generally, repairs can range from $150 to $1,500, depending on whether parts such as the shift solenoid or TCM need to be replaced.<\/p>\n<h2>Can I Fix the P0787 Code Myself?<\/h2>\n<p>While some DIYers may be able to diagnose and fix minor issues like low transmission fluid or wiring problems, it is recommended to consult with a professional mechanic for comprehensive diagnostics and repairs. Proper diagnosis is crucial to avoid unnecessary repairs and ensure vehicle safety.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0787 OBD-II code refers to an issue with the shift timing solenoid &#8220;A&#8221; in the transmission system. This code signifies that the Transmission Control Module (TCM) has detected a low performance level from the solenoid which is essential for controlling hydraulic pressure in the transmission. What Does the P0787 Code Mean? OBD-II Code P0787 &hellip;<\/p>\n","protected":false},"author":26,"featured_media":93222,"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-78221","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 P0787 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0787 code, what causes shift timing solenoid &quot;A&quot; 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\/p0787-obd2-shift-timing-solenoid-a-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0787 OBD2: Shift Timing Solenoid &quot;A&quot; Low\" \/>\n<meta property=\"og:description\" content=\"The P0787 OBD-II code refers to an issue with the shift timing solenoid &quot;A&quot; in the transmission system. This code signifies that the Transmission Control\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0787-obd2-shift-timing-solenoid-a-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=\"2025-08-21T18:17:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0787-obd2-shift-timing-solenoid-a-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\\\/p0787-obd2-shift-timing-solenoid-a-low#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0787-obd2-shift-timing-solenoid-a-low\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0787 OBD2: Shift Timing Solenoid &#8220;A&#8221; 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This code signifies that the Transmission Control Module (TCM) has detected a low performance level from the solenoid which is essential for controlling hydraulic pressure in the transmission. What Does the P0787 Code Mean? OBD-II Code P0787&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78221","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=78221"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78221\/revisions"}],"predecessor-version":[{"id":84920,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78221\/revisions\/84920"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/93222"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78221"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78221"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}