{"id":78370,"date":"2025-08-15T14:31:55","date_gmt":"2025-08-15T19:31:55","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=78370"},"modified":"2025-08-15T14:31:55","modified_gmt":"2025-08-15T19:31:55","slug":"p0862-obd2-gear-shift-control-module-a-communication-circuit-high","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0862-obd2-gear-shift-control-module-a-communication-circuit-high","title":{"rendered":"P0862 OBD2: Gear Shift Control Module &#8220;A&#8221; Communication Circuit High"},"content":{"rendered":"<h2>What Does the P0862 Code Mean?<\/h2>\n<p>The P0862 OBD-II code indicates that there is a communication issue between the Transmission Control Module (TCM) and the Powertrain Control Module (PCM). This code is stored when the TCM cannot effectively communicate with the PCM, which is essential for proper transmission function.<\/p>\n<h2>What Causes the P0862 Code?<\/h2>\n<p>Several factors can trigger the P0862 code, including:<\/p>\n<ul>\n<li>Failure of the Powertrain Control Module (PCM)<\/li>\n<li>Failure of the Transmission Control Module (TCM)<\/li>\n<li>Wiring issues or damaged connectors between the TCM and PCM<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0862 Code?<\/h2>\n<p>Drivers may experience the following symptoms when the P0862 code is present:<\/p>\n<ul>\n<li>Transmission may not shift properly<\/li>\n<li>Engine may not start<\/li>\n<\/ul>\n<h2>How Serious Is the P0862 Code?<\/h2>\n<p>The P0862 code is considered urgent and serious. Ignoring this code can lead to significant damage to your vehicle&#8217;s transmission or even create safety hazards for the driver and passengers.<\/p>\n<h2>How to Diagnose the P0862 Code<\/h2>\n<p>Diagnosing the P0862 code typically involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm that the P0862 code is present.<\/li>\n<li>Inspect wiring and connectors between the TCM and PCM for damage or corrosion.<\/li>\n<li>Test the functionality of the TCM and PCM to rule out failures.<\/li>\n<li>Check for other related codes that may provide additional insight.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0862 Code<\/h2>\n<p>Common repairs to address the P0862 code include:<\/p>\n<ul>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Replacing a faulty TCM<\/li>\n<li>Replacing a faulty PCM<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0862 Code?<\/h2>\n<p>The cost to fix the P0862 code can vary widely based on the underlying issue. Minor wiring repairs may cost a couple of hundred dollars, while replacing the TCM or PCM can run anywhere from $500 to $2,000 or more, depending on the vehicle and labor costs.<\/p>\n<h2>Can I Fix the P0862 Code Myself?<\/h2>\n<p>If you have experience with automotive repair and diagnostics, you may be able to address minor wiring issues yourself. However, if the problem involves replacing the TCM or PCM, it is advisable to seek professional assistance to ensure proper installation and functionality.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0862 Code Mean? The P0862 OBD-II code indicates that there is a communication issue between the Transmission Control Module (TCM) and the Powertrain Control Module (PCM). This code is stored when the TCM cannot effectively communicate with the PCM, which is essential for proper transmission function. What Causes the P0862 Code? Several &hellip;<\/p>\n","protected":false},"author":26,"featured_media":92793,"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-78370","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 P0862 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0862 code, what causes Gear Shift Control Module &quot;A&quot; Communication Circuit High, 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\/p0862-obd2-gear-shift-control-module-a-communication-circuit-high\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0862 OBD2: Gear Shift Control Module &quot;A&quot; Communication Circuit High\" \/>\n<meta property=\"og:description\" content=\"What Does the P0862 Code Mean? 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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. 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The P0862 OBD-II code indicates that there is a communication issue between the Transmission Control Module (TCM) and the Powertrain Control Module (PCM). This code is stored when the TCM cannot effectively communicate with the PCM, which is essential for proper transmission function. What Causes the P0862 Code? Several&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78370","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=78370"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78370\/revisions"}],"predecessor-version":[{"id":85069,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/78370\/revisions\/85069"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/92793"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=78370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=78370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=78370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}