{"id":77008,"date":"2025-09-17T12:39:55","date_gmt":"2025-09-17T17:39:55","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77008"},"modified":"2025-09-17T12:53:03","modified_gmt":"2025-09-17T17:53:03","slug":"p0731-obd2-gear-1-incorrect-ratio","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio","title":{"rendered":"P0731 OBD2: Gear 1 Incorrect Ratio"},"content":{"rendered":"<h2>What Does the P0731 Code Mean?<\/h2>\n<p>When the P0731 code is triggered, it means that the Powertrain Control Module (PCM) has detected an incorrect ratio in Gear 1. Specifically, it indicates a significant RPM difference between the Input RPM Sensor and the Transmission Output RPM Sensor when the vehicle is in first gear. This discrepancy can occur during gear shifts or while maintaining a steady speed.<\/p>\n<h2>What Causes the P0731 Code?<\/h2>\n<p>Several factors can lead to the P0731 code being set, including:<\/p>\n<ul>\n<li>Defective Gear 1 Shift Solenoid<\/li>\n<li>Defective Forward Clutch<\/li>\n<li>Defective Engine Coolant Temperature Sensor<\/li>\n<li>Defective Valve Body<\/li>\n<li>Dirty transmission fluid that restricts hydraulic passages<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0731 Code?<\/h2>\n<p>The symptoms associated with the P0731 code may include:<\/p>\n<ul>\n<li>Illumination of the Check Engine Light<\/li>\n<li>Improper shifting of gears<\/li>\n<li>Decrease in fuel economy<\/li>\n<li>In some cases, no noticeable adverse conditions<\/li>\n<li>Performance issues such as slipping gear shifts<\/li>\n<\/ul>\n<h2>How Serious Is the P0731 Code?<\/h2>\n<p>The P0731 code is classified as an urgent issue that requires immediate attention. Ignoring this code can lead to severe damage to the transmission, which can be costly to repair and may pose safety risks to the driver and passengers.<\/p>\n<h2>How to Diagnose the P0731 Code<\/h2>\n<p>To diagnose the P0731 code, follow these steps:<\/p>\n<ol>\n<li>Record the freeze frame information related to the code.<\/li>\n<li>Conduct a test drive to replicate the conditions under which the code was set.<\/li>\n<li>Monitor engine load, throttle position, RPM, and road speed for anomalies.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0731 Code<\/h2>\n<p>Repairs for the P0731 code may include:<\/p>\n<ul>\n<li>Replacing a defective Gear 1 Shift Solenoid<\/li>\n<li>Repairing or replacing the Forward Clutch<\/li>\n<li>Replacing the Engine Coolant Temperature Sensor<\/li>\n<li>Replacing or repairing the Valve Body<\/li>\n<li>Flushing and replacing dirty transmission fluid<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0731 Code?<\/h2>\n<p>The cost to fix the P0731 code can vary widely depending on the exact issue and the make and model of the vehicle. On average, you can expect to pay between $150 to $1,500 for repairs, including labor and parts. A comprehensive diagnostic may also add to the total cost.<\/p>\n<h2>Can I Fix the P0731 Code Myself?<\/h2>\n<p>While some basic troubleshooting and fluid checks can be performed by a knowledgeable DIYer, fixing the P0731 code often requires specialized tools and expertise in transmission systems. If you are not experienced in automotive repairs, it is advisable to consult a professional mechanic to avoid further complications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0731 Code Mean? When the P0731 code is triggered, it means that the Powertrain Control Module (PCM) has detected an incorrect ratio in Gear 1. Specifically, it indicates a significant RPM difference between the Input RPM Sensor and the Transmission Output RPM Sensor when the vehicle is in first gear. This discrepancy &hellip;<\/p>\n","protected":false},"author":26,"featured_media":96772,"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-77008","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 P0731 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0731 code, what causes gear 1 incorrect ratio, 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\/p0731-obd2-gear-1-incorrect-ratio\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0731 OBD2: Gear 1 Incorrect Ratio\" \/>\n<meta property=\"og:description\" content=\"What Does the P0731 Code Mean? When the P0731 code is triggered, it means that the Powertrain Control Module (PCM) has detected an incorrect ratio in Gear\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio\" \/>\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=\"2025-09-17T17:39:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-17T17:53:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.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\\\/p0731-obd2-gear-1-incorrect-ratio#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0731 OBD2: Gear 1 Incorrect Ratio\",\"datePublished\":\"2025-09-17T17:39:55+00:00\",\"dateModified\":\"2025-09-17T17:53:03+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio\"},\"wordCount\":402,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/p0731-obd2-gear-1-incorrect-ratio.png\",\"articleSection\":[\"P Codes - OBD2 Powertrain Codes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio\",\"name\":\"OBD2 Code P0731 \u2013 Causes, Symptoms, and Repairs\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/p0731-obd2-gear-1-incorrect-ratio.png\",\"datePublished\":\"2025-09-17T17:39:55+00:00\",\"dateModified\":\"2025-09-17T17:53:03+00:00\",\"description\":\"Learn all about the P0731 code, what causes gear 1 incorrect ratio, and how to diagnose and fix common issues to maintain optimal engine performance.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#primaryimage\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/p0731-obd2-gear-1-incorrect-ratio.png\",\"contentUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/09\\\/p0731-obd2-gear-1-incorrect-ratio.png\",\"width\":1200,\"height\":675,\"caption\":\"P0731 OBD2: Gear 1 Incorrect Ratio\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/p0731-obd2-gear-1-incorrect-ratio#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P0731 OBD2: Gear 1 Incorrect Ratio\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\",\"name\":\"eManualOnline Blog\",\"description\":\"Free Tips on Car Service, Repair and General Stuff\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#organization\",\"name\":\"eManualOnline\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/cdm.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/04\\\/LOGO-NEW.png\",\"contentUrl\":\"https:\\\/\\\/cdm.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/04\\\/LOGO-NEW.png\",\"width\":512,\"height\":82,\"caption\":\"eManualOnline\"},\"image\":{\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/EmanualOnline\\\/\",\"https:\\\/\\\/x.com\\\/eManualOnline\",\"https:\\\/\\\/www.instagram.com\\\/emanual.online\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/emanualonline\",\"https:\\\/\\\/www.pinterest.com\\\/emanualonline\\\/\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/#\\\/schema\\\/person\\\/e803434ab3cc70008b22b56253223403\",\"name\":\"JC Landry\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"url\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"contentUrl\":\"https:\\\/\\\/www.emanualonline.com\\\/blog\\\/wp-content\\\/uploads\\\/2020\\\/07\\\/Jee-150x150.jpg\",\"caption\":\"JC Landry\"},\"description\":\"JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of\u00a0TheMechanicDoctor.com, only to name a few. 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\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"OBD2 Code P0731 \u2013 Causes, Symptoms, and Repairs","description":"Learn all about the P0731 code, what causes gear 1 incorrect ratio, and how to diagnose and fix common issues to maintain optimal engine performance.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio","og_locale":"en_US","og_type":"article","og_title":"P0731 OBD2: Gear 1 Incorrect Ratio","og_description":"What Does the P0731 Code Mean? When the P0731 code is triggered, it means that the Powertrain Control Module (PCM) has detected an incorrect ratio in Gear","og_url":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio","og_site_name":"eManualOnline Blog","article_publisher":"https:\/\/www.facebook.com\/EmanualOnline\/","article_author":"https:\/\/www.facebook.com\/jee514","article_published_time":"2025-09-17T17:39:55+00:00","article_modified_time":"2025-09-17T17:53:03+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png","type":"image\/png"}],"author":"JC Landry","twitter_card":"summary_large_image","twitter_creator":"@eManualOnline","twitter_site":"@eManualOnline","twitter_misc":{"Written by":"JC Landry","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#article","isPartOf":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio"},"author":{"name":"JC Landry","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403"},"headline":"P0731 OBD2: Gear 1 Incorrect Ratio","datePublished":"2025-09-17T17:39:55+00:00","dateModified":"2025-09-17T17:53:03+00:00","mainEntityOfPage":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio"},"wordCount":402,"commentCount":0,"publisher":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#primaryimage"},"thumbnailUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png","articleSection":["P Codes - OBD2 Powertrain Codes"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#respond"]}],"copyrightYear":"2025","copyrightHolder":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio","url":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio","name":"OBD2 Code P0731 \u2013 Causes, Symptoms, and Repairs","isPartOf":{"@id":"https:\/\/www.emanualonline.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#primaryimage"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#primaryimage"},"thumbnailUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png","datePublished":"2025-09-17T17:39:55+00:00","dateModified":"2025-09-17T17:53:03+00:00","description":"Learn all about the P0731 code, what causes gear 1 incorrect ratio, and how to diagnose and fix common issues to maintain optimal engine performance.","breadcrumb":{"@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#primaryimage","url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png","contentUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png","width":1200,"height":675,"caption":"P0731 OBD2: Gear 1 Incorrect Ratio"},{"@type":"BreadcrumbList","@id":"https:\/\/www.emanualonline.com\/blog\/p0731-obd2-gear-1-incorrect-ratio#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.emanualonline.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P0731 OBD2: Gear 1 Incorrect Ratio"}]},{"@type":"WebSite","@id":"https:\/\/www.emanualonline.com\/blog\/#website","url":"https:\/\/www.emanualonline.com\/blog\/","name":"eManualOnline Blog","description":"Free Tips on Car Service, Repair and General Stuff","publisher":{"@id":"https:\/\/www.emanualonline.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.emanualonline.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.emanualonline.com\/blog\/#organization","name":"eManualOnline","url":"https:\/\/www.emanualonline.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/cdm.emanualonline.com\/blog\/wp-content\/uploads\/2021\/04\/LOGO-NEW.png","contentUrl":"https:\/\/cdm.emanualonline.com\/blog\/wp-content\/uploads\/2021\/04\/LOGO-NEW.png","width":512,"height":82,"caption":"eManualOnline"},"image":{"@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/EmanualOnline\/","https:\/\/x.com\/eManualOnline","https:\/\/www.instagram.com\/emanual.online\/","https:\/\/www.linkedin.com\/company\/emanualonline","https:\/\/www.pinterest.com\/emanualonline\/"]},{"@type":"Person","@id":"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403","name":"JC Landry","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","url":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","contentUrl":"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2020\/07\/Jee-150x150.jpg","caption":"JC Landry"},"description":"JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of\u00a0TheMechanicDoctor.com, only to name a few. 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\/09\/p0731-obd2-gear-1-incorrect-ratio.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0731-obd2-gear-1-incorrect-ratio-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 P0731 Code Mean? When the P0731 code is triggered, it means that the Powertrain Control Module (PCM) has detected an incorrect ratio in Gear 1. Specifically, it indicates a significant RPM difference between the Input RPM Sensor and the Transmission Output RPM Sensor when the vehicle is in first gear. This discrepancy&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77008","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=77008"}],"version-history":[{"count":3,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77008\/revisions"}],"predecessor-version":[{"id":96783,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77008\/revisions\/96783"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/96772"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77008"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77008"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77008"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}