{"id":79831,"date":"2025-06-01T21:11:22","date_gmt":"2025-06-02T02:11:22","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79831"},"modified":"2025-06-04T04:00:13","modified_gmt":"2025-06-04T09:00:13","slug":"p2486-obd2-exhaust-gas-temperature-sensor-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low","title":{"rendered":"P2486 OBD2: Exhaust Gas Temperature Sensor Circuit Low"},"content":{"rendered":"<p>The P2486 code is a diagnostic trouble code (DTC) that indicates a low voltage signal from the exhaust gas temperature (EGT) sensor circuit. This code is specifically related to the exhaust system in vehicles equipped with diesel engines that use Diesel Exhaust Fluid (DEF) to reduce harmful emissions.<\/p>\n<h2>What Does the P2486 Code Mean?<\/h2>\n<p>The P2486 code signifies that the Powertrain Control Module (PCM) has detected an implausible signal from the EGT sensor. This sensor plays a crucial role in monitoring the temperature of the exhaust gases entering and exiting the Selective Catalytic Reduction (SCR) system. When the sensor fails or sends incorrect readings, it can trigger this fault code.<\/p>\n<h2>What Causes the P2486 Code?<\/h2>\n<ul>\n<li>Exhaust Gas Temperature (EGT) sensor failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues in the EGT sensor circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2486 Code?<\/h2>\n<ul>\n<li>Check Engine Light illuminated on the dashboard<\/li>\n<li>Decreased fuel efficiency<\/li>\n<li>Exhaust system performance issues<\/li>\n<\/ul>\n<h2>How Serious Is the P2486 Code?<\/h2>\n<p>While the P2486 code is categorized as moderate severity, it is essential to address it promptly. Ignoring the issue may lead to further complications within the exhaust system, potentially affecting vehicle performance and emissions.<\/p>\n<h2>How to Diagnose the P2486 Code<\/h2>\n<p>Proper diagnosis of the P2486 code typically involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P2486 code and check for any additional codes.<\/li>\n<li>Inspect the EGT sensor and its wiring for any visible damage or disconnections.<\/li>\n<li>Test the EGT sensor using a multimeter to ensure it\u2019s functioning correctly.<\/li>\n<li>Check the PCM for any software updates or faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P2486 Code<\/h2>\n<ul>\n<li>Replacing the faulty Exhaust Gas Temperature (EGT) sensor<\/li>\n<li>Repairing or replacing damaged wiring in the sensor circuit<\/li>\n<li>Reprogramming or replacing the Powertrain Control Module (PCM) if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2486 Code?<\/h2>\n<p>The cost to repair the P2486 code can vary widely based on the underlying issue. Replacing an EGT sensor typically ranges from $150 to $400, including parts and labor. If wiring issues or PCM problems are involved, the costs may increase significantly.<\/p>\n<h2>Can I Fix the P2486 Code Myself?<\/h2>\n<p>If you have experience with automotive repairs and the necessary tools, you may be able to diagnose and replace the EGT sensor yourself. However, if the issue is more complex, such as a PCM failure or wiring issues, it\u2019s recommended to seek professional assistance to ensure proper resolution.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P2486 code is a diagnostic trouble code (DTC) that indicates a low voltage signal from the exhaust gas temperature (EGT) sensor circuit. This code is specifically related to the exhaust system in vehicles equipped with diesel engines that use Diesel Exhaust Fluid (DEF) to reduce harmful emissions. What Does the P2486 Code Mean? The &hellip;<\/p>\n","protected":false},"author":26,"featured_media":83410,"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-79831","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 P2486 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2486 code, what causes exhaust gas temperature sensor 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\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2486 OBD2: Exhaust Gas Temperature Sensor Circuit Low\" \/>\n<meta property=\"og:description\" content=\"The P2486 code is a diagnostic trouble code (DTC) that indicates a low voltage signal from the exhaust gas temperature (EGT) sensor circuit. This code is\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2486-obd2-exhaust-gas-temperature-sensor-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=\"2025-06-02T02:11:22+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-04T09:00:13+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-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 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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\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2486-obd2-exhaust-gas-temperature-sensor-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":"The P2486 code is a diagnostic trouble code (DTC) that indicates a low voltage signal from the exhaust gas temperature (EGT) sensor circuit. This code is specifically related to the exhaust system in vehicles equipped with diesel engines that use Diesel Exhaust Fluid (DEF) to reduce harmful emissions. What Does the P2486 Code Mean? The&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79831","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=79831"}],"version-history":[{"count":3,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79831\/revisions"}],"predecessor-version":[{"id":83436,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79831\/revisions\/83436"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/83410"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}