{"id":79396,"date":"2025-06-18T13:00:21","date_gmt":"2025-06-18T18:00:21","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79396"},"modified":"2025-06-18T13:00:21","modified_gmt":"2025-06-18T18:00:21","slug":"p20e5-obd2-exhaust-gas-temperature-sensor-1-2-correlation","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p20e5-obd2-exhaust-gas-temperature-sensor-1-2-correlation","title":{"rendered":"P20E5 OBD2: Exhaust Gas Temperature Sensor 1\/2 Correlation"},"content":{"rendered":"<p>The P20E5 OBD-II code indicates an issue with the Exhaust Gas Temperature Sensor 1\/2 correlation. This code is stored when the engine control module (PCM) detects an implausible signal from the exhaust gas temperature sensor.<\/p>\n<h2>What Does the P20E5 Code Mean?<\/h2>\n<p>The P20E5 code signifies a problem related to the exhaust gas temperature sensors used in conjunction with the Selective Catalytic Reduction (SCR) system. The PCM relies on data from these sensors to manage engine performance and emissions.<\/p>\n<h2>What Causes the P20E5 Code?<\/h2>\n<p>Several factors can trigger the P20E5 code, including:<\/p>\n<ul>\n<li>Exhaust Gas Temperature (EGT) sensor failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues connected to the EGT sensors<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P20E5 Code?<\/h2>\n<p>Symptoms associated with the P20E5 code may include:<\/p>\n<ul>\n<li>Check Engine Light illuminated<\/li>\n<li>Decreased engine performance<\/li>\n<li>Increased emissions<\/li>\n<li>Potential overheating of the SCR system<\/li>\n<\/ul>\n<h2>How Serious Is the P20E5 Code?<\/h2>\n<p>The severity of the P20E5 code is classified as moderate. While it may not pose an immediate threat to vehicle safety or functionality, it is crucial to address the issue promptly to prevent further complications and ensure optimal vehicle performance.<\/p>\n<h2>How to Diagnose the P20E5 Code<\/h2>\n<p>Diagnosing the P20E5 code should be performed by a professional mechanic using the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the presence of the P20E5 code.<\/li>\n<li>Inspect the wiring and connections related to the EGT sensors for any visible damage or corrosion.<\/li>\n<li>Test the EGT sensors for proper function and resistance levels.<\/li>\n<li>Check the PCM for any software updates or known issues.<\/li>\n<\/ol>\n<h2>Common Repairs for the P20E5 Code<\/h2>\n<p>Repairs for the P20E5 code may include:<\/p>\n<ul>\n<li>Replacing faulty Exhaust Gas Temperature (EGT) sensors<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Reprogramming or replacing the Powertrain Control Module (PCM)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P20E5 Code?<\/h2>\n<p>The cost to fix the P20E5 code can vary significantly based on the specific repairs needed. Generally, you can expect:<\/p>\n<ul>\n<li>EGT sensor replacement: $100 &#8211; $300<\/li>\n<li>Wiring repairs: $50 &#8211; $200<\/li>\n<li>PCM replacement or reprogramming: $500 &#8211; $1500<\/li>\n<\/ul>\n<h2>Can I Fix the P20E5 Code Myself?<\/h2>\n<p>While some basic troubleshooting and repairs, like inspecting wiring, can be done by a DIY enthusiast, it is recommended to consult a professional mechanic for accurate diagnosis and repairs, especially when it comes to electronic components like the PCM and EGT sensors.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P20E5 OBD-II code indicates an issue with the Exhaust Gas Temperature Sensor 1\/2 correlation. This code is stored when the engine control module (PCM) detects an implausible signal from the exhaust gas temperature sensor. What Does the P20E5 Code Mean? The P20E5 code signifies a problem related to the exhaust gas temperature sensors used &hellip;<\/p>\n","protected":false},"author":26,"featured_media":88963,"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-79396","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 P20E5 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P20E5 code, what causes Exhaust Gas Temperature Sensor 1\/2 correlation issues, and how to diagnose and fix common problems 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\/p20e5-obd2-exhaust-gas-temperature-sensor-1-2-correlation\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P20E5 OBD2: Exhaust Gas Temperature Sensor 1\/2 Correlation\" \/>\n<meta property=\"og:description\" content=\"The P20E5 OBD-II code indicates an issue with the Exhaust Gas Temperature Sensor 1\/2 correlation. This code is stored when the engine control module (PCM)\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p20e5-obd2-exhaust-gas-temperature-sensor-1-2-correlation\" \/>\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=\"2025-06-18T18:00:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation.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\" 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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\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p20e5-obd2-exhaust-gas-temperature-sensor-12-correlation-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 P20E5 OBD-II code indicates an issue with the Exhaust Gas Temperature Sensor 1\/2 correlation. This code is stored when the engine control module (PCM) detects an implausible signal from the exhaust gas temperature sensor. What Does the P20E5 Code Mean? The P20E5 code signifies a problem related to the exhaust gas temperature sensors used&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79396","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=79396"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79396\/revisions"}],"predecessor-version":[{"id":86095,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79396\/revisions\/86095"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/88963"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79396"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79396"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79396"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}