{"id":79569,"date":"2025-06-11T11:17:24","date_gmt":"2025-06-11T16:17:24","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79569"},"modified":"2025-06-11T11:24:41","modified_gmt":"2025-06-11T16:24:41","slug":"p2223-obd2-nox-sensor-heater-sense-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2223-obd2-nox-sensor-heater-sense-circuit-low","title":{"rendered":"P2223 OBD2: NOx Sensor Heater Sense Circuit Low"},"content":{"rendered":"<h2>What Does the P2223 Code Mean?<\/h2>\n<p>The P2223 code signals a low reading from the NOx sensor heater circuit. This typically means that the Powertrain Control Module (PCM) has detected a problem with the electrical circuit that powers the NOx sensor heater, which is essential for optimal sensor operation.<\/p>\n<h2>What Causes the P2223 Code?<\/h2>\n<p>Several factors can lead to the P2223 code being triggered, including:<\/p>\n<ul>\n<li>NOx sensor failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues related to the NOx sensor<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2223 Code?<\/h2>\n<p>When the P2223 code is present, you may notice the following symptoms:<\/p>\n<ul>\n<li>Illuminated check engine light<\/li>\n<li>Increased emissions<\/li>\n<li>Reduced engine performance<\/li>\n<\/ul>\n<h2>How Serious Is the P2223 Code?<\/h2>\n<p>The P2223 code is classified as a moderate severity issue. While it may not pose an immediate threat to your vehicle&#8217;s safety or functionality, it is essential to address it promptly to prevent further complications and maintain optimal vehicle performance.<\/p>\n<h2>How to Diagnose the P2223 Code<\/h2>\n<p>Diagnosing the P2223 code typically involves the following steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the code.<\/li>\n<li>Inspect the wiring and connectors associated with the NOx sensor.<\/li>\n<li>Test the NOx sensor functionality.<\/li>\n<li>Check the Powertrain Control Module for any faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P2223 Code<\/h2>\n<p>To resolve the P2223 code, mechanics may perform one or more of the following repairs:<\/p>\n<ul>\n<li>Replace the faulty NOx sensor<\/li>\n<li>Repair or replace damaged wiring<\/li>\n<li>Replace the Powertrain Control Module if defective<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2223 Code?<\/h2>\n<p>The cost to fix the P2223 code can vary significantly based on the specific issue. Typical repair costs can range from $100 to $800, depending on whether you need to replace the NOx sensor, repair wiring, or replace the PCM.<\/p>\n<h2>Can I Fix the P2223 Code Myself?<\/h2>\n<p>While some DIY enthusiasts may be able to diagnose and repair simple wiring issues or replace the NOx sensor, it is recommended to consult a professional mechanic for accurate diagnosis and repair to ensure the problem is resolved effectively.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P2223 Code Mean? The P2223 code signals a low reading from the NOx sensor heater circuit. This typically means that the Powertrain Control Module (PCM) has detected a problem with the electrical circuit that powers the NOx sensor heater, which is essential for optimal sensor operation. What Causes the P2223 Code? Several &hellip;<\/p>\n","protected":false},"author":26,"featured_media":88510,"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-79569","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 v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P2223 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2223 code, what causes NOx sensor heater sense 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\/p2223-obd2-nox-sensor-heater-sense-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2223 OBD2: NOx Sensor Heater Sense Circuit Low\" \/>\n<meta property=\"og:description\" content=\"What Does the P2223 Code Mean? The P2223 code signals a low reading from the NOx sensor heater circuit. This typically means that the Powertrain Control\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2223-obd2-nox-sensor-heater-sense-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:published_time\" content=\"2025-06-11T16:17:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-06-11T16:24:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-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 name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta 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He learned to write after spending over a decade doing it.","sameAs":["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\/p2223-obd2-nox-sensor-heater-sense-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2223-obd2-nox-sensor-heater-sense-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":"What Does the P2223 Code Mean? The P2223 code signals a low reading from the NOx sensor heater circuit. This typically means that the Powertrain Control Module (PCM) has detected a problem with the electrical circuit that powers the NOx sensor heater, which is essential for optimal sensor operation. What Causes the P2223 Code? Several&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79569","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=79569"}],"version-history":[{"count":2,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79569\/revisions"}],"predecessor-version":[{"id":88530,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79569\/revisions\/88530"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/88510"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}