{"id":77201,"date":"2025-09-13T16:03:11","date_gmt":"2025-09-13T21:03:11","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77201"},"modified":"2025-09-13T16:03:11","modified_gmt":"2025-09-13T21:03:11","slug":"p0073-obd2-ambient-air-temperature-sensor-circuit-high","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0073-obd2-ambient-air-temperature-sensor-circuit-high","title":{"rendered":"P0073 OBD2: Ambient Air Temperature Sensor Circuit High"},"content":{"rendered":"<p>OBD-II Code P0073 is defined as an Ambient Air Temperature Sensor Circuit High. This code indicates an issue with the ambient air temperature sensor circuit that monitors the temperature of the air entering the engine.<\/p>\n<h2>What Does the P0073 Code Mean?<\/h2>\n<p>The ambient temperature sensor plays a crucial role in helping the engine control module (PCM) determine the optimal fuel mixture during startup. If the PCM detects a fault in the signal from this sensor, it triggers the P0073 code.<\/p>\n<h2>What Causes the P0073 Code?<\/h2>\n<p>Several factors can lead to the activation of the P0073 code, including:<\/p>\n<ul>\n<li>Ambient air temperature sensor failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues related to the sensor<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0073 Code?<\/h2>\n<p>The most common symptom associated with the P0073 code is:<\/p>\n<ul>\n<li>Hard engine start<\/li>\n<\/ul>\n<h2>How Serious Is the P0073 Code?<\/h2>\n<p>The severity of the P0073 code is classified as moderate. While it may not pose an immediate threat to the vehicle&#8217;s safety or functionality, it is essential to have it diagnosed promptly to prevent further complications and ensure optimal performance.<\/p>\n<h2>How to Diagnose the P0073 Code<\/h2>\n<p>To accurately diagnose the P0073 code, the following steps should be taken:<\/p>\n<ol>\n<li>Use an OBD-II scanner to verify the code and check for any additional codes.<\/li>\n<li>Inspect the ambient air temperature sensor and its wiring for any visible damage.<\/li>\n<li>Test the sensor&#8217;s resistance and compare it to manufacturer specifications.<\/li>\n<li>Check the PCM for proper functioning and any software updates.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0073 Code<\/h2>\n<p>Repairs for the P0073 code may include:<\/p>\n<ul>\n<li>Replacing the ambient air temperature sensor<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Reprogramming or replacing the PCM if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0073 Code?<\/h2>\n<p>The cost to fix the P0073 code can vary significantly depending on the specific repair needed. On average, you can expect to pay between $100 and $300, which includes parts and labor.<\/p>\n<h2>Can I Fix the P0073 Code Myself?<\/h2>\n<p>While some individuals with automotive knowledge may be able to diagnose and fix the P0073 code themselves, it is generally recommended to seek the assistance of a professional mechanic. Proper tools and expertise are often necessary to ensure a correct diagnosis and repair.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>OBD-II Code P0073 is defined as an Ambient Air Temperature Sensor Circuit High. This code indicates an issue with the ambient air temperature sensor circuit that monitors the temperature of the air entering the engine. What Does the P0073 Code Mean? The ambient temperature sensor plays a crucial role in helping the engine control module &hellip;<\/p>\n","protected":false},"author":26,"featured_media":96048,"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-77201","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 P0073 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0073 code, what causes ambient air temperature sensor 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\/p0073-obd2-ambient-air-temperature-sensor-circuit-high\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0073 OBD2: Ambient Air Temperature Sensor Circuit High\" \/>\n<meta property=\"og:description\" content=\"OBD-II Code P0073 is defined as an Ambient Air Temperature Sensor Circuit High. This code indicates an issue with the ambient air temperature sensor\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0073-obd2-ambient-air-temperature-sensor-circuit-high\" \/>\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=\"2025-09-13T21:03:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/09\/p0073-obd2-ambient-air-temperature-sensor-circuit-high.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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This code indicates an issue with the ambient air temperature sensor circuit that monitors the temperature of the air entering the engine. What Does the P0073 Code Mean? The ambient temperature sensor plays a crucial role in helping the engine control module&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77201","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=77201"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77201\/revisions"}],"predecessor-version":[{"id":83900,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77201\/revisions\/83900"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/96048"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}