{"id":75402,"date":"2022-10-18T03:37:35","date_gmt":"2022-10-18T10:37:35","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=75402"},"modified":"2023-09-11T21:40:23","modified_gmt":"2023-09-12T04:40:23","slug":"p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\/","title":{"rendered":"P2073 Code: Manifold Absolute Pressure\/Mass Air Flow &#8211; Throttle Position Correlation at Idle"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_1657b7-41 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_1657b7-41 > .kt-inside-inner-col,.kadence-column_1657b7-41 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column_1657b7-41 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_1657b7-41 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_1657b7-41 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_1657b7-41 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_1657b7-41{position:relative;}@media all and (max-width: 1024px){.kadence-column_1657b7-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_1657b7-41 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_1657b7-41 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-6ad189  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-1d3f57\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45, .wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45[data-kb-block=\"kb-adv-heading_4877d8-45\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45[data-kb-block=\"kb-adv-heading_4877d8-45\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_4877d8-45[data-kb-block=\"kb-adv-heading_4877d8-45\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_4877d8-45 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_4877d8-45\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The PCM will record a P2073 code on a scan tool if the MAP\/MAF reading doesn&rsquo;t match the calculated throttle position.<\/li><li>Some of the possible causes of a P2073 code include a failed MAF or MAP sensor, an air intake leak, a wiring issue, a failed air cooler assembly, and an EGR system problem.<\/li><li>The common symptoms of a P2073 code include poor fuel economy and reduced engine performance.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">The <a href=\"https:\/\/www.carparts.com\/map-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"manifold absolute pressure (MAP) sensor\">manifold absolute pressure (MAP) sensor<\/a> is used by the powertrain control module (PCM) to determine engine load in a vehicle. On some vehicles, the PCM also uses a <a href=\"https:\/\/www.carparts.com\/mass-air-flow-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"mass air flow (MAF) sensor\">mass air flow (MAF) sensor<\/a> to measure the amount of the air entering the engine and determine how much fuel is needed. As air flow and intake manifold pressure change, so does the throttle position. If the MAP\/MAF reading doesn&rsquo;t match the calculated throttle position, the vehicle&rsquo;s computer will log a P2073 code on a scan tool.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2073 Code Mean?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Diagnostic trouble code (DTC) P2073 stands for &ldquo;Manifold Absolute Pressure\/Mass Air Flow &ndash; Throttle Position Correlation at Idle.&rdquo; This generic powertrain code can apply to modern vehicles with OBD-II.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1-1024x614.jpg\" alt=\"map and maf sensors image\" class=\"wp-image-75833\" width=\"1024\" height=\"614\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1-1024x614.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1-300x180.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1-768x461.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1-150x90.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/map-and-maf-sensors-1.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Once the MAP\/MAF reading doesn&rsquo;t match the calculated throttle position, the vehicle&rsquo;s computer will log a P2073 code on a scan tool.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">An internal combustion engine needs a calculated mixture of air and fuel to move the pistons up and down through its various cycles. As the piston moves down on an intake stroke, air flows into the engine to fill the low-pressure area in the cylinder. This low pressure in the engine is called vacuum.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the engine decelerates or idles, the manifold pressure drops below atmospheric temperature, which creates a vacuum. The PCM must compensate for changes in oxygen and barometric pressure by adjusting the flow of fuel entering the engine. A fuel-injected system uses a MAP sensor to provide the PCM with information on manifold pressure. As the air pressure in the engine rises, the MAP sensor generates a higher voltage or signal frequency signal to the PCM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The MAF sensor measures the amount of air entering the engine and then converts the air flow into a frequency output that the PCM can read. This sensor accounts for relative humidity, altitude, and temperature of the air in the engine. The PCM will record a P2073 code on a scan tool if the MAP\/MAF reading doesn&rsquo;t match the calculated throttle position.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Note:<\/em><\/strong><em> The definition of code P2073 might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P2073 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/symptoms-of-failing-mass-air-flow-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty MAF sensor\">Faulty MAF sensor<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/how-to-check-if-your-map-sensor-is-bad\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Failed MAP sensor\">Failed MAP sensor<\/a><\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Wiring\">Wiring<\/a> issue<\/li><li>Air intake leak<\/li><li>An issue with the exhaust gas recirculation (EGR) system<\/li><li>Damaged air cooler assembly<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-1024x683.jpg\" alt=\"components of a car air cooler assembly\" class=\"wp-image-75834\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-air-cooler-assembly.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>One common cause of the code P2073 is a damaged air cooler assembly.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2073 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Illuminated check engine light\">Illuminated check engine light<\/a><\/li><li>Diminished engine performance<\/li><li>Poor fuel economy<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2073 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A P2073 code might be accompanied by other <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"DTCs\">DTCs<\/a> that are related to the MAP or MAF sensor, so you might observe some symptoms not listed in this article. Diagnostic steps can vary depending on your vehicle&rsquo;s make and model. What might work to resolve a P2073 code for a <a href=\"https:\/\/www.carparts.com\/ford\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Ford\">Ford<\/a> might not work for a <a href=\"https:\/\/www.carparts.com\/chevrolet\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Chevy\">Chevy<\/a>. You should <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"review your vehicle&rsquo;s repair manual\">review your vehicle&rsquo;s repair manual<\/a> before attempting to diagnose this DTC. An incorrect diagnosis can lead to costly repairs down the line.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">However, if you aren&rsquo;t confident in diagnosing your vehicle, you should leave this part to a mechanic. They can save you from the hassle of doing the repairs yourself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2073 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There&rsquo;s no one way to address a P2073 code. You might have a faulty MAF sensor, a wiring issue, or a combination of problems. If you want to figure out the right fix for your particular case, you&rsquo;ll have to identify the root causes of your DTC. Luckily, there are plenty of OBD-II <a href=\"https:\/\/www.carparts.com\/blog\/best-online-resources-to-help-you-learn-how-to-fix-cars\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"resources online\">resources online<\/a> to help you get started on your DIY journey. We recommend looking for technical service bulletins to save time on research. You can get a Chilton repair manual for reference but an ALLDATA single-vehicle subscription is better because it contains comprehensive factory repair information for your vehicle.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>The manifold absolute pressure (MAP) sensor is used by the powertrain control module (PCM) to determine engine load in a&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":75671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1355,1462],"ppma_author":[2607,2855],"class_list":["post-75402","post","type-post","status-publish","format-standard","has-post-thumbnail","category-obd-ii-trouble-codes","tag-map-sensor-2","tag-mass-air-flow-sensor-2","entry"],"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2073 Code: Manifold Absolute Pressure\/Mass Air Flow - Throttle Position Correlation at Idle - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out how to clear a P2073 diagnostic trouble code by learning what causes it to get logged in this article.\" \/>\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.carparts.com\/blog\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2073 Code: Manifold Absolute Pressure\/Mass Air Flow - Throttle Position Correlation at Idle - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out how to clear a P2073 diagnostic trouble code by learning what causes it to get logged in this article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-18T10:37:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-12T04:40:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/scan-tool-for-obd-code.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"998\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2073-code-manifold-absolute-pressure-mass-air-flow-throttle-position-correlation-at-idle\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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