{"id":75611,"date":"2022-10-16T15:55:36","date_gmt":"2022-10-16T22:55:36","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=75611"},"modified":"2023-09-11T22:08:41","modified_gmt":"2023-09-12T05:08:41","slug":"p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\/","title":{"rendered":"P2240 Code: O2 Sensor Positive Current Control Circuit\/Open Bank 2 Sensor 1"},"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_09bd88-c0 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_09bd88-c0 > .kt-inside-inner-col,.kadence-column_09bd88-c0 > .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_09bd88-c0 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_09bd88-c0 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_09bd88-c0 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_09bd88-c0 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_09bd88-c0{position:relative;}@media all and (max-width: 1024px){.kadence-column_09bd88-c0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_09bd88-c0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_09bd88-c0 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-d08959  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-75495d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_6aba2d-c0, .wp-block-kadence-advancedheading.kt-adv-heading_6aba2d-c0[data-kb-block=\"kb-adv-heading_6aba2d-c0\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_6aba2d-c0 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_6aba2d-c0[data-kb-block=\"kb-adv-heading_6aba2d-c0\"] 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_6aba2d-c0 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_6aba2d-c0[data-kb-block=\"kb-adv-heading_6aba2d-c0\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_6aba2d-c0 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_6aba2d-c0\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P2240 code stands for &ldquo;O2 Sensor Positive Current Control Circuit\/Open Bank 2 Sensor 1.&rdquo;<\/li><li>Some possible causes include a faulty O2 sensor, exhaust leaks, and wiring issues.<\/li><li>A few symptoms to look out for are an illuminated check engine light, excessive fuel consumption, and decreased engine performance.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) uses the <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oxygen (O2) sensor\">oxygen (O2) sensor<\/a> to detect the concentration in the exhaust gas. Together with the engine coolant temperature (ECT) and <a href=\"https:\/\/www.carparts.com\/throttle-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle position (TP) sensors\">throttle position (TP) sensors<\/a>, the O2 sensor helps the PCM determine the right amount of air-fuel mixture for optimum engine operation. If the PCM is unable to detect a signal from the O2 sensor, a P2240 trouble code will be logged by on-board diagnostics (OBD).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2240 Code Mean?<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Diagnostic trouble code\">Diagnostic trouble code<\/a> (DTC) P2240 stands for &ldquo;O2 Sensor Positive Current Control Circuit\/Open Bank 2 Sensor 1.&rdquo;<\/p>\n\n\n\n<p>The O2 sensor is a thimble-like device located in the exhaust stream near the catalytic converter (usually on the exhaust manifold or exhaust pipe).<\/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\/car-oxygen-sensor-mounted-on-the-exhaust-system-1024x683.jpg\" alt=\"car oxygen sensor mounted on the exhaust system\" class=\"wp-image-75618\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-1536x1025.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/car-oxygen-sensor-mounted-on-the-exhaust-system-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The O2 sensor is a thimble-like device located in the exhaust stream near the catalytic converter.<\/figcaption><\/figure>\n\n\n\n<p>The sensor sends a signal to the PCM, which is calculated by measuring the differences between the oxygen content of the surrounding air and the oxygen content of the exhaust. Feedback is then sent to the engine computer, which lets it keep the air-fuel mixture close to the stoichiometric mixture as much as possible.<\/p>\n\n\n\n<p>An open-loop operation in the engine occurs when the PCM is calculating the air-fuel mixture without the help of the O2 sensor. This can lead to an overly rich or lean mixture and affect engine performance.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of <\/em><em>code P2240 <\/em><em>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 P2240 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li><a href=\"https:\/\/www.carparts.com\/blog\/bad-o2-sensor-symptoms-causes-replacement-cost\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty O2 sensor\">Faulty O2 sensor<\/a><\/li><li>Exhaust leaks<\/li><li>Wiring issues<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM failure\">PCM failure<\/a><\/li><\/ul>\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<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P2240 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>Excessive fuel consumption<\/li><li>Decreased engine performance<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2240 Code<\/h2>\n\n\n\n<p>DTC P2240 can be logged in vehicles with an OBD-II system. However, keep in mind that the steps for diagnosing this code can vary depending on vehicle specifications. Diagnosing this code might require you to use a scan tool and multimeter, which can be confusing if you&rsquo;re not well-versed in automotive repair. Under these circumstances, it&rsquo;s best to leave the job to the pros.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2240 Code<\/h2>\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\/man-troubleshooting-obd-code-1024x681.jpg\" alt=\"man troubleshooting obd code\" class=\"wp-image-75619\" width=\"1024\" height=\"681\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-1024x681.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-768x511.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-1536x1022.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/man-troubleshooting-obd-code-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>If you think you can&rsquo;t handle the task on your own, it&rsquo;s best to seek the help of a trained professional to get the job done.<\/figcaption><\/figure>\n\n\n\n<p>It can be confusing to resolve a P2240 code on your own if you lack the necessary DIY skills and technical knowledge to do so. If you think you can&rsquo;t handle the task on your own, it&rsquo;s best to seek the help of a trained professional to get the job done. This will also ensure that all steps and protocols are followed correctly.<\/p>\n\n\n\n<p>But if you&rsquo;ve had your fair share of resolving trouble codes on your own, then you already know that there&rsquo;s not one manual that will work for every make and model. Before you begin, make sure you&rsquo;re equipped with the right tools and vehicle-specific repair information like those from Chilton or an ALLDATA subscription.<\/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 powertrain control module (PCM) uses the oxygen (O2) sensor to detect the concentration in the exhaust gas. Together with&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":75620,"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":[1323,1190,1679],"ppma_author":[2607,2855],"class_list":{"0":"post-75611","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","9":"tag-oxygen-sensor-2","10":"tag-throttle-position-sensor","11":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2240 Code: O2 Sensor Positive Current Control Circuit\/Open Bank 2 Sensor 1 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn more about the P2240 code and the most common causes that could trigger it.\" \/>\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\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2240 Code: O2 Sensor Positive Current Control Circuit\/Open Bank 2 Sensor 1 - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn more about the P2240 code and the most common causes that could trigger it.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\/\" \/>\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=\"2022-10-16T22:55:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-12T05:08:41+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/10\/disconnected-oxygen-sensor-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1366\" \/>\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=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2240-code-o2-sensor-positive-current-control-circuit-open-bank-2-sensor-1\\\/\"},\"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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