{"id":71060,"date":"2022-08-09T22:36:34","date_gmt":"2022-08-10T05:36:34","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=71060"},"modified":"2023-09-04T18:06:07","modified_gmt":"2023-09-05T01:06:07","slug":"p2237-code-o2-sensor-positive-current-control-circuit-open-bank-1-sensor-1","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2237-code-o2-sensor-positive-current-control-circuit-open-bank-1-sensor-1\/","title":{"rendered":"P2237 Code: O2 Sensor Positive Current Control Circuit \/ Open Bank 1 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_2aa10d-1b > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_2aa10d-1b > .kt-inside-inner-col,.kadence-column_2aa10d-1b > .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_2aa10d-1b > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_2aa10d-1b > .kt-inside-inner-col{flex-direction:column;}.kadence-column_2aa10d-1b > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_2aa10d-1b > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_2aa10d-1b{position:relative;}@media all and (max-width: 1024px){.kadence-column_2aa10d-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_2aa10d-1b > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_2aa10d-1b qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-2b4ab3  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-29938d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_d74ea8-99, .wp-block-kadence-advancedheading.kt-adv-heading_d74ea8-99[data-kb-block=\"kb-adv-heading_d74ea8-99\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_d74ea8-99 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_d74ea8-99[data-kb-block=\"kb-adv-heading_d74ea8-99\"] 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_d74ea8-99 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_d74ea8-99[data-kb-block=\"kb-adv-heading_d74ea8-99\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_d74ea8-99 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_d74ea8-99\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P2237 is defined as &ldquo;O2 Sensor Positive Current Control Circuit\/Open Bank 1 Sensor 1.&rdquo; This code is triggered when the powertrain control module (PCM) detects inconsistent signals from the oxygen sensor in engine bank one.<\/li><li>Problems like a faulty oxygen sensor, exhaust leaks, wiring issues, or PCM failure can trigger the P2237 code.<\/li><li>Common symptoms of the P2237 code include reduced fuel efficiency, poor engine performance, and an illuminated check engine light.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Is your car&rsquo;s <a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check engine light on\">check engine light on<\/a>? Check your vehicle&rsquo;s onboard diagnostic (OBD) system using a scan tool to check for stored <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"trouble codes\">trouble codes<\/a>. If the scan tool shows the P2237 code, then this article will help you learn about its definition, common causes, and symptoms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2237 Code Mean?<\/h2>\n\n\n\n<p>The P2237 is defined as O2 Sensor Positive Current Control Circuit\/Open Bank 1 Sensor 1. This code is stored when the powertrain control module (PCM) detects inconsistent signals from the oxygen sensor in engine bank one. <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Oxygen sensors\">Oxygen sensors<\/a> are responsible for measuring the oxygen levels in the vehicle&rsquo;s exhaust gases, as they determine whether the engine is running lean or rich. The PCM needs data from the oxygen sensors to determine the <a href=\"https:\/\/www.carparts.com\/blog\/what-is-a-good-air-fuel-ratio-chart-included\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"air-fuel ratio\">air-fuel ratio<\/a>, among other important engine variables. As road conditions vary, engine variables need to change to maintain efficiency.<\/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\/07\/obd-2-code-diagnostic-tool-1024x683.jpg\" alt=\"checking obd 2 code using a diagnostic tool\" class=\"wp-image-71064\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/obd-2-code-diagnostic-tool.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The P2237 code is stored when the PCM detects inconsistent signals from the oxygen sensor in engine bank one.<\/figcaption><\/figure>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of the P2237 code can 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 P2237 Code?<\/h2>\n\n\n\n<p>These problems can trigger the P2237 code:<\/p>\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=\"Oxygen sensor failure\">Oxygen sensor failure<\/a><\/li><li>Exhaust leak<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Wiring issue\">Wiring issue<\/a><\/li><li>PCM failure<\/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 P2237 Code?<\/h2>\n\n\n\n<p>Issues that trigger the P2237 code can cause symptoms such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Reduced fuel efficiency<\/li><li>Poor engine performance<\/li><li>Illuminated check engine light<\/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\/07\/old-o2-sensor-1024x640.jpg\" alt=\"old oxygen sensor\" class=\"wp-image-71065\" width=\"1024\" height=\"640\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/old-o2-sensor-1024x640.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/old-o2-sensor-300x188.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/old-o2-sensor-768x480.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/old-o2-sensor-150x94.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/07\/old-o2-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>One of the main causes of P2237 is oxygen sensor failure.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2237 Code<\/h2>\n\n\n\n<p>The P2237 code can be caused by several issues. Depending on the symptoms, you might need to inspect or test some components to rule them out as the culprit. This can be difficult because you might need special knowledge or training to properly access and assess these parts. The best course of action is to leave the task to a properly trained mechanic.<\/p>\n\n\n\n<p>You can learn more about the diagnostic process by checking out the video below:<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"How to Diagnose and Replace O2 Sensor Lambda Probe on Audi A6 C7 P2237 S1 B1\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/NQEXdEoXhjQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2237 Code<\/h2>\n\n\n\n<p>Unfortunately, there isn&rsquo;t a single cure-all that can resolve the problems that trigger this OBD-II code for any vehicle. The repair procedure will vary depending on the faulty component and the vehicle model. The best course of action is to ask a certified mechanic for a proper diagnosis. Once the problem has been accurately identified, then you can consult various <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=\"auto repair resources and how-to guides available online\">auto repair resources and how-to guides available online<\/a> for possible solutions. Your vehicle <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"owner&rsquo;s manual\">owner&rsquo;s manual<\/a> can also help, as it might have troubleshooting guides. If you aren&rsquo;t confident about your automotive repair skills, it&rsquo;s best to consult a mechanic.<\/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>Is your car&rsquo;s check engine light on? Check your vehicle&rsquo;s onboard diagnostic (OBD) system using a scan tool to check&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2237-code-o2-sensor-positive-current-control-circuit-open-bank-1-sensor-1\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":71063,"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":[1190],"ppma_author":[2607,2855],"class_list":{"0":"post-71060","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-oxygen-sensor-2","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2237 Code: O2 Sensor Positive Current Control Circuit \/ Open Bank 1 Sensor 1 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn about the definition, common causes, and symptoms of the P2237 code in this article. Read on for more information.\" \/>\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\/p2237-code-o2-sensor-positive-current-control-circuit-open-bank-1-sensor-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2237 Code: O2 Sensor Positive Current Control Circuit \/ Open Bank 1 Sensor 1 - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn about the definition, common causes, and symptoms of the P2237 code in this article. 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