{"id":64589,"date":"2022-01-11T22:18:31","date_gmt":"2022-01-12T06:18:31","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=64589"},"modified":"2024-08-19T23:53:54","modified_gmt":"2024-08-20T06:53:54","slug":"p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/","title":{"rendered":"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2)"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column64589_8d389a-1f > .kt-inside-inner-col,.kadence-column64589_8d389a-1f > .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-column64589_8d389a-1f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column64589_8d389a-1f > .kt-inside-inner-col{flex-direction:column;}.kadence-column64589_8d389a-1f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column64589_8d389a-1f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column64589_8d389a-1f{position:relative;}@media all and (max-width: 1024px){.kadence-column64589_8d389a-1f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column64589_8d389a-1f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column64589_8d389a-1f inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-40e186  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-5f7f17\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading64589_527c1c-60, .wp-block-kadence-advancedheading.kt-adv-heading64589_527c1c-60[data-kb-block=\"kb-adv-heading64589_527c1c-60\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading64589_527c1c-60 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading64589_527c1c-60[data-kb-block=\"kb-adv-heading64589_527c1c-60\"] 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-heading64589_527c1c-60 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading64589_527c1c-60[data-kb-block=\"kb-adv-heading64589_527c1c-60\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading64589_527c1c-60 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading64589_527c1c-60\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The Diagnostic Trouble Code (DTC) P2272 indicates &ldquo;Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2).&rdquo;<\/li>\n\n\n\n<li>Code P2272 is registered when the PCM detects low voltage from the oxygen sensor, which indicates that the engine is running an excessively lean mixture.<\/li>\n\n\n\n<li>Code P2272 can be caused by a vacuum leak, fuel delivery issues, exhaust leaks, a faulty PCM, or faulty oxygen or mass air flow sensors.<\/li>\n\n\n\n<li>Common symptoms of the P2272 code include an illuminated check engine light, poor engine performance, and higher fuel consumption.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Oxygen sensors measure how much oxygen remains in the exhaust gases expelled by the engine into the exhaust system. Their readings are sent to the powertrain control module (PCM), which uses the data to adjust the amount of fuel sprayed into the engine.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a> notices that the voltage signals from an oxygen sensor are not shifting as they should, its diagnostics will log a P2272 code.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P2272 Code Mean?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The <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) P2272 indicates &ldquo;Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2).&rdquo;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oxygen sensors emit a voltage signal that changes according to the amount of oxygen in the engine&rsquo;s exhaust gases. Rich exhaust with low oxygen levels causes the voltage to rise as high as 1,000 millivolts (mV). Conversely, lean exhaust rich in air lowers the voltage to a minimum of 10 mV. At least 10 of these voltage signals are emitted every second.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-1024x602.jpg\" alt=\"O2 Sensor Downstream\" class=\"wp-image-64591\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/Car-Part-O2-Sensor-Downstream.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\"> Oxygen sensors emit a voltage signal that changes according to the amount of oxygen in the engine&rsquo;s exhaust gases.<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The PCM provides a baseline voltage of 450 mV, roughly in the middle of the oxygen sensor&rsquo;s high and low signal circuits. It also takes samples of the sensors&rsquo; voltage signals and compares them to the information stored in its memory. The computer checks how long the voltage stays out of the correct range and counts how many samples go too far.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If most of the voltage samples are much lower than the expected operating range, the PCM will set the powertrain code P2272.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For more technical information that can help you better understand P2272, especially if you&rsquo;re planning to diagnose or fix it yourself, read our note about <a href=\"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#A_Note_About_O2_Sensors_Rich_Lean_Conditions_and_Fuel_Trims\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"O2 sensors, rich \/ lean conditions, and fuel trims\">O2 sensors, rich \/ lean conditions, and fuel trims<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>Note:<\/strong> The definition of code P2272 may differ according to the vehicle manufacturer. Check 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 P2272 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A faulty sensor (<a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oxygen sensor\">oxygen sensor<\/a>, <a href=\"https:\/\/www.carparts.com\/mass-air-flow-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"mass airflow sensor\">mass airflow sensor<\/a>, etc.)<\/li>\n\n\n\n<li>Vacuum leak<\/li>\n\n\n\n<li>Fuel delivery issues<\/li>\n\n\n\n<li>Exhaust leak<\/li>\n\n\n\n<li>Issue with the PCM, such as software in need of an update<\/li>\n<\/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 P2272 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<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>\n\n\n\n<li>Engine performs poorly<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/15-fuel-economy-hacks-that-can-save-you-money-at-the-pump\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Higher fuel consumption\">Higher fuel consumption<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2272 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A DTC P2188 is a generic powertrain code that may be logged in vehicles from different auto manufacturers. Vehicles can share apparently similar triggers and symptoms. However, the steps for diagnosis and repair can differ between various makes and models.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you&rsquo;re not confident about conducting diagnostic tests on your vehicle, it&rsquo;s a good idea to bring it to a professional mechanic. Otherwise, you may go ahead and diagnose the issue yourself. To help you get started, here is&nbsp; a video that may give you an idea of what the process might involve:<\/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=\"2010 GMC Sierra 4.8 P2272\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/vN5wbRuwrZo?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 P2272 Code<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Attempting to fix a P2272 code may become a frustrating task if you don&rsquo;t have the right tools and know-how to test the oxygen sensor. In most cases, it&rsquo;s best to leave the job to professionals.<br>For DIYers with advanced technical knowledge and hands-on experience who prefer to do the job on their own, it will be helpful to rely on the appropriate <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"repair manual or refer to an online repair database\">repair manual or refer to an online repair database<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">A Note About O2 Sensors, Rich \/ Lean Conditions, and Fuel Trims<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O2 sensors detect oxygen, not fuel, so a misfiring cylinder will send unburned fuel and air through the exhaust, but all the O2 sensor will detect is the oxygen. It has no way to detect hydrocarbons or nitrogen. That being said, the O2 sensor&rsquo;s input to the PCM will drive the fuel trims in the direction of adding more fuel due to the perceived lean condition. And it happens very rapidly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&ldquo;Lean&rdquo; means an imbalance that the O2 sensor perceives as out of balance, with 14.7:1 being the target. That&rsquo;s 14.7 parts air (by weight) to 1 part fuel (by weight), which is how engineers measure fuel and air in this context. By volume, an engine uses 9,000 gallons of air for every one gallon of fuel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Conventional O2 sensors switch back and forth above and below .45-.50 volts, with voltages higher than the .45-.50 volt threshold indicating rich (too little air) and voltage below the .45-.50 volt threshold indicating lean (too much air).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"399\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph-1024x399.jpg\" alt=\"p2272 code graph\" class=\"wp-image-79911\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph-1024x399.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph-300x117.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph-768x300.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph-150x59.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/p2272-code-graph.jpg 1274w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Notice the blue trace in this screen print and how it switches rapidly from near zero to nearly 0.8 volts. This sensor is mildly biased lean, but not enough to cause a problem. The normal accepted range for a conventional zirconia sensor is from 0.2 to 0.8 volt switching.<br><br>The green trace is long term fuel trim (LTFT) and the purple trace is short term fuel trim (STFT). Notice how rapidly STFT reacts to the O2 sensor&rsquo;s switching. Long term fuel trim will typically only react rapidly in response to changing load conditions or rapid throttle response.<br><br>The yellow trace in the screen print is the downstream O2 sensor behind the warmup catalyst on bank 1. Notice how lazy that sensor is compared to the upstream sensor.<br><br>What most mechanics don&rsquo;t even know is that the downstream sensor will become the primary input for closed loop fuel calculations if the PCM\/ECM detects that the upstream O2 sensor becomes biased. And a code will be stored. | Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Oxygen sensors measure how much oxygen remains in the exhaust gases expelled by the engine into the exhaust system. Their&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":64590,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":true,"_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":[2607,2985],"class_list":["post-64589","post","type-post","status-publish","format-standard","has-post-thumbnail","category-obd-ii-trouble-codes","tag-oxygen-sensor-2","entry"],"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. 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\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. Read on for more information.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/\" \/>\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=\"2022-01-12T06:18:31+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-08-20T06:53:54+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\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=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/thecpteam\\\/\",\"sameAs\":\"https:\\\/\\\/www.facebook.com\\\/carpartscom, https:\\\/\\\/twitter.com\\\/CarPartscom, https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/, https:\\\/\\\/www.instagram.com\\\/carpartscom\\\/\"},{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"Richard McCuistian\",\"jobTitle\":\"ASE Master Automobile Technician\",\"description\":\"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/richardmccuistian\\\/\",\"sameAs\":\"https:\\\/\\\/www.linkedin.com\\\/in\\\/richard-mccuistian-2681891b\\\/, https:\\\/\\\/www.youtube.com\\\/user\\\/McCuistian\"}],\"headline\":\"P2272 Code: Oxygen Sensor Signal Biased\\\/Stuck Lean (Bank 2 Sensor 2)\",\"datePublished\":\"2022-01-12T06:18:31+00:00\",\"dateModified\":\"2024-08-20T06:53:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\"},\"wordCount\":994,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/oxygen-sensor-inspection-under-car.jpg\",\"keywords\":[\"oxygen-sensor\"],\"articleSection\":[\"OBD-II Trouble Codes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\",\"name\":\"P2272 Code: Oxygen Sensor Signal Biased\\\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/oxygen-sensor-inspection-under-car.jpg\",\"datePublished\":\"2022-01-12T06:18:31+00:00\",\"dateModified\":\"2024-08-20T06:53:54+00:00\",\"description\":\"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. Read on for more information.\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/oxygen-sensor-inspection-under-car.jpg\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/12\\\/oxygen-sensor-inspection-under-car.jpg\",\"width\":1500,\"height\":1000,\"caption\":\"oxygen sensor inspection under car\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"name\":\"In The Garage with CarParts.com\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\",\"name\":\"CarParts.com\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"width\":2048,\"height\":398,\"caption\":\"CarParts.com\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/carpartscom\",\"https:\\\/\\\/x.com\\\/carpartscom\",\"https:\\\/\\\/www.instagram.com\\\/carpartscom\",\"https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/\"]},{\"@type\":\"Person\",\"@id\":\"\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com","description":"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. Read on for more information.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/","og_locale":"en_US","og_type":"article","og_title":"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com","og_description":"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. Read on for more information.","og_url":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/","og_site_name":"In The Garage with CarParts.com","article_publisher":"https:\/\/www.facebook.com\/carpartscom","article_published_time":"2022-01-12T06:18:31+00:00","article_modified_time":"2024-08-20T06:53:54+00:00","og_image":[{"width":1500,"height":1000,"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_creator":"@carpartscom","twitter_site":"@carpartscom","twitter_misc":{"Written by":"","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#article","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/"},"author":[{"@type":"Person","$id":"4","name":"CarParts.com Research Team","jobTitle":"Expert Automotive Writer","description":"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/thecpteam\/","sameAs":"https:\/\/www.facebook.com\/carpartscom, https:\/\/twitter.com\/CarPartscom, https:\/\/www.youtube.com\/@CarPartscomOfficial\/, https:\/\/www.instagram.com\/carpartscom\/"},{"@type":"Person","$id":"4","name":"Richard McCuistian","jobTitle":"ASE Master Automobile Technician","description":"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/","sameAs":"https:\/\/www.linkedin.com\/in\/richard-mccuistian-2681891b\/, https:\/\/www.youtube.com\/user\/McCuistian"}],"headline":"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2)","datePublished":"2022-01-12T06:18:31+00:00","dateModified":"2024-08-20T06:53:54+00:00","mainEntityOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/"},"wordCount":994,"commentCount":0,"publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","keywords":["oxygen-sensor"],"articleSection":["OBD-II Trouble Codes"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/","url":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/","name":"P2272 Code: Oxygen Sensor Signal Biased\/Stuck Lean (Bank 2 Sensor 2) - In The Garage with CarParts.com","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#primaryimage"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","datePublished":"2022-01-12T06:18:31+00:00","dateModified":"2024-08-20T06:53:54+00:00","description":"Learn what the P2272 code means, its possible causes, and the common symptoms associated with it. Read on for more information.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/#primaryimage","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","width":1500,"height":1000,"caption":"oxygen sensor inspection under car"},{"@type":"WebSite","@id":"https:\/\/www.carparts.com\/blog\/#website","url":"https:\/\/www.carparts.com\/blog\/","name":"In The Garage with CarParts.com","description":"","publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.carparts.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.carparts.com\/blog\/#organization","name":"CarParts.com","url":"https:\/\/www.carparts.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","width":2048,"height":398,"caption":"CarParts.com"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/carpartscom","https:\/\/x.com\/carpartscom","https:\/\/www.instagram.com\/carpartscom","https:\/\/www.youtube.com\/@CarPartscomOfficial\/"]},{"@type":"Person","@id":"","url":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/"}]}},"featured_image_src":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","featured_image_src_square":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/12\/oxygen-sensor-inspection-under-car.jpg","author_info":{"display_name":"","author_link":"https:\/\/www.carparts.com\/blog\/p2272-code-oxygen-sensor-signal-biased-stuck-lean-bank-2-sensor-2\/"},"authors":[{"term_id":2607,"user_id":1651,"is_guest":0,"slug":"thecpteam","display_name":"CarParts.com Research Team","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg"},"author_category":"","user_url":"https:\/\/www.carparts.com\/blog\/author\/thecpteam\/","last_name":"","first_name":"CarParts.com Research Team","job_title":"","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. Guided by CarParts.com's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust."},{"term_id":2985,"user_id":1646,"is_guest":0,"slug":"richardmccuistian","display_name":"Richard McCuistian, ASE Certified Master Automobile Technician","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png"},"author_category":"","user_url":"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/","last_name":"McCuistian","first_name":"Richard","job_title":"ASE Certified Master Automobile Technician","description":"<div class=\"auth-social-links\"><a href=\"https:\/\/www.linkedin.com\/in\/richard-mccuistian-2681891b\/\" class=\"btn\" rel=\"nofollow noopener\" target=\"_blank\" aria-label=\"linkedin\" aria-labelledby=\"linkedin\">LinkedIn<\/a><a href=\"https:\/\/www.youtube.com\/user\/McCuistian\" class=\"btn\" rel=\"nofollow noopener\" target=\"_blank\" aria-label=\"instagram\" aria-labelledby=\"instagram\">Youtube<\/a><\/div>\r\n\r\nRichard McCuistian grew up in Alabama learning from his father who ran an automotive repair shop. Richard has worked for nearly 50 years in the automotive field as a professional technician, an instructor, a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others (published every year since May 2000). He has developed training courses and written or edited training material for companies in the U.S. Canada, and the Netherlands, and even Bulgaria. He maintained an \u201cask a mechanic\u201d website for 10 years answering questions emailed to him from all over the world.\r\n\r\nRichard has an instructional automotive YouTube channel \u201cMcCuistian\u201d with 13,500 subscribers and over 1,300 videos. Much of his professional work requires photography and videography in shop environments, but Richard also enjoys taking pictures of landscapes, skyscapes, old barns and houses, small towns. He has produced a coffee table book of digital watercolors called \u201cMemories of South Alabama\u201d created from his personal photos, along with a dozen Christian fiction short original novels and a collection of short stories, all available in Kindle or softcover format. Richard has written a 2,500-word Bible study every week for the past 20 years and uses it to teach a small group at his church every Sunday morning.\r\n\r\n<strong>Credentials:<\/strong>\r\n\r\n<ul class=\"author-list\">\r\n<li><p>ASE Certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.<\/p><\/li>\r\n<li><p>Professional Mechanic\/Technician for 25 years with experience on diesel and gasoline engines, vehicles and equipment (including hydraulics).<\/p><\/li>\r\n<li><p>Spent 5 years in fleet maintenance, 20 years in independent shops and dealerships (VW, Mazda, Renault, Jeep, Ford, Lincoln), specializing in driveability and electronics for the last 14 years of his career at the same dealership.<\/p><\/li>\r\n<li><p>Senior Contributing Editor at Motor Age Magazine, first published in Motor Age in May of 2000 and every year since. He has won two International Automotive Media Awards for technical articles published in trade magazines.<\/p><\/li>\r\n<li><p>Has attended hundreds of hours of automotive training from OEMs including GM, Volkswagen, Mazda, Renault, Jeep, Chrysler, as well as additional training at events like KC Vision and MACS (Mobile Air Climate Systems Association).<\/p><\/li>\r\n<li><p>Taught college level auto mechanics for 19 years.<\/p><\/li>\r\n<li><p>Has written for automotive training companies (including course development work for training companies in Canada and the Netherlands) and has been hired to teach professional trade show technician courses at multiple training events in Texas and Alabama.<\/p><\/li>\r\n<li><p>While still teaching at the college level, Richard launched a new automotive program in Geneva, Alabama, setting up a dual enrollment department in a new building, organizing the shop and classroom, teaching morning classes to high school students for 2 years while still teaching at the college in the afternoon.<\/p><\/li>\r\n<li><p>Richard\u2019s college program at Lurleen B. Wallace Community College worked at professional shop speed during his tenure to prepare graduates for production level work in the real world.<\/p><\/li>\r\n<\/ul>"}],"_links":{"self":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/64589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/comments?post=64589"}],"version-history":[{"count":0,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/64589\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media\/64590"}],"wp:attachment":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media?parent=64589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/categories?post=64589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/tags?post=64589"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=64589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}