{"id":16627,"date":"2022-06-05T18:51:00","date_gmt":"2022-06-06T01:51:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=16627"},"modified":"2026-02-10T18:34:27","modified_gmt":"2026-02-11T02:34:27","slug":"p0051-code-ho2s-heater-control-circuit-low-bank-2-sensor-1","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0051-code-ho2s-heater-control-circuit-low-bank-2-sensor-1\/","title":{"rendered":"P0051 Code: HO2S Heater Control Circuit Low (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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column16627_fa57e0-22 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column16627_fa57e0-22 > .kt-inside-inner-col,.kadence-column16627_fa57e0-22 > .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-column16627_fa57e0-22 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column16627_fa57e0-22 > .kt-inside-inner-col{flex-direction:column;}.kadence-column16627_fa57e0-22 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column16627_fa57e0-22 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column16627_fa57e0-22{position:relative;}@media all and (max-width: 1024px){.kadence-column16627_fa57e0-22 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column16627_fa57e0-22 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column16627_fa57e0-22 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-ed3b5e  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-daf375\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading16627_316b6c-49, .wp-block-kadence-advancedheading.kt-adv-heading16627_316b6c-49[data-kb-block=\"kb-adv-heading16627_316b6c-49\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading16627_316b6c-49 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading16627_316b6c-49[data-kb-block=\"kb-adv-heading16627_316b6c-49\"] 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-heading16627_316b6c-49 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading16627_316b6c-49[data-kb-block=\"kb-adv-heading16627_316b6c-49\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading16627_316b6c-49 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading16627_316b6c-49\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P0051 code stands for &ldquo;HO2S Heater Control Circuit Low (Bank 2 Sensor 1).&rdquo;<\/li>\n\n\n\n<li>It&rsquo;s triggered when the PCM detects a potential issue with the heater circuit for the oxygen sensor #1 on Bank 2.<\/li>\n\n\n\n<li>Possible causes for this code to be set include a faulty O2 sensor, O2 sensor heater circuit issues, and a faulty PCM.<\/li>\n\n\n\n<li>Poor engine performance and excessive fuel consumption are some of the symptoms associated with this code.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>An <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"OBD-II code\">OBD-II code<\/a> is designed to inform you about the possible issues that your vehicle may have. For you to resolve it, you must first know what the code means. If you&rsquo;re having trouble figuring out what code P0051 means and how to clear it, this guide is for you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0051 Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P0051 stands for &ldquo;HO2S Heater Control Circuit Low (Bank 2 Sensor 1).&rdquo; This code is logged when 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) detects a potential issue with the heater circuit for the oxygen sensor #1 on Bank 2.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-1024x1024.jpg\" alt=\"heated oxygen sensor 3a 1\" class=\"wp-image-16631\" style=\"width:1024px;height:1024px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-1024x1024.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-300x300.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-768x768.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-75x75.jpg 75w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-600x600.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-928x928.jpg 928w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1-150x150.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/09\/heated-oxygen-sensor-3a-1.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The oxygen sensor measures the amount of oxygen present in the exhaust gas and compares it to the air outside.<\/figcaption><\/figure>\n\n\n\n<p>The oxygen sensor referred to in this trouble code is the oxygen sensor #1 that&rsquo;s located on Bank 2 in front of the catalytic converter. The side of the engine that does not contain cylinder #1 is called Bank 2.<\/p>\n\n\n\n<p>The oxygen sensor measures the amount of oxygen present in the exhaust gas and compares it to the air outside. This allows the vehicle&rsquo;s computer to make the necessary air-fuel ratio adjustments to keep the engine running right.<\/p>\n\n\n\n<p>For the oxygen sensor #1 to make an accurate reading, it has to be at a certain temperature. This is why it contains a heater wire which can bring its temperature up quickly when needed. When the PCM detects that the resistance of the heater circuit is lower than normal, it logs P0051.<\/p>\n\n\n\n<p>Depending on the severity, other related codes may also be stored with this DTC. Code P0051 is very similar to trouble codes <a href=\"https:\/\/www.carparts.com\/blog\/p0031-code-ho2s-heater-control-circuit-low-bank-1-sensor-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0031\">P0031<\/a>, <a href=\"https:\/\/www.carparts.com\/blog\/p0032-code-ho2s-heater-control-circuit-high-bank-1-sensor-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0032\">P0032<\/a>, and <a href=\"https:\/\/www.carparts.com\/blog\/p0052-code-ho2s-heater-circuit-high-bank-2-sensor-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"P0052\">P0052<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-1024x683.jpg\" alt=\"male mechanic performs a car diagnostic using obd tool\" class=\"wp-image-69769\" style=\"width:1024px;height:683px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/male-mechanic-performs-a-car-diagnostic-using-obd-tool-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Depending on the severity, other related codes may also be stored with this DTC.<\/figcaption><\/figure>\n\n\n\n<p>For more information that could help you resolve code P0051, read our discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\/#Why_Do_Oxygen_Sensors_Need_Heat\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"why oxygen sensors need heat\">why oxygen sensors need heat<\/a>. If you need help locating bank 2, read our guide about <a href=\"https:\/\/www.carparts.com\/blog\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\/#Bank_1_vs_Bank_2\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"where bank 1 and bank 2 are located\">where bank 1 and bank 2 are located<\/a>.<\/p>\n\n\n\n<p><strong><em>Note: <\/em><\/strong><em>The definition of code P0051 may 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 Possible Causes of the P0051 Code?<\/h2>\n\n\n\n<p>P0051 is a generic code, so it can have several triggers. Here are the most common:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/bad-o2-sensor-symptoms-causes-replacement-cost\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Faulty oxygen sensor\">Faulty oxygen sensor<\/a><\/li>\n\n\n\n<li>Oxygen sensor heater circuit issues<\/li>\n\n\n\n<li>Failure in the PCM<\/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 P0051 Code?<\/h2>\n\n\n\n<p>You may notice the following symptoms if you drive a car that has a logged P0051 error code:<\/p>\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=\"Check engine light is on\">Check engine light is on<\/a><\/li>\n\n\n\n<li>Excessive fuel consumption<\/li>\n\n\n\n<li>Poor engine performance<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0051 Code<\/h2>\n\n\n\n<p>To avoid possible complications in your vehicle, code P0051 should be resolved immediately. Diagnosing this code can be tricky because it has several triggers. Because of this, its diagnostic and repair steps may vary depending on the specifications of the vehicle.<\/p>\n\n\n\n<p>Refer to a repair manual for diagnostic strategies and reach out to a mechanic if you&rsquo;re not well-versed in auto repair. However, if you&rsquo;d like to get an idea of what the diagnostic process may involve, you can check 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\">\nhttps:\/\/www.youtube.com\/watch?v=fBQ-1pqSoXM&amp;t=118s\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0051 Code<\/h2>\n\n\n\n<p>Like most OBD-II codes, P0051 shares triggers and symptoms with other error codes. Despite having similarities with other codes, it is typically only resolved with a vehicle-specific solution.<\/p>\n\n\n\n<p>Code P0051 can be triggered by anything from a defective oxygen sensor to a faulty PCM, so you must <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=\"do your research\">do your research<\/a> thoroughly before attempting to resolve this code. It&rsquo;s best to leave repairs to the experts if you aren&rsquo;t confident in your automotive repair skills.<\/p>\n\n\n\n<p>If you&rsquo;re set on fixing this code yourself, only use credible online auto repair sources for guidance. Investing in an ALLDATA subscription is a good idea, as it can provide you with detailed factory repair information that you can use to resolve issues in your car.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How To Get a Quality Replacement O2 Sensor for Your Vehicle<\/h2>\n\n\n\n<p>Just because your vehicle can still run doesn&rsquo;t mean everything&rsquo;s okay under the hood. A faulty O2 sensor can cause your PCM to inject more fuel than necessary into the engine, which can clog your catalytic converter and reduce fuel economy. In other words, a faulty O2 sensor can lead to some costly repairs down the line. Luckily, you can avoid this by getting a new <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"O2 sensor\">O2 sensor<\/a> at CarParts.com.&nbsp;<\/p>\n\n\n\n<p>With just a few clicks, you can find a brand-new O2 sensor that perfectly fits your vehicle. All you have to do is enter your car&rsquo;s year, make, and model into our vehicle selector and choose from our wide selection of high-quality O2 sensors. CarParts.com also guarantees fast shipping, so you can get back on the road in no time. If you order before 12 p.m. ET, you can even get your new O2 sensor in as fast as two business days.&nbsp;<\/p>\n\n\n\n<p>Don&rsquo;t wait until your faulty O2 sensor starts stirring up trouble in your engine. Check out our extensive catalog of quality O2 sensors at CarParts.com today.<\/p>\n\n\n\n<div class=\"shop-project\">\n\n    <h2>Shop this Project<\/h2>\n\n    <ul class=\"shop-project-list\">\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/oxygen-sensor\/drivewire\/repn960915\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repn960915_1\" alt=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repn960915_1\" alt=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/oxygen-sensor\/drivewire\/repn960915\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated\">DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$49.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/oxygen-sensor\/drivewire\/repn960915\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/catalytic-converter\/evan-fischer\/repn960344\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repn960344_1\" alt=\"Evan Fischer&reg; &ndash; Rear Catalytic Converter, Federal EPA Standard, 46-State Legal, 2.5L Engine\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repn960344_1\" alt=\"Evan Fischer&reg; &ndash; Rear Catalytic Converter, Federal EPA Standard, 46-State Legal, 2.5L Engine\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/catalytic-converter\/evan-fischer\/repn960344\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Evan Fischer&reg; &ndash; Rear Catalytic Converter, Federal EPA Standard, 46-State Legal, 2.5L Engine\">Evan Fischer&reg; &ndash; Rear Catalytic Converter, Federal EPA Standard, 46-State Legal, 2.5L Engine<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$154.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/catalytic-converter\/evan-fischer\/repn960344\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n        \n        <li>\n            <div class=\"shop-project-item\">\n                <div class=\"stp-image-url\">\n                    <a href=\"https:\/\/www.carparts.com\/details\/engine-control-module\/dorman\/rb318116\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/a1777747_5\" alt=\"Dorman&reg;  &ndash; 318-116 OE Solutions Series Engine Control Module - Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/a1777747_5\" alt=\"Dorman&reg;  &ndash; 318-116 OE Solutions Series Engine Control Module - Direct Fit, Sold individually\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/engine-control-module\/dorman\/rb318116\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dorman&reg;  &ndash; 318-116 OE Solutions Series Engine Control Module &ndash; Direct Fit, Sold individually\">Dorman&reg;  &ndash; 318-116 OE Solutions Series Engine Control Module &ndash; Direct Fit, Sold individually<\/a>\n                        <\/p>\n                    \n                    <div class=\"stp-stars\">\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/shop-project\/stars\/star-0.svg\" alt=\"0 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$206.99<\/p>\n                    \n                    <p><small>Price and rating may change from the time content is published.<\/small><\/p>\n\n                                            <p class=\"stp-cta\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/engine-control-module\/dorman\/rb318116\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Shop Now\">Shop Now<\/a>\n                        <\/p>\n                                    <\/div>\n\n            <\/div>\n        <\/li>\n\n            <\/ul>\n<\/div>\n\n\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>An OBD-II code is designed to inform you about the possible issues that your vehicle may have. For you to&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0051-code-ho2s-heater-control-circuit-low-bank-2-sensor-1\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":16630,"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],"ppma_author":[2607,2985],"class_list":{"0":"post-16627","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":"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>P0051 Code: HO2S Heater Control Circuit Low (Bank 2 Sensor 1) - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Struggling to fix the P0051 code? Learn all about the definition, possible triggers, and common symptoms of this trouble code with this brief guide.\" \/>\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\/p0051-code-ho2s-heater-control-circuit-low-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=\"P0051 Code: HO2S Heater Control Circuit Low (Bank 2 Sensor 1) - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Struggling to fix the P0051 code? 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