{"id":8576,"date":"2022-05-26T00:16:00","date_gmt":"2022-05-26T07:16:00","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=8576"},"modified":"2025-05-09T08:15:40","modified_gmt":"2025-05-09T15:15:40","slug":"p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\/","title":{"rendered":"P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, 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\"> 7<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column8576_091938-7c > .kt-inside-inner-col,.kadence-column8576_091938-7c > .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-column8576_091938-7c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column8576_091938-7c > .kt-inside-inner-col{flex-direction:column;}.kadence-column8576_091938-7c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column8576_091938-7c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column8576_091938-7c{position:relative;}@media all and (max-width: 1024px){.kadence-column8576_091938-7c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column8576_091938-7c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column8576_091938-7c inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-2e5727  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-5f1094\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading8576_aec9e9-84, .wp-block-kadence-advancedheading.kt-adv-heading8576_aec9e9-84[data-kb-block=\"kb-adv-heading8576_aec9e9-84\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading8576_aec9e9-84 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading8576_aec9e9-84[data-kb-block=\"kb-adv-heading8576_aec9e9-84\"] 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-heading8576_aec9e9-84 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading8576_aec9e9-84[data-kb-block=\"kb-adv-heading8576_aec9e9-84\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading8576_aec9e9-84 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading8576_aec9e9-84\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DTC P0141 stands for &ldquo;Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2), and this indicates that there&rsquo;s something wrong with the heater circuit of engine bank 1&rsquo;s downstream O2 sensor.<\/li>\n\n\n\n<li>P0141 is typically caused by a faulty oxygen sensor heater, but it is also caused by problems with a vehicle&rsquo;s circuitry or its PCM.<\/li>\n\n\n\n<li>The two most common symptoms associated with P0141 are an illuminated check engine light and a failed emissions test.<\/li>\n\n\n\n<li>Replacing a damaged O2 sensor can cost anywhere from $360 to $410, inclusive of labor costs.<\/li>\n\n\n\n<li>A faulty O2 sensor can cause further damage to your engine, so it&rsquo;s best to avoid driving until you replace it.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>There are around 11,000 different trouble codes in the <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"OBD-II\">OBD-II<\/a> index, code P0141 being just one of them. This article will cover the details, causes, and symptoms of code P0141, so you could understand the issue better and come up with the proper fix.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the Code P0141 Mean?<\/h2>\n\n\n\n<p>DTC P0141 stands for &ldquo;Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2).&rdquo; It indicates that there&rsquo;s <strong>a problem with the heater circuit of engine bank 1&rsquo;s downstream O2 sensor<\/strong>. Your car&rsquo;s PCM tests the oxygen sensors&rsquo; heater circuits for integrity. If it finds an issue in the heater circuit for the engine bank 1&rsquo;s downstream oxygen sensor, it sets code P0141.<\/p>\n\n\n\n<p>P0141 is part of a family of codes listed as follows:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>P0141<\/strong> &ndash; Sensor Heater Circuit Bank 1 Sensor 2<\/li>\n\n\n\n<li><strong>P0161<\/strong> &ndash; <a href=\"https:\/\/www.carparts.com\/blog\/p0161-code-oxygen-sensor-heater-circuit-malfunction-bank-2-sensor-2\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Sensor Heater Circuit Bank 2 Sensor 2\">Sensor Heater Circuit Bank 2 Sensor 2<\/a><\/li>\n\n\n\n<li><strong>P0135<\/strong> &ndash; <a href=\"https:\/\/www.carparts.com\/blog\/p0135-code-heated-o2-sensor-heater-circuit-malfunction-bank-1-sensor-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"O2 Sensor Heater Circuit Bank 1 Sensor 1\">O2 Sensor Heater Circuit Bank 1 Sensor 1<\/a><\/li>\n\n\n\n<li><strong>P0155<\/strong> &ndash; <a href=\"https:\/\/www.carparts.com\/blog\/p0155-code-oxygen-sensor-heater-circuit-malfunction-bank-2-sensor-1\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"O2 Heater Circuit Bank 2, Sensor 1\">O2 Heater Circuit Bank 2, Sensor 1<\/a><\/li>\n<\/ul>\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\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-1024x683.jpg\" alt=\"oxygen sensor on catalyst pipe of gasoline engine car\" class=\"wp-image-38655\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-scaled.jpg 2048w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/05\/oxygen-sensor-on-catalyst-pipe-of-gasoline-engine-car-150x100.jpg 150w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Make sure you know bank 1 from bank 2 before you start clearing any of the codes.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Bank 1 vs Bank 2<\/h3>\n\n\n\n<p>With that in mind, it&rsquo;s important to note that Bank 1 is always where the number 1 cylinder is located. Thus, on Ford pickups, Bank 1 is the passenger side bank, but on Chevy and Dodge pickups, Bank 1 is the driver side bank. You need to know this, or you may end up working on the wrong sensor, so make sure you know bank 1 from bank 2 before you start clearing any of these codes.<\/p>\n\n\n\n<p><strong>Bank 1 Sensor 2<\/strong> is the oxygen (O2) sensor that&rsquo;s in the middle of the <a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"catalytic converter\">catalytic converter<\/a> or right behind the front catalytic converter (the converter that&rsquo;s closest to the engine). <strong>Bank 1 Sensor 1<\/strong> is the sensor between the engine and the catalytic converter. So make sure you know exactly which sensor is which before you start addressing the issue. <strong>Bank 2<\/strong> has a <strong>sensor 1<\/strong> and <strong>sensor 2<\/strong> laid out the same way.<\/p>\n\n\n\n<p>Oxygen sensors keep track of the oxygen levels in the air that&rsquo;s entering and leaving the catalytic converter. These sensors send that data back to the car&rsquo;s computer or PCM.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"700\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-1024x700.jpg\" alt=\"Oxygen Sensors by Richard McCuistian\" class=\"wp-image-68495\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-1024x700.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-300x205.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-768x525.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-1536x1049.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian-150x102.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/04\/Oxygen-Sensors-by-Richard-McCuistian.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Oxygen sensor 1 is between the warmup catalyst and the engine and sensor 2 is behind it. The warmup cat is the one closest to the engine, because some vehicles have another cat farther back in the exhaust and there are no sensors monitoring that one. This photo shows the light-off cat on a four cylinder. These cats are always very near the engine on newer cars because they need to heat up rapidly, and they are the ones monitored by a downstream sensor (Sensor 2). | Image source: Richard McCuistian.<\/figcaption><\/figure>\n\n\n\n<p>The PCM uses data from the upstream O2 sensor (the one before the converter) to fine-tune the engine&rsquo;s air-fuel mixture. Meanwhile, the PCM uses data from the downstream O2 sensor (the one after the converter) to determine converter efficiency.<\/p>\n\n\n<style>.kadence-column8576_97ed04-f5 > .kt-inside-inner-col,.kadence-column8576_97ed04-f5 > .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-column8576_97ed04-f5 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column8576_97ed04-f5 > .kt-inside-inner-col{flex-direction:column;}.kadence-column8576_97ed04-f5 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column8576_97ed04-f5 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column8576_97ed04-f5{position:relative;}@media all and (max-width: 1024px){.kadence-column8576_97ed04-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column8576_97ed04-f5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column8576_97ed04-f5 kb-section-dir-vertical kb-section-sm-dir-vertical inner-column-1 pro-tip-widget\"><div class=\"kt-inside-inner-col\"><style>.kb-row-layout-id8576_573310-89 > .kt-row-column-wrap{align-content:start;}:where(.kb-row-layout-id8576_573310-89 > .kt-row-column-wrap) > .wp-block-kadence-column{justify-content:start;}.kb-row-layout-id8576_573310-89 > .kt-row-column-wrap{column-gap:var(--global-kb-gap-none, 0rem );row-gap:var(--global-kb-gap-md, 2rem);padding-top:20px;padding-right:32px;padding-bottom:20px;padding-left:16px;grid-template-columns:minmax(0, calc(10% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)))minmax(0, calc(90% - ((var(--global-kb-gap-none, 0rem ) * 1 )\/2)));}.kb-row-layout-id8576_573310-89 > .kt-row-layout-overlay{opacity:0.00;}.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep{height:100px;}.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep svg{width:100%;}.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep svg{fill:#ffffff!important;}.kb-row-layout-id8576_573310-89 .kt-row-layout-top-sep{height:100px;}.kb-row-layout-id8576_573310-89 .kt-row-layout-top-sep svg{width:100%;}.kb-row-layout-id8576_573310-89 .kt-row-layout-top-sep svg{fill:#ffffff!important;}@media all and (max-width: 1024px){.kb-row-layout-id8576_573310-89 > .kt-row-column-wrap{grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}}@media all and (max-width: 1024px){.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep{height:px;}}@media all and (max-width: 1024px){.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep svg{width:%;}}@media all and (max-width: 767px){.kb-row-layout-id8576_573310-89 > .kt-row-column-wrap{padding-top:28px;padding-right:16px;padding-bottom:25px;padding-left:16px;grid-template-columns:minmax(0, 1fr) minmax(0, 2fr);}.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep{height:px;}.kb-row-layout-id8576_573310-89 .kt-row-layout-bottom-sep svg{width:%;}}<\/style><div class=\"kb-row-layout-wrap kb-row-layout-id8576_573310-89 alignnone pro-tip-wrap wp-block-kadence-rowlayout\"><div class=\"kt-row-column-wrap kt-has-2-columns kt-row-layout-right-golden kt-tab-layout-right-golden kt-mobile-layout-right-golden kt-row-valign-top\">\n<style>.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col{display:flex;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col{min-height:45px;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col,.kadence-column8576_5ed0e2-d3 > .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-column8576_5ed0e2-d3 > .kt-inside-inner-col{row-gap:0px;column-gap:0px;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > *, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column8576_5ed0e2-d3{position:relative;}@media all and (max-width: 1024px){.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;align-items:center;}}@media all and (min-width: 768px) and (max-width: 1024px){.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > *, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}@media all and (max-width: 767px){.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col{flex-direction:row;flex-wrap:wrap;justify-content:flex-start;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > *, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-image, .kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > figure.wp-block-kadence-image{margin-top:0px;margin-bottom:0px;}.kadence-column8576_5ed0e2-d3 > .kt-inside-inner-col > .kb-image-is-ratio-size{flex-grow:1;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column8576_5ed0e2-d3 kb-section-dir-horizontal kb-section-md-dir-horizontal inner-column-1 pro-tip-item1\"><div class=\"kt-inside-inner-col\"><style>.kb-image8576_538398-7e.kb-image-is-ratio-size, .kb-image8576_538398-7e .kb-image-is-ratio-size{max-width:45px;width:100%;}.wp-block-kadence-column > .kt-inside-inner-col > .kb-image8576_538398-7e.kb-image-is-ratio-size, .wp-block-kadence-column > .kt-inside-inner-col > .kb-image8576_538398-7e .kb-image-is-ratio-size{align-self:unset;}.kb-image8576_538398-7e figure{max-width:45px;}.kb-image8576_538398-7e .image-is-svg, .kb-image8576_538398-7e .image-is-svg img{width:100%;}.kb-image8576_538398-7e .kb-image-has-overlay:after{opacity:0.3;}<\/style>\n<div class=\"wp-block-kadence-image kb-image8576_538398-7e\"><figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/f_auto,dpr_auto,q_auto,c_pad\/carparts\/blog\/widgets\/protip\/services-icon\" alt=\"\" class=\"kb-img\"><\/figure><\/div>\n<\/div><\/div>\n\n\n<style>.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col,.kadence-column8576_b5bc87-e5 > .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-column8576_b5bc87-e5 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col{flex-direction:column;}.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column8576_b5bc87-e5{position:relative;}@media all and (max-width: 1024px){.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column8576_b5bc87-e5 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column8576_b5bc87-e5 inner-column-2 pro-tip-item2\"><div class=\"kt-inside-inner-col\">\n<div class=\"protip-desc\">\n\t<div class=\"help-tip\">\n\t\t<p><strong>Pro Tips<\/strong> are nuggets of information direct from ASE-certified automobile technicians working with CarParts.com, which may include unique, personal insights based on their years of experience working in the automotive industry. These can help you make more informed decisions about your car.<\/p>\n\t<\/div>\n    <div class=\"help-caption\">\n        <p>\n            <strong>Pro Tip:<\/strong>\n           What most people (even some mechanics) don&rsquo;t know is that if the upstream O2 sensor is deemed unreliable by the PCM, many platforms will begin to use the downstream sensor as a feedback signal for fuel control.\n        <\/p>\n    <\/div>\n<\/div>\n<\/div><\/div>\n\n<\/div><\/div><\/div><\/div>\n\n\n\n<p>The PCM regularly tests the heater circuits for integrity. When it detects a problem in the heater circuit for the engine bank 1&rsquo;s downstream oxygen sensor, it switches on the check engine light and logs the P0141 code.<\/p>\n\n\n\n    <div class=\"ai-summary-widget\">\n\n        <div class=\"ai-summary-grid\">\n\n            <div>\n                <div class=\"ai-avatar\">\n                    <figure>\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/ai-summary\/ai-bot\" alt=\"AI robot\">\n                    <\/figure>\n                    <span>ELI5<\/span>\n                <\/div>\n            <\/div>\n            <div>\n                <p>The oxygen sensor measures how much oxygen there is in the hot gases that the engine sends to the exhaust system. It sends the info about the oxygen levels to the car's computer, which can adjust how the engine runs to keep it working properly. There's at least one oxygen sensor in the exhaust system. Many exhaust systems have two or more oxygen sensors. One sensor measures the oxygen before the gases go into the exhaust system, and the other checks the gases after leaving the catalytic converter.<\/p>    \n            <\/div>\n\n        <\/div>\n\n        <div class=\"ai-summary-tooltip\">   \n            <p>Not everyone is an auto repair expert. <strong>ELI5 (&ldquo;Explain Like I&rsquo;m Five&rdquo;)<\/strong> provides layperson-friendly explanations of complex automotive concepts, systems, &amp; parts, so you can fully understand their importance. Great for casual car owners and DIY beginners! Powered by AI.<\/p>\n        <\/div>\n\n    <\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"916\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram-1024x916.png\" alt=\"light off catalyst diagram\" class=\"wp-image-69384\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram-1024x916.png 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram-300x268.png 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram-768x687.png 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram-150x134.png 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/05\/light-off-catalyst-diagram.png 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Always find cylinder number 1 and you&rsquo;ll know which bank is which on any engine. This diagram is accurate for most V engines except Fords, which have the #1 cylinder on the passenger side bank, which alters how the sensors are numbered as well. | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Why Do Oxygen Sensors Need Heat?&nbsp;<\/h2>\n\n\n\n<p>It&rsquo;s all about emissions. Oxygen sensors need to work as soon as possible (within a minute), but they won&rsquo;t function below a certain temperature. Conventional O2 sensors need to reach 600&deg;F. Meanwhile, O2 sensors that only have one wire won&rsquo;t work until the exhaust raises its zirconia element to its operating temperature.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Oxygen sensors need to work as soon as possible (within a minute), but they won&rsquo;t function below a certain temperature. Conventional O2 sensors need to reach 600&deg;F.<\/p>\n<cite><em>&ndash;&nbsp;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Richard McCuistian, ASE Certified Master Automobile Technician\">Richard McCuistian, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<p>Heated O2 sensors have four wires. Two of those wires are always the same color, usually either white or brown. Those are the two heater wires; one receives voltage with the key on (through a relay), and the other is the ground control from the powertrain control module (PCM).&nbsp;<\/p>\n\n\n\n<!-- Either there are no banners, they are disabled or none qualified for this location! -->\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<p>In the center of the O2 sensor is a heating element that looks similar to a diesel engine glow plug element. You can&rsquo;t see it without cutting the O2 sensor apart. It generally has around 6 ohms of resistance when cold, but a lot more resistance when hot.<\/p>\n\n\n\n<p>The PCM measures and controls current flow to the heater element through the ground it provides to the element. The current flow is measured, so if there is no current flow, the PCM will flag that condition by setting a P0141 diagnostic trouble code (DTC).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Possible Causes of the P0141 Code?<\/h2>\n\n\n\n<p>Several issues can lead to the PCM issuing an OBD code P0141. They include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Faulty oxygen sensor heater (most common)<\/li>\n\n\n\n<li>Circuit problems (e.g., damaged wiring, loose connections &ndash; fairly common)<\/li>\n\n\n\n<li>Issues with the PCM (e.g., software in need of an update &ndash; very rare)<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0141 Code?<\/h2>\n\n\n\n<p>There are only two common symptoms associated with code P0141:&nbsp;<\/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=\"An illuminated check engine light\">An illuminated check engine light<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/how-to-pass-an-emissions-test\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"A failed emissions test\">A failed emissions test<\/a>&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>If the OBD-II scanner indicates a P0141 trouble code, bring your vehicle to the nearest auto repair shop. A technician can determine if the fault lies with the oxygen sensor or somewhere else.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0141 Code<\/h2>\n\n\n\n<p>It can be difficult to diagnose most OBD-II codes. In the case of code P0141, there is a wide spectrum of issues to choose from when trying to determine what&rsquo;s causing the problem. As such, there isn&rsquo;t one specific way to diagnose the trouble code.<\/p>\n\n\n\n<p>To give you an idea of how to troubleshoot a P0141, check out the videos 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=\"P0141 Diagnosing O2 Sensor Heater Failure Codes -EricTheCarGuy\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/mzRjqht_U3Q?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<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=\"O2 Sensor Heater Quick-Fix\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/fBQ-1pqSoXM?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 P0141 Code<\/h2>\n\n\n\n<p>There isn&rsquo;t a &ldquo;magic bullet&rdquo; fix for code P0141. As previously mentioned, there are many possible causes, which means there are different ways to fix the issue.&nbsp;<\/p>\n\n\n\n<p>To properly fix the P0141 trouble code, you&rsquo;ll need to perform an accurate diagnosis first. Once you know what&rsquo;s causing the problem, only then can you conduct the necessary repairs.&nbsp;<\/p>\n\n\n\n<p>And remember, all vehicles are different. When troubleshooting and repairing DTCs, don&rsquo;t forget to consult the factory repair information for your application.&nbsp;<\/p>\n\n\n\n<p>Repair manuals, such as those from Chilton, are useful, but an ALLDATA subscription is even better. ALLDATA has single-vehicle subscriptions for DIYers that provide detailed factory repair information.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Does It Cost To Replace O2 Sensor Bank 1 Sensor 2?<\/h2>\n\n\n\n<p>On average, an oxygen sensor bank 1 and bank 2 typically cost around $360 to $410, inclusive of labor costs. Keep in mind that this value can still change, depending on several factors, such as your vehicle&rsquo;s year, make, and model. Replacement O2 sensors can also cost anywhere between $10 and $3,230.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Can I Drive a Car With a Bad O2 Sensor?<\/h2>\n\n\n\n<p>Your vehicle can still run with a faulty O2 sensor. However, this doesn&rsquo;t mean it&rsquo;s safe to drive. A malfunctioning O2 sensor can lead to several engine issues, including an incorrect air-fuel mixture, rough idling, and stalling. These can all cause further damage to your engine, which can be pricey to fix. For your own sake, it&rsquo;s best to avoid driving until you can replace the O2 sensor.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Get a High-Quality Oxygen Sensor Replacement&nbsp;<\/h2>\n\n\n\n<p>Did your scan tool read a P0141 code? If it&rsquo;s because of a bad oxygen sensor, you&rsquo;ll need to replace the faulty to resolve the error code. Luckily, you don&rsquo;t have to leave your home to buy an excellent oxygen sensor replacement for your ride when you shop online here at CarParts.com.<\/p>\n\n\n\n<p>It only takes a few minutes to find and order what you need here at <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a>. Simply input your ride&rsquo;s year, make, and model into our vehicle selector, and we&rsquo;ll filter our catalog to show oxygen sensors that fit your ride. All our replacement parts are sold at competitive prices, so you&rsquo;re sure to find one that fits your budget.<\/p>\n\n\n\n<p>Need to get back on the road as soon as possible? Our warehouses are strategically located across the country, so expect your order to reach you in just a few days. If you&rsquo;ve got questions, don&rsquo;t think twice about contacting our 24\/7 customer service team for help.<\/p>\n\n\n\n<p>Don&rsquo;t let a bad oxygen sensor ruin your trip. Take a look at our <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oxygens sensors\">oxygens sensors<\/a> and order yours today!<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Products Mentioned in this Guide<\/h2>\n\n\n\n<div class=\"reusable-productlink\">\n\n<!-- start of editable content -->\n\n<a href=\"https:\/\/www.carparts.com\/catalytic-converter\" target=\"_blank\" aria-label=\"catalytic converter\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repf960330_1\">\n<strong>Catalytic Converter<\/strong>\n<\/a>\n\n<a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" aria-label=\"oxygen sensor\" rel=\"noopener\">\n<img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/d_noimage.jpg,h_200,w_200,c_pad,f_auto,q_auto,dpr_auto,e_sharpen\/images\/repc960915_1\">\n<strong>Oxygen Sensor<\/strong>\n<\/a>\n\n<!-- end of editable content -->\n\n<\/div>\n\n\n\n<!-- Error, Advert is not available at this time due to schedule\/geolocation restrictions! -->\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\"> 7<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>There are around 11,000 different trouble codes in the OBD-II index, code P0141 being just one of them. This article&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":8580,"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":[504,162],"ppma_author":[2607,2985],"class_list":{"0":"post-8576","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","9":"tag-oxygen-sensor","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>P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2) - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out the definition, common causes, and symptoms of trouble code P0141, including other FAQ about oxygen sensors here.\" \/>\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\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0141 Code: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2) - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out the definition, common causes, and symptoms of trouble code P0141, including other FAQ about oxygen sensors here.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-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:author\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-26T07:16:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-09T15:15:40+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2020\/04\/oxygen-sensor.jpeg\" \/>\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=\"author\" content=\"CarParts.com Research Team, Richard McCuistian, ASE Certified Master Automobile Technician\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@https:\/\/twitter.com\/CarPartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"CarParts.com Research Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0141-code-oxygen-sensor-heater-circuit-malfunction-bank-1-sensor-2\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"1651\",\"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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