{"id":66984,"date":"2022-02-28T00:21:29","date_gmt":"2022-02-28T08:21:29","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=66984"},"modified":"2026-02-10T19:02:22","modified_gmt":"2026-02-11T03:02:22","slug":"p015a-o2-sensor-delayed-response-rich-to-lean-bank-1-sensor-1","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p015a-o2-sensor-delayed-response-rich-to-lean-bank-1-sensor-1\/","title":{"rendered":"P015A: O2 Sensor Delayed Response &#8211; Rich to Lean (Bank 1, Sensor 1)"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column66984_c61a21-3c > .kt-inside-inner-col,.kadence-column66984_c61a21-3c > .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-column66984_c61a21-3c > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column66984_c61a21-3c > .kt-inside-inner-col{flex-direction:column;}.kadence-column66984_c61a21-3c > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column66984_c61a21-3c > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column66984_c61a21-3c{position:relative;}@media all and (max-width: 1024px){.kadence-column66984_c61a21-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column66984_c61a21-3c > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column66984_c61a21-3c inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-5014f4  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-9b6fb3\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading66984_4b5573-ce, .wp-block-kadence-advancedheading.kt-adv-heading66984_4b5573-ce[data-kb-block=\"kb-adv-heading66984_4b5573-ce\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading66984_4b5573-ce mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading66984_4b5573-ce[data-kb-block=\"kb-adv-heading66984_4b5573-ce\"] 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-heading66984_4b5573-ce img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading66984_4b5573-ce[data-kb-block=\"kb-adv-heading66984_4b5573-ce\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading66984_4b5573-ce summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading66984_4b5573-ce\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P015A code stands for &ldquo;Oxygen (O2) Sensor Delayed Response&ndash;Rich to Lean,&rdquo; which means the powertrain control module (PCM) has detected that the O2 sensor isn&rsquo;t regularly sending back information.<\/li>\n\n\n\n<li>Some common causes of the P015A code include an exhaust leak, intake leaks, and failure of the air-fuel sensor.<\/li>\n\n\n\n<li>An illuminated check engine light, decreased fuel efficiency, and reduced engine performance are some common symptoms related to the P015A code.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Dealing with trouble codes may be overwhelming, especially if you&rsquo;re not very familiar with them. If you see a P015A code when you connect your car to an OBD-II scanner, read this article to learn about its definition, possible causes, and common symptoms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P015A Code Mean?<\/h2>\n\n\n\n<p>Diagnostic trouble code (DTC) P015A stands for &ldquo;O2 sensor delayed response&ndash;rich to lean.&rdquo; This trouble code is set when the powertrain control module (PCM) detects that the vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"oxygen sensor\">oxygen sensor<\/a> isn&rsquo;t regularly sending back information. The P015A code corresponds to oxygen sensor number 1, which analyzes the gases from engine bank 1. This oxygen sensor could also be an air-fuel sensor. If your vehicle has this type of sensor, then testing it would be different compared to a traditional oxygen sensor.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-1024x683.jpg\" alt=\"a car's o2 sensor\" class=\"wp-image-66990\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-768x513.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/image-of-an-o2-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Once the PCM detects that the vehicle&rsquo;s oxygen sensor isn&rsquo;t regularly sending back information, it will set the code P015A.<\/figcaption><\/figure>\n\n\n\n<p>The PCM expects the oxygen sensor to send information at predetermined times. It uses this information to determine the ideal values for engine variables such as air-fuel ratio and ignition timing. Without information from the oxygen sensor, the PCM won&rsquo;t be able to run the engine at its most efficient state.<\/p>\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><em><strong>Note: <\/strong>The definition of code P015A might be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P015A Code?<\/h2>\n\n\n\n<p>There are several issues that can cause the P015A code. These issues include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Exhaust leak<\/li>\n\n\n\n<li>Air-fuel sensor failure<\/li>\n\n\n\n<li>Intake leaks<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/heres-what-happens-when-your-cars-engine-air-filter-is-dirty\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dirty air filter\">Dirty air filter<\/a><\/li>\n\n\n\n<li>PCM failure<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Wiring\">Wiring<\/a> issues<\/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\/2022\/02\/old-catalytic-converter-1024x683.jpg\" alt=\"old catalytic converter\" class=\"wp-image-66991\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/02\/old-catalytic-converter.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">A defective catalytic converter can also trigger the P015A code.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P015A Code?<\/h2>\n\n\n\n<p>If you have a P015A code, then your vehicle might show these symptoms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Decreased fuel efficiency<\/li>\n\n\n\n<li>Reduced engine performance<\/li>\n\n\n\n<li>Other DTCs related to the oxygen sensor<\/li>\n\n\n\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<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P015A Code<\/h2>\n\n\n\n<p>It can be hard to properly diagnose the P015A code. Testing the oxygen sensor, wiring, or the PCM requires specialist equipment and knowledge. Accessing these components might be difficult for someone without experience. If you want to properly diagnose the faulty component that is triggering the P015A code, then you should consult a trusted automotive professional.<\/p>\n\n\n\n<p>The following video can give you a better idea of the diagnostic process:<\/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=\"P015A Nissan or other manifacturers .\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/uuUGeevQr3U?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 P015A Code<\/h2>\n\n\n\n<p>There usually isn&rsquo;t a single cure-all solution for any <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> because repair procedures can vary greatly between vehicles. To determine the right course of action, you must first get an accurate diagnosis.<\/p>\n\n\n\n<p>Once you&rsquo;ve identified what&rsquo;s triggering the P015A code, you can consult credible <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=\"online repair resources and how-to guides\">online repair resources and how-to guides<\/a> for possible solutions. When it comes to troubleshooting and repairing diagnostic codes, it&rsquo;s important that you <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"consult your vehicle&rsquo;s repair manual\">consult your vehicle&rsquo;s repair manual<\/a>.<\/p>\n\n\n\n<p>Chilton repair manuals can also be useful. However, ALLDATA subscriptions are even better, as they provide detailed factory repair information for drivers who want to do repairs themselves.<\/p>\n\n\n\n<p>If you don&rsquo;t have a lot of experience diagnosing or fixing trouble codes, it&rsquo;s best to consult a professional mechanic so you can avoid problems and more expensive repairs down the line.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Fix the P015A Trouble Code With a New Air Filter<\/h2>\n\n\n\n<p>Your engine won&rsquo;t operate at peak efficiency when the P015A trouble code is triggered. As a result, your vehicle might end up using more fuel, which means you&rsquo;ll need to refuel more frequently. Stop your vehicle from wasting fuel by getting replacement components like air filters that&rsquo;ll fix the P015A code.<\/p>\n\n\n\n<p>CarParts.com has an easy-to-use interface that allows you to easily find the right air filter that you need. Start by entering your vehicle&rsquo;s year, make, model, and engine type, and we&rsquo;ll show you a list of parts that will fit. We make it a point to source our components from some of the most reliable names in the industry. Our warehouses are strategically located all over the US to ensure that you can get your order within a matter of days.<\/p>\n\n\n\n<p>Have a clogged air filter? Don&rsquo;t neglect it and get the right <a href=\"https:\/\/www.carparts.com\/air-filter\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"air filter\">air filter<\/a> for your vehicle here 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\/repb960901\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repb960901_1\" alt=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated, With Female Connector\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repb960901_1\" alt=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated, With Female Connector\"><\/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\/repb960901\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated, With Female Connector\">DriveWire &ndash; Oxygen Sensor, 4-Wire, Heated, With Female Connector<\/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\">$22.99<\/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\/repb960901\" 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\/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\/air-filter\/replacement\/repc317103\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repc317103_1\" alt=\"Replacement &ndash; Air Filter\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/repc317103_1\" alt=\"Replacement &ndash; Air Filter\"><\/a>\n                <\/div>\n\n                <div class=\"stp-desc\">\n                                            <p class=\"stp-title\">\n                            <a href=\"https:\/\/www.carparts.com\/details\/air-filter\/replacement\/repc317103\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Replacement &ndash; Air Filter\">Replacement &ndash; Air Filter<\/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-5.svg\" alt=\"5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$12.92<\/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\/air-filter\/replacement\/repc317103\" 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\/a1-cardone\/a1777747\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label='&lt;img src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/a1777747_1\" alt=\"A1 Cardone&reg; &ndash; 77-7747 Reman Series Engine Control Module &ndash; Direct Fit, Sold individually\" \/&gt;'><img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/images\/a1777747_1\" alt=\"A1 Cardone&reg; &ndash; 77-7747 Reman Series Engine Control Module &ndash; 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\/a1-cardone\/a1777747\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"A1 Cardone&reg; &ndash; 77-7747 Reman Series Engine Control Module &ndash; Direct Fit, Sold individually\">A1 Cardone&reg; &ndash; 77-7747 Reman 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-4.5.svg\" alt=\"4.5 Stars\">\n                    <\/div>\n\n                                            <p class=\"stp-price\">$95.49<\/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\/a1-cardone\/a1777747\" 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Dealing with trouble codes may be overwhelming, especially if you&rsquo;re not very familiar with them. If you see a P015A&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p015a-o2-sensor-delayed-response-rich-to-lean-bank-1-sensor-1\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1651,"featured_media":66989,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1190],"ppma_author":[2607,3742],"class_list":{"0":"post-66984","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-oxygen-sensor-2","9":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P015A: O2 Sensor Delayed Response - Rich to Lean (Bank 1, Sensor 1) - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Learn about the P015A code\u2019s definition, possible causes, and common symptoms in this article. Read on for more.\" \/>\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\/p015a-o2-sensor-delayed-response-rich-to-lean-bank-1-sensor-1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P015A: O2 Sensor Delayed Response - Rich to Lean (Bank 1, Sensor 1) - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Learn about the P015A code\u2019s definition, possible causes, and common symptoms in this article. 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