{"id":80060,"date":"2023-01-23T23:32:39","date_gmt":"2023-01-24T07:32:39","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=80060"},"modified":"2024-12-19T05:21:21","modified_gmt":"2024-12-19T13:21:21","slug":"p2120-code-throttle-position-sensor-switch-c-circuit-malfunction","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/","title":{"rendered":"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction"},"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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column80060_dd95ac-1f > .kt-inside-inner-col,.kadence-column80060_dd95ac-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-column80060_dd95ac-1f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column80060_dd95ac-1f > .kt-inside-inner-col{flex-direction:column;}.kadence-column80060_dd95ac-1f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column80060_dd95ac-1f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column80060_dd95ac-1f{position:relative;}@media all and (max-width: 1024px){.kadence-column80060_dd95ac-1f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column80060_dd95ac-1f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column80060_dd95ac-1f inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-004b2d  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-90f7cf\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading80060_45f2c0-1f, .wp-block-kadence-advancedheading.kt-adv-heading80060_45f2c0-1f[data-kb-block=\"kb-adv-heading80060_45f2c0-1f\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading80060_45f2c0-1f mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading80060_45f2c0-1f[data-kb-block=\"kb-adv-heading80060_45f2c0-1f\"] 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-heading80060_45f2c0-1f img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading80060_45f2c0-1f[data-kb-block=\"kb-adv-heading80060_45f2c0-1f\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading80060_45f2c0-1f summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading80060_45f2c0-1f\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The P2120 code stands for &ldquo;Throttle Position Sensor\/Switch C Circuit Malfunction.&rdquo; It&rsquo;s set by the PCM when it detects a voltage outside the normal operating range.<\/li>\n\n\n\n<li>Some of the common causes of the code include a sticking throttle return spring, MAP or TPS connector issues, and a misrouted harness.<\/li>\n\n\n\n<li>Symptoms to look out for are an illuminated check engine light, misfires, and idling.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">What Does a P2120 Code Mean?<\/h2>\n\n\n\n<p><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) P2120 stands for &ldquo;Throttle Position Sensor\/Switch C Circuit Malfunction.&rdquo; The TPS is a potentiometer located on the throttle body. It detects the angle of the throttle blade. The TPS sends a signal to the PCM (powertrain control module) as the throttle blade moves.<\/p>\n\n\n\n<p>P2120 is set when the PCM detects a voltage that is outside of its normal operating range. The letter &ldquo;D&rdquo; denotes a specific circuit, sensor, or area of a specific circuit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">More on Throttle Position Sensors<\/h2>\n\n\n\n<p>A typical throttle position sensor usually has three wires. These include a 5-volt reference feed wire that sends a message from the computer, a signal return, and a voltage signal wire. As the throttle opens, the voltage sent to the PCM varies.<\/p>\n\n\n\n<p>If you&rsquo;re planning to diagnose or fix code P2120 yourself, you can read our advanced technical discussion about <a href=\"https:\/\/www.carparts.com\/blog\/p0122-code-throttle-position-sensor-switch-a-circuit-low-input\/#A_Closer_Look_at_Throttle_Position_Sensors\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"throttle position sensors\">throttle position sensors<\/a> for more useful information. A better understanding of the <a href=\"https:\/\/www.carparts.com\/blog\/p2135-code-throttle-pedal-position-sensor-switch-a-b-voltage-correlation\/#How_Code_P2135_is_Set\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"electronic throttle control (ETC) system\">electronic throttle control (ETC) system<\/a> can also help you find the best way to approach the issue.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of the P2120 code can be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<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 Causes of a P2120 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Sticking throttle return spring<\/li>\n\n\n\n<li>MAP or TPS connector issues<\/li>\n\n\n\n<li>Misrouted harness<\/li>\n\n\n\n<li>Malfunctioning TPS or <a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"PCM\">PCM<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Common Symptoms of the P2120 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><a href=\"https:\/\/www.carparts.com\/blog\/what-is-a-misfire-plus-common-obd-codes-linked-to-a-misfiring-engine\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine misfires\">Engine misfires<\/a> when idle or at highway speed<\/li>\n\n\n\n<li>Issues with idling and <a href=\"https:\/\/www.carparts.com\/blog\/car-shuts-off-while-driving-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"stalling\">stalling<\/a><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P2120 Code<\/h2>\n\n\n\n<p>Even though DTC P2120 is a generic trouble code, there isn&rsquo;t a universal fix for it. Depending on the make and model of the vehicle, several diagnostic procedures may be required.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"577\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-1024x577.jpg\" alt=\"mechanic encounters the p2120 code\" class=\"wp-image-80276\" style=\"width:1024px;height:577px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-1024x577.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-300x169.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-768x432.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-1536x865.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code-150x84.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-encounters-the-p2120-code.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">You should leave vehicle repair and diagnosis to a reliable mechanic if you lack experience in these areas.<\/figcaption><\/figure>\n\n\n\n<p>In addition to a scan tool, you&rsquo;ll need particular tools and technical details about your throttle position sensor. You should leave vehicle repair and diagnosis to a reliable mechanic if you lack experience in these areas. Otherwise, you can go ahead and identify the problem&rsquo;s root cause on your own.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P2120 Code<\/h2>\n\n\n\n<p>It can be challenging to clear the P2120 error code, particularly if you don&rsquo;t have the required DIY and automotive expertise. If that&rsquo;s the case, it&rsquo;s better to bring your car to a shop for repairs so that an expert can handle the situation.<\/p>\n\n\n\n<p>If, however, you&rsquo;re certain that you can erase the error code by yourself, make sure you have the appropriate repair manual close at hand before beginning. Check out vehicle-specific guides from resources like Chilton or an ALLDATA subscription, if you haven&rsquo;t already.<\/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\"> 2<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>What Does a P2120 Code Mean? Diagnostic trouble code (DTC) P2120 stands for &ldquo;Throttle Position Sensor\/Switch C Circuit Malfunction.&rdquo; The&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":80277,"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":[3172,1323,1615,1679],"ppma_author":[2607,2985],"class_list":{"0":"post-80060","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-accelerator-pedal","9":"tag-engine-control-module-2","10":"tag-throttle-body","11":"tag-throttle-position-sensor","12":"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>P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what a P2120 code stands for and what it could mean for your vehicle. 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\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what a P2120 code stands for and what it could mean for your vehicle. Read on for more information.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/\" \/>\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=\"2023-01-24T07:32:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:21:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1367\" \/>\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=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\"},\"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\":\"P2120 Code: Throttle Position Sensor\\\/Switch C Circuit Malfunction\",\"datePublished\":\"2023-01-24T07:32:39+00:00\",\"dateModified\":\"2024-12-19T13:21:21+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\"},\"wordCount\":538,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/mechanic-troubleshooting-p2120-code-scaled.jpg\",\"keywords\":[\"accelerator-pedal\",\"engine-control-module\",\"throttle-body\",\"throttle-position-sensor\"],\"articleSection\":[\"OBD-II Trouble Codes\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\",\"name\":\"P2120 Code: Throttle Position Sensor\\\/Switch C Circuit Malfunction - In The Garage with CarParts.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/mechanic-troubleshooting-p2120-code-scaled.jpg\",\"datePublished\":\"2023-01-24T07:32:39+00:00\",\"dateModified\":\"2024-12-19T13:21:21+00:00\",\"description\":\"Find out what a P2120 code stands for and what it could mean for your vehicle. Read on for more information.\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/mechanic-troubleshooting-p2120-code-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/01\\\/mechanic-troubleshooting-p2120-code-scaled.jpg\",\"width\":2048,\"height\":1367,\"caption\":\"mechanic troubleshooting p2120 code\"},{\"@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\\\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction - In The Garage with CarParts.com","description":"Find out what a P2120 code stands for and what it could mean for your vehicle. 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\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/","og_locale":"en_US","og_type":"article","og_title":"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction - In The Garage with CarParts.com","og_description":"Find out what a P2120 code stands for and what it could mean for your vehicle. Read on for more information.","og_url":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/","og_site_name":"In The Garage with CarParts.com","article_publisher":"https:\/\/www.facebook.com\/carpartscom","article_published_time":"2023-01-24T07:32:39+00:00","article_modified_time":"2024-12-19T13:21:21+00:00","og_image":[{"width":2048,"height":1367,"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_creator":"@carpartscom","twitter_site":"@carpartscom","twitter_misc":{"Written by":"","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#article","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/"},"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":"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction","datePublished":"2023-01-24T07:32:39+00:00","dateModified":"2024-12-19T13:21:21+00:00","mainEntityOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/"},"wordCount":538,"commentCount":0,"publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","keywords":["accelerator-pedal","engine-control-module","throttle-body","throttle-position-sensor"],"articleSection":["OBD-II Trouble Codes"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/","url":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/","name":"P2120 Code: Throttle Position Sensor\/Switch C Circuit Malfunction - In The Garage with CarParts.com","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#primaryimage"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","datePublished":"2023-01-24T07:32:39+00:00","dateModified":"2024-12-19T13:21:21+00:00","description":"Find out what a P2120 code stands for and what it could mean for your vehicle. Read on for more information.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/#primaryimage","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","width":2048,"height":1367,"caption":"mechanic troubleshooting p2120 code"},{"@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\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/"}]}},"featured_image_src":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","featured_image_src_square":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/01\/mechanic-troubleshooting-p2120-code-scaled.jpg","author_info":{"display_name":"","author_link":"https:\/\/www.carparts.com\/blog\/p2120-code-throttle-position-sensor-switch-c-circuit-malfunction\/"},"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"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"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"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/80060","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=80060"}],"version-history":[{"count":0,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/80060\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media\/80277"}],"wp:attachment":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media?parent=80060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/categories?post=80060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/tags?post=80060"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=80060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}