{"id":85121,"date":"2023-06-08T18:52:09","date_gmt":"2023-06-09T01:52:09","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=85121"},"modified":"2024-12-19T05:58:43","modified_gmt":"2024-12-19T13:58:43","slug":"p1682-code-ignition-1-switch-circuit-2","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p1682-code-ignition-1-switch-circuit-2\/","title":{"rendered":"P1682 Code: Ignition 1 Switch Circuit 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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column85121_9f640e-4f > .kt-inside-inner-col,.kadence-column85121_9f640e-4f > .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-column85121_9f640e-4f > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column85121_9f640e-4f > .kt-inside-inner-col{flex-direction:column;}.kadence-column85121_9f640e-4f > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column85121_9f640e-4f > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column85121_9f640e-4f{position:relative;}@media all and (max-width: 1024px){.kadence-column85121_9f640e-4f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column85121_9f640e-4f > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column85121_9f640e-4f inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-cb159c  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-fe30de\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading85121_7bdc16-b5, .wp-block-kadence-advancedheading.kt-adv-heading85121_7bdc16-b5[data-kb-block=\"kb-adv-heading85121_7bdc16-b5\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading85121_7bdc16-b5 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading85121_7bdc16-b5[data-kb-block=\"kb-adv-heading85121_7bdc16-b5\"] 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-heading85121_7bdc16-b5 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading85121_7bdc16-b5[data-kb-block=\"kb-adv-heading85121_7bdc16-b5\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading85121_7bdc16-b5 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading85121_7bdc16-b5\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DTC P1682 stands for &ldquo;Ignition 1 Switch Circuit 2,&rdquo; and this is logged when the PCM detects a voltage difference between multiple ignition feeds.<\/li>\n\n\n\n<li>Code P1682 is often caused by a malfunctioning ignition switch, a bad electrical connection, and an open or shorted ignition switch harness.<\/li>\n\n\n\n<li>The most common symptoms of code P1682 include a lit check engine light, a weak or dead battery, or an engine that struggles to start.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Like any other component in your vehicle, the parts of your ignition may malfunction for several reasons. Code P1682 is a generic trouble code related to a fault in the ignition switch circuit.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P1682 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) P1682 stands for &ldquo;Ignition 1 Switch Circuit 2.&rdquo;<\/p>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/blog\/the-ignition-system\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ignition switch\">ignition switch<\/a> indirectly activates the relay that provides voltage from the <a href=\"https:\/\/www.carparts.com\/battery\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"battery\">battery<\/a> to the <a href=\"https:\/\/www.carparts.com\/ignition-coil\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ignition coil\">ignition coil<\/a> and the <a href=\"https:\/\/www.carparts.com\/fuel-injector\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"injectors\">injectors<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1009\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-1024x1009.jpg\" alt=\"multiple ignition feeds to the pcm ecm\" class=\"wp-image-87481\" style=\"width:1024px;height:1009px\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-1024x1009.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-300x296.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-768x757.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-1536x1514.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-75x75.jpg 75w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-96x96.jpg 96w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm-150x148.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/07\/multiple-ignition-feeds-to-the-pcm-ecm.jpg 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">There are multiple ignition feeds to the PCM\/ECM and the PCM expects all of the voltages at those inputs to be very near the same voltage. If any of the five voltage feeds in the system shown in this diagram is less than the PCM\/ECM expects to see, code P1682 or another similar code will be stored. Other systems are similar. | Image Source: Richard McCuistian.<\/figcaption><\/figure>\n\n\n\n<p>A vehicle&rsquo;s electronic control module (ECM) usually relies on two or more ignition 1 voltage circuits and will also have an always-hot battery circuit for &ldquo;keep alive&rdquo; memory. These circuits deliver power to all internal ECM circuits that are connected to the operation of your ride&rsquo;s throttle actuator control (TAC). This switch is connected to the powertrain relay. Another circuit is used to apply power to other internal ECM circuits. It&rsquo;s connected to the crank\/run relay.<\/p>\n\n\n\n<p>Once the electronic control module (ECM) detects that there&rsquo;s a voltage difference between these two circuits. It&rsquo;ll trigger the P1682 code.<\/p>\n\n\n\n<p><strong><em>Note:<\/em><\/strong><em> The definition of code P1682 may be different depending on the vehicle manufacturer. Consult the appropriate repair manual or repair database for the exact code definition.<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">P1682 on GM Vehicles&nbsp;<\/h3>\n\n\n\n<p>On GM vehicles, the code P1682 is defined as &ldquo;Driver 5 Line 2.&rdquo; The code is set when the vehicle&rsquo;s computer detects that the voltage difference between circuit 1 and circuit 2 is higher than the maximum threshold set by GM.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Common Causes of the P1682 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.carparts.com\/blog\/ignition-switch-problems-signs-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Malfunctioning ignition switch\">Malfunctioning ignition switch<\/a><\/li>\n\n\n\n<li>Open or shorted ignition switch harness<\/li>\n\n\n\n<li>Electrical connection issues<\/li>\n\n\n\n<li>Faulty <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ECM\">ECM<\/a><\/li>\n<\/ul>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">What Are the Common Symptoms of the P1682 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\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"No start condition\">No start condition<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/5-signs-of-a-bad-battery\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Weak or dead battery\">Weak or dead battery<\/a><\/li>\n\n\n\n<li>Noise coming from the hood<\/li>\n\n\n\n<li><a href=\"https:\/\/www.carparts.com\/blog\/what-causes-dim-headlights\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Dim headlights\">Dim headlights<\/a><\/li>\n\n\n\n<li><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\n\n\n<li>Issues with the fuse<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P1682 Code<\/h2>\n\n\n\n<p>The P1682 is a manufacturer-specific code, so there&rsquo;s no universal diagnostic procedure that would work for all vehicles. Keep in mind that the way a vehicle is designed tends to vary based on its manufacturer.<\/p>\n\n\n\n<p>If you&rsquo;re not sure how to determine what&rsquo;s causing the problem, it&rsquo;s best to take your vehicle to an auto repair shop for a proper diagnosis. Otherwise, you can do it yourself.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P1682 Code<\/h2>\n\n\n\n<p>Resolving a P1682 error code can be challenging, especially if you don&rsquo;t have the knowledge and equipment to clear the code. If that&rsquo;s the case, your best option is to let a licensed mechanic address the issue for you.<\/p>\n\n\n\n<p>But if you&rsquo;re confident that you can resolve the trouble code on your own, make sure you have the right repair guide before you get started. Find vehicle-specific guides from resources like Chilton or an ALLDATA subscription.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a New Ignition Switch for Your Ride<\/h2>\n\n\n\n<p>A P1682 code can be caused by a bad ignition switch or an issue with its harness or electrical connections. It&rsquo;s a good thing that finding a replacement ignition switch for your ride is easy when you shop online.<\/p>\n\n\n\n<p>There&rsquo;s no need to go to multiple physical stores just to hunt down the right ignition switch for your ride. <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a> is your one-stop destination for quality automotive parts. We carry a wide selection of <a href=\"https:\/\/www.carparts.com\/ignition_switch\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"ignition switches\">ignition switches<\/a> that are designed for various makes and models.<\/p>\n\n\n\n<p>Our ignition switches are engineered to match or exceed standards, so you can be sure that they&rsquo;re reliable and durable. Use our vehicle selector to ensure the perfect fit, and place your order with just a few clicks.<\/p>\n\n\n\n<p>Need to get back on the road as soon as possible? We&rsquo;ll ship your order from the nearest distribution center, so you can expect your package to arrive in a matter of days.<\/p>\n\n\n\n<p>Don&rsquo;t let ignition problems ruin your vehicle&rsquo;s performance. Explore our extensive catalog today, and order a new ignition switch for your ride.&nbsp;<\/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\"> 3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Like any other component in your vehicle, the parts of your ignition may malfunction for several reasons. Code P1682 is&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p1682-code-ignition-1-switch-circuit-2\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":85123,"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":[73,1323,1169,1170,1171],"ppma_author":[2607,2985],"class_list":{"0":"post-85121","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-battery","9":"tag-engine-control-module-2","10":"tag-ignition-coil-2","11":"tag-ignition-switch-2","12":"tag-spark-plug-2","13":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P1682 Code: Ignition 1 Switch Circuit 2 - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Did your scan tool retrieve a P1682 code? Discover what it means, as well as its common causes and symptoms in this article.\" \/>\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\/p1682-code-ignition-1-switch-circuit-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P1682 Code: Ignition 1 Switch Circuit 2 - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Did your scan tool retrieve a P1682 code? Discover what it means, as well as its common causes and symptoms in this article.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p1682-code-ignition-1-switch-circuit-2\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-09T01:52:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-12-19T13:58:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/06\/driver-putting-car-ignition-key-into-the-ignition-switch-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2048\" \/>\n\t<meta property=\"og:image:height\" content=\"1366\" \/>\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=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p1682-code-ignition-1-switch-circuit-2\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p1682-code-ignition-1-switch-circuit-2\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. 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