{"id":74616,"date":"2022-10-07T00:39:54","date_gmt":"2022-10-07T07:39:54","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=74616"},"modified":"2023-09-04T22:17:17","modified_gmt":"2023-09-05T05:17:17","slug":"p0690-code-ecm-pcm-power-relay-circuit-high","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0690-code-ecm-pcm-power-relay-circuit-high\/","title":{"rendered":"P0690 Code: ECM\/PCM Power Relay Circuit High"},"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-column_6ca89b-e0 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_6ca89b-e0 > .kt-inside-inner-col,.kadence-column_6ca89b-e0 > .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-column_6ca89b-e0 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_6ca89b-e0 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_6ca89b-e0 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_6ca89b-e0 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_6ca89b-e0{position:relative;}@media all and (max-width: 1024px){.kadence-column_6ca89b-e0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_6ca89b-e0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_6ca89b-e0 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-c77d33  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-87fa2c\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_b349c0-c5, .wp-block-kadence-advancedheading.kt-adv-heading_b349c0-c5[data-kb-block=\"kb-adv-heading_b349c0-c5\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_b349c0-c5 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_b349c0-c5[data-kb-block=\"kb-adv-heading_b349c0-c5\"] 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-heading_b349c0-c5 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_b349c0-c5[data-kb-block=\"kb-adv-heading_b349c0-c5\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_b349c0-c5 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_b349c0-c5\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The P0690 code is set once the PCM senses an issue in the relay that supplies it or its control circuit with voltage. The code is logged once the PCM detects a high voltage condition of the power relay sense circuit.<\/li><li>The common causes of this error code include a malfunctioning power relay, a circuit issue, or a PCM-related fault.<\/li><li>Your check engine light will illuminate once this code is logged. Your vehicle might also crank but won&rsquo;t start.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Modern vehicles are equipped with multiple systems that work together to guarantee smooth performance. They rely on computers such as the PCM (powertrain control module) to monitor the operation of their engines.<\/p>\n\n\n\n<p>Code P0690 is one of several trouble codes related to a fault with a circuit for the <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"electronic control module\">electronic control module<\/a> (ECM) or powertrain control module (PCM). Know more about it through this article.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0690 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> P0690 stands for &ldquo;ECM\/PCM Power Relay Circuit High.&rdquo; The code is set once the PCM detects an issue in the relay that supplies it or its control circuits with voltage.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-1024x602.jpg\" alt=\"car ecu pcm triggers p0690 code\" class=\"wp-image-74675\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/car-ecu-pcm-triggers-p0690-code.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Your vehicle&rsquo;s PCM is equipped with a power relay supplies the PCM circuits with the right amount of battery voltage.<\/figcaption><\/figure>\n\n\n\n<p>Your vehicle&rsquo;s PCM is equipped with a power relay supplies the PCM circuits with the right amount of battery voltage.<\/p>\n\n\n\n<p>In a typical circuit, <a href=\"https:\/\/www.carparts.com\/battery\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"battery\">battery<\/a> voltage is supplied constantly on one wire, while ground is connected as needed on another. The third circuit is usually responsible for carrying a signal from the ignition switch. There&rsquo;s a fourth wire that supplies voltage to the PCM when the relay is grounded and closes.&nbsp; If the PCM detects a high voltage condition on the power relay sense circuit, it will store the code P0690 and illuminate the check engine light.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of code P0690 can differ according to the vehicle manufacturer. Check 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 P0690 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Malfunctioning power relay<\/li><li>Circuit issues, such as a related component that&rsquo;s damaged or a poor connection<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/car-pcm-meaning-symptoms-of-failure-and-more\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"An issue with the PCM\">An issue with the PCM<\/a><\/li><\/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 P0690 Code?<\/h2>\n\n\n\n<ul class=\"wp-block-list\"><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><li><a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Vehicle cranks but won&rsquo;t start\">Vehicle cranks but won&rsquo;t start<\/a><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">How to Diagnose the P0690 Code<\/h2>\n\n\n\n<p>DTC P0690 can be logged in various vehicles.&nbsp; However, this does not mean that there&rsquo;s a universal solution for this issue. Remember that vehicles can be structured differently per manufacturer.<\/p>\n\n\n\n<p>Take your car to an auto repair shop and have it diagnosed by a mechanic if you&rsquo;re unfamiliar with the PCM, ECM, or vehicle repair in general.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Fix the P0690 Code<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-1024x682.jpg\" alt=\"auto mechanic using computer diagnostics after getting p0690 code\" class=\"wp-image-74676\" width=\"1024\" height=\"682\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/auto-mechanic-using-computer-diagnostics-after-getting-p0690-code.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>P0690 involves circuits within the PCM, so repairs can be complicated if you don&rsquo;t have the right tools and adequate experience.<\/figcaption><\/figure>\n\n\n\n<p>Clearing trouble codes isn&rsquo;t always easy. P0690 involves circuits within the PCM, so repairs can be complicated if you don&rsquo;t have the right tools and adequate experience. If you&rsquo;re not familiar with vehicle repair, we recommend taking your vehicle to a mechanic.<\/p>\n\n\n\n<p>If you&rsquo;re an experienced DIYer who wants to do the job yourself, we recommend doing your research and brushing up on vehicle-specific repair information.<\/p>\n\n\n\n<p>Repair manuals like those from Chilton or a subscription to an online repair database can give you information on the correct diagnostic and repair procedure to clear code P0690.<\/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>Modern vehicles are equipped with multiple systems that work together to guarantee smooth performance. They rely on computers such as&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0690-code-ecm-pcm-power-relay-circuit-high\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":74674,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1314],"tags":[1323],"ppma_author":[2607,2855],"class_list":{"0":"post-74616","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"tag-engine-control-module-2","9":"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>P0690 Code: ECM\/PCM Power Relay Circuit High - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Know more about the P0690 code, what it means, and the common symptoms and triggers related to this code.\" \/>\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\/p0690-code-ecm-pcm-power-relay-circuit-high\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0690 Code: ECM\/PCM Power Relay Circuit High - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Know more about the P0690 code, what it means, and the common symptoms and triggers related to this code.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/p0690-code-ecm-pcm-power-relay-circuit-high\/\" \/>\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=\"2022-10-07T07:39:54+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-05T05:17:17+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/09\/new-car-ecu-pcm-replacement-part.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1200\" \/>\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\\\/p0690-code-ecm-pcm-power-relay-circuit-high\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/p0690-code-ecm-pcm-power-relay-circuit-high\\\/\"},\"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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