{"id":71892,"date":"2022-09-06T02:07:33","date_gmt":"2022-09-06T09:07:33","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=71892"},"modified":"2023-09-04T21:29:43","modified_gmt":"2023-09-05T04:29:43","slug":"p0670-code-glow-plug-control-module-circuit-open","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/p0670-code-glow-plug-control-module-circuit-open\/","title":{"rendered":"P0670 Code: Glow Plug Control Module Circuit \/ Open"},"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_d40dbe-77 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_d40dbe-77 > .kt-inside-inner-col,.kadence-column_d40dbe-77 > .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_d40dbe-77 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_d40dbe-77 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_d40dbe-77 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_d40dbe-77 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_d40dbe-77{position:relative;}@media all and (max-width: 1024px){.kadence-column_d40dbe-77 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_d40dbe-77 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_d40dbe-77 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-71501d  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-b9433d\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_84bac8-d2, .wp-block-kadence-advancedheading.kt-adv-heading_84bac8-d2[data-kb-block=\"kb-adv-heading_84bac8-d2\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_84bac8-d2 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_84bac8-d2[data-kb-block=\"kb-adv-heading_84bac8-d2\"] 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_84bac8-d2 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_84bac8-d2[data-kb-block=\"kb-adv-heading_84bac8-d2\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_84bac8-d2 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_84bac8-d2\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>DTC P0670 stands for &ldquo;Glow Plug Control Module Circuit\/Open.&rdquo; It means that the PCM has detected a problem with the glow plug control module or its circuit.<\/li><li>Faulty glow plugs, a malfunctioning glow plug control module, and circuit problems are some of the problems that could trigger the issue.<\/li><li>Some symptoms of the P0670 code include engine knocking when the engine is cold, a lack of power when the engine is cold, and a lit check engine light.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Is your vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"check engine light on\">check engine light on<\/a>? Plug a scan tool into your vehicle to check if it has any trouble codes. If the P0670 code has been triggered, read this article to learn about the code&rsquo;s definition, common causes, and common symptoms.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Does the P0670 Code Mean?<\/h2>\n\n\n\n<p>The P0670 code is defined as Glow Plug Control Module Circuit\/Open. The P0670 triggers when the powertrain control module (PCM) detects a problem with the glow plug control module or its circuit.<\/p>\n\n\n\n<p>Some diesel-powered vehicles have glow plugs. When the key is turned, the glow plug control module or PCM will turn on the <a href=\"https:\/\/www.carparts.com\/glow-plug\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"glow plugs\">glow plugs<\/a> for a set amount of time. The amount of time the glow plugs are activated is dependent on the temperature detected by the sensors.<\/p>\n\n\n\n<p>Problems with the glow plugs tend to result in starting problems since the combustion chambers of diesel engines need to be pre-heated by the glow plugs before startup. Otherwise, diesel won&rsquo;t combust properly, which can result in various engine-related symptoms.<\/p>\n\n\n\n<p><em><strong>Note:<\/strong> The definition of the P0670 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<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-1024x683.jpg\" alt=\"a mechanic checking car glow plugs\" class=\"wp-image-71930\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-1024x683.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/08\/checking-car-glow-plugs.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The P0670 triggers when the PCM detects a problem with the glow plug control module or its circuit.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Causes of the P0670 Code?<\/h2>\n\n\n\n<p>The following problems can trigger the P0670 code:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Failed glow plug control module<\/li><li>PCM failure<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/the-top-4-symptoms-of-bad-glow-plugs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Failed glow plug\">Failed glow plug<\/a><\/li><li>Circuit problems, such as a damaged <a href=\"https:\/\/www.carparts.com\/blog\/car-wiring\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"wire\">wire<\/a> or poor connection<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">What are the Common Symptoms of the P0670 Code?<\/h2>\n\n\n\n<p>The P0670 code can cause your vehicle to show the following symptoms:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Difficulty starting or <a href=\"https:\/\/www.carparts.com\/blog\/my-car-wont-start-what-should-i-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"refusal to start\">refusal to start<\/a> in cold weather<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/engine-knocking-sound-what-does-it-mean\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine knock\">Engine knock<\/a> while the engine is cold<\/li><li>Lack of power while the engine is cold<\/li><li><a href=\"https:\/\/www.carparts.com\/blog\/smoke-from-exhaust-meaning\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"White smoke from the exhaust\">White smoke from the exhaust<\/a> after the engine start<\/li><li>Illuminated check engine light<\/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\">How to Diagnose the P0670 Code<\/h2>\n\n\n\n<p>A faulty glow plug module or glow plug wiring harnesses are some of the common causes of the P0670 code. However, you should never assume that your vehicle has these issues without verifying with a proper diagnosis. However, a proper diagnosis might be difficult because the part might not be easily accessible. Additionally, you might need special tools or knowledge in order to access and test the concerned parts.<\/p>\n\n\n\n<p>If you don&rsquo;t think you&rsquo;re up to the task, then you shouldn&rsquo;t hesitate to leave the task to a professional mechanic.<\/p>\n\n\n\n<p>Want to diagnose the problem yourself? Watch the video below to get an idea of what the process might involve:<\/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=\"07 Dodge Sprinter 3.0L Code P0670 - Glow Plug Module Diagnosis\/Glow Plug Control Module Circuit Open\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/zC-XFjA76os?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 P0670 Code<\/h2>\n\n\n\n<p>When it comes to resolving the problems causing the P0670 error code, your repair process should be based on your diagnosis. The code&rsquo;s definition and common causes do signify that the problem is related to the glow plugs, but that isn&rsquo;t always the case so you shouldn&rsquo;t immediately replace your glow plug control module. Always keep in mind that there isn&rsquo;t a magic bullet when it comes to fixing <a href=\"https:\/\/www.carparts.com\/blog\/search-obd2-codes-list\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"diagnostic trouble codes (DTC)\">diagnostic trouble codes (DTC)<\/a>.<\/p>\n\n\n\n<p>After you&rsquo;ve identified the culprit, consult trusted internet repair resources and how-to guides. <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Consulting your repair manual\">Consulting your repair manual<\/a> or <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=\"internet repair databases\">internet repair databases<\/a> can also be beneficial because they might have important information regarding your issue.<\/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>Is your vehicle&rsquo;s check engine light on? Plug a scan tool into your vehicle to check if it has any&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/p0670-code-glow-plug-control-module-circuit-open\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":71929,"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":[],"ppma_author":[2607,2855],"class_list":{"0":"post-71892","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-obd-ii-trouble-codes","8":"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>P0670 Code: Glow Plug Control Module Circuit \/ Open - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Did the P0670 code trigger in your vehicle? This article will inform you about its definition and common causes and symptoms.\" \/>\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\/p0670-code-glow-plug-control-module-circuit-open\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0670 Code: Glow Plug Control Module Circuit \/ Open - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Did the P0670 code trigger in your vehicle? 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