{"id":893,"date":"2026-03-21T14:08:20","date_gmt":"2026-03-21T18:08:20","guid":{"rendered":"https:\/\/www.4roadservice.com\/resources\/?page_id=893"},"modified":"2026-03-21T14:08:23","modified_gmt":"2026-03-21T18:08:23","slug":"detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical","status":"publish","type":"page","link":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/","title":{"rendered":"Detroit Diesel SPN 3713 FMI 18 \u2013 DPF Soot Load Critical (Meaning, Causes &amp; Fix)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-fault-codes-dd13-dd15-dd16\/\">\u2190 Back to Detroit Diesel Fault Codes<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Detroit Diesel SPN 3713 FMI 18 indicates that the Diesel Particulate Filter soot load has reached a critical level requiring immediate attention. This is a more severe version of the FMI 16 fault and appears on DD13, DD15, and DD16 engines when soot accumulation has exceeded the point where normal regeneration may be sufficient. Immediate action is required to avoid severe derate or DPF damage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Symptoms<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Check engine light on <\/li>\n\n\n\n<li>DPF warning light illuminated <\/li>\n\n\n\n<li>Active derate condition <\/li>\n\n\n\n<li>Significantly reduced engine power <\/li>\n\n\n\n<li>Vehicle speed may be limited <\/li>\n\n\n\n<li>Parked regen may be blocked or unable to complete <\/li>\n\n\n\n<li>Exhaust back pressure significantly elevated<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Cause<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This code triggers when soot load in the DPF has reached the critical threshold, typically after the FMI 16 warning was not addressed. Common causes include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FMI 16 fault left unresolved allowing soot to continue accumulating <\/li>\n\n\n\n<li>Multiple failed regeneration attempts <\/li>\n\n\n\n<li>Regen inhibit switch preventing regeneration cycles <\/li>\n\n\n\n<li>Severely clogged DPF beyond normal regen capability <\/li>\n\n\n\n<li>Engine fueling or combustion issues causing excessive soot output <\/li>\n\n\n\n<li>Faulty DPF differential pressure sensor <\/li>\n\n\n\n<li>Operating conditions preventing regeneration temperatures from being reached<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Can You Keep Driving?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This is a severe fault and the engine will be in an active derate condition. Continued operation risks permanent DPF damage and potential engine damage from excessive exhaust back pressure. A parked regeneration should be attempted immediately and if unsuccessful the vehicle should be taken to a qualified diesel technician.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended Action<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Attempt a parked regeneration immediately if conditions allow. If the parked regen fails or cannot initiate, the vehicle needs professional service. At this soot level a forced regeneration using diagnostic software may be required. In severe cases the DPF may need to be removed for professional cleaning or replacement.<\/p>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1774116125473\"><strong class=\"schema-faq-question\"><strong>What does Detroit Diesel SPN 3713 FMI 18 mean?<\/strong><\/strong> <p class=\"schema-faq-answer\">It means the DPF soot load has reached a critical level that requires immediate action. This is more severe than the FMI 16 warning and indicates the regeneration process has not kept up with soot accumulation.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774116128215\"><strong class=\"schema-faq-question\">What causes SPN 3713 FMI 18?<\/strong> <p class=\"schema-faq-answer\">Most commonly this fault develops when the FMI 16 warning was not addressed in time. Other causes include failed regeneration attempts, a severely clogged DPF, or engine issues causing excessive soot production.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774116127830\"><strong class=\"schema-faq-question\"><strong>Can I keep driving with SPN 3713 FMI 18?<\/strong><\/strong> <p class=\"schema-faq-answer\">Not recommended. The engine is in active derate and continued operation risks permanent DPF damage and increased exhaust back pressure that can harm the engine.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774116127431\"><strong class=\"schema-faq-question\">Will SPN 3713 FMI 18 cause a derate?<\/strong> <p class=\"schema-faq-answer\">Yes. This is a severe derate triggering fault and power and speed will be significantly restricted until the soot load is reduced.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1774116126895\"><strong class=\"schema-faq-question\">How do I clear SPN 3713 FMI 18?<\/strong> <p class=\"schema-faq-answer\">Attempt a parked regeneration immediately. If unsuccessful seek professional service for a forced regen using diagnostic software. If the DPF is too severely clogged it may require removal for cleaning or replacement before the code will clear.<\/p> <\/div> <\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Related codes<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-16-dpf-soot-load-high\/\" type=\"link\" id=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-16-dpf-soot-load-high\/\">SPN 3713 FMI 16 <\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3719-fmi-0\/\" type=\"link\" id=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3719-fmi-0\/\">SPN 3719 FMI 0 <\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3216-fmi-21\/\" type=\"link\" id=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3216-fmi-21\/\">SPN 3216 FMI 21 <\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-5246-fmi-0\/\" type=\"link\" id=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-5246-fmi-0\/\">SPN 5246 FMI 0 <\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-1569-fmi-31\/\" type=\"link\" id=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-1569-fmi-31\/\">SPN 1569 FMI 31<\/a><\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading\">Need Immediate Help With This Fault Code?<\/h2>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">If your engine is derating, losing power, or unable to complete regeneration, don\u2019t risk further damage or costly downtime.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Use 4RoadService to locate mobile truck repair, dealer diagnostics, or emergency roadside assistance near your location.<\/p>\n\n\n\n<div class=\"wp-block-buttons has-off-white-background-color has-background is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/www.4roadservice.com\/truck-dealers\">Find Truck Repair Near Me<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-text-align-center wp-element-button\" href=\"https:\/\/www.4roadservice.com\/truck-repair\">Find Mobile Road Service<\/a><\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Important Notice<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The information provided above is for general informational purposes only and should not replace official OEM service procedures. Always consult the manufacturer\u2019s service manual or a qualified diesel technician before performing repairs. Operating a vehicle with active fault codes may result in further damage.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u2190 Back to Detroit Diesel Fault Codes Detroit Diesel SPN 3713 FMI 18 indicates that the Diesel Particulate Filter soot load has reached a critical level requiring immediate attention. This is a more severe version of the FMI 16 fault and appears on DD13, DD15, and DD16 engines when soot accumulation has exceeded the point &hellip; <a href=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Detroit Diesel SPN 3713 FMI 18 \u2013 DPF Soot Load Critical (Meaning, Causes &amp; Fix)<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-893","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SPN 3713 FMI 18 \u2013 DPF Soot Load Critical<\/title>\n<meta name=\"description\" content=\"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.\" \/>\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.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SPN 3713 FMI 18 \u2013 DPF Soot Load Critical\" \/>\n<meta property=\"og:description\" content=\"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/\" \/>\n<meta property=\"og:site_name\" content=\"4RoadService Resources\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/4roadservice\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-21T18:08:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.4roadservice.com\/resources\/wp-content\/uploads\/2015\/08\/logo-sidebar@2x.png\" \/>\n\t<meta property=\"og:image:width\" content=\"380\" \/>\n\t<meta property=\"og:image:height\" content=\"64\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@4RoadService\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/\",\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/\",\"name\":\"SPN 3713 FMI 18 \u2013 DPF Soot Load Critical\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#website\"},\"datePublished\":\"2026-03-21T18:08:20+00:00\",\"dateModified\":\"2026-03-21T18:08:23+00:00\",\"description\":\"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116125473\"},{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116128215\"},{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127830\"},{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127431\"},{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116126895\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Detroit Diesel SPN 3713 FMI 18 \u2013 DPF Soot Load Critical (Meaning, Causes &amp; Fix)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#website\",\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/\",\"name\":\"4RoadService Resources\",\"description\":\"Tools, Repairs &amp; Resources for Truck Drivers\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#organization\",\"name\":\"4RoadService.com\",\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/blog.4roadservice.com\\\/wp-content\\\/uploads\\\/2015\\\/08\\\/logo-sidebar@2x.png\",\"contentUrl\":\"https:\\\/\\\/blog.4roadservice.com\\\/wp-content\\\/uploads\\\/2015\\\/08\\\/logo-sidebar@2x.png\",\"width\":380,\"height\":64,\"caption\":\"4RoadService.com\"},\"image\":{\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/4roadservice\",\"https:\\\/\\\/x.com\\\/4RoadService\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116125473\",\"position\":1,\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116125473\",\"name\":\"What does Detroit Diesel SPN 3713 FMI 18 mean?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It means the DPF soot load has reached a critical level that requires immediate action. This is more severe than the FMI 16 warning and indicates the regeneration process has not kept up with soot accumulation.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116128215\",\"position\":2,\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116128215\",\"name\":\"What causes SPN 3713 FMI 18?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most commonly this fault develops when the FMI 16 warning was not addressed in time. Other causes include failed regeneration attempts, a severely clogged DPF, or engine issues causing excessive soot production.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127830\",\"position\":3,\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127830\",\"name\":\"Can I keep driving with SPN 3713 FMI 18?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Not recommended. The engine is in active derate and continued operation risks permanent DPF damage and increased exhaust back pressure that can harm the engine.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127431\",\"position\":4,\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116127431\",\"name\":\"Will SPN 3713 FMI 18 cause a derate?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. This is a severe derate triggering fault and power and speed will be significantly restricted until the soot load is reduced.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116126895\",\"position\":5,\"url\":\"https:\\\/\\\/www.4roadservice.com\\\/resources\\\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\\\/#faq-question-1774116126895\",\"name\":\"How do I clear SPN 3713 FMI 18?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Attempt a parked regeneration immediately. If unsuccessful seek professional service for a forced regen using diagnostic software. If the DPF is too severely clogged it may require removal for cleaning or replacement before the code will clear.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"SPN 3713 FMI 18 \u2013 DPF Soot Load Critical","description":"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.","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.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/","og_locale":"en_US","og_type":"article","og_title":"SPN 3713 FMI 18 \u2013 DPF Soot Load Critical","og_description":"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.","og_url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/","og_site_name":"4RoadService Resources","article_publisher":"https:\/\/www.facebook.com\/4roadservice","article_modified_time":"2026-03-21T18:08:23+00:00","og_image":[{"width":380,"height":64,"url":"https:\/\/www.4roadservice.com\/resources\/wp-content\/uploads\/2015\/08\/logo-sidebar@2x.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_site":"@4RoadService","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","FAQPage"],"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/","url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/","name":"SPN 3713 FMI 18 \u2013 DPF Soot Load Critical","isPartOf":{"@id":"https:\/\/www.4roadservice.com\/resources\/#website"},"datePublished":"2026-03-21T18:08:20+00:00","dateModified":"2026-03-21T18:08:23+00:00","description":"Detroit Diesel SPN 3713 FMI 18 means DPF soot load is at a critical level. Learn symptoms, causes, derate risk and how to fix it.","breadcrumb":{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116125473"},{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116128215"},{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127830"},{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127431"},{"@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116126895"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.4roadservice.com\/resources\/"},{"@type":"ListItem","position":2,"name":"Detroit Diesel SPN 3713 FMI 18 \u2013 DPF Soot Load Critical (Meaning, Causes &amp; Fix)"}]},{"@type":"WebSite","@id":"https:\/\/www.4roadservice.com\/resources\/#website","url":"https:\/\/www.4roadservice.com\/resources\/","name":"4RoadService Resources","description":"Tools, Repairs &amp; Resources for Truck Drivers","publisher":{"@id":"https:\/\/www.4roadservice.com\/resources\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.4roadservice.com\/resources\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.4roadservice.com\/resources\/#organization","name":"4RoadService.com","url":"https:\/\/www.4roadservice.com\/resources\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.4roadservice.com\/resources\/#\/schema\/logo\/image\/","url":"https:\/\/blog.4roadservice.com\/wp-content\/uploads\/2015\/08\/logo-sidebar@2x.png","contentUrl":"https:\/\/blog.4roadservice.com\/wp-content\/uploads\/2015\/08\/logo-sidebar@2x.png","width":380,"height":64,"caption":"4RoadService.com"},"image":{"@id":"https:\/\/www.4roadservice.com\/resources\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/4roadservice","https:\/\/x.com\/4RoadService"]},{"@type":"Question","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116125473","position":1,"url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116125473","name":"What does Detroit Diesel SPN 3713 FMI 18 mean?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It means the DPF soot load has reached a critical level that requires immediate action. This is more severe than the FMI 16 warning and indicates the regeneration process has not kept up with soot accumulation.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116128215","position":2,"url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116128215","name":"What causes SPN 3713 FMI 18?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Most commonly this fault develops when the FMI 16 warning was not addressed in time. Other causes include failed regeneration attempts, a severely clogged DPF, or engine issues causing excessive soot production.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127830","position":3,"url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127830","name":"Can I keep driving with SPN 3713 FMI 18?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Not recommended. The engine is in active derate and continued operation risks permanent DPF damage and increased exhaust back pressure that can harm the engine.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127431","position":4,"url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116127431","name":"Will SPN 3713 FMI 18 cause a derate?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes. This is a severe derate triggering fault and power and speed will be significantly restricted until the soot load is reduced.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116126895","position":5,"url":"https:\/\/www.4roadservice.com\/resources\/detroit-diesel-spn-3713-fmi-18-dpf-soot-load-critical\/#faq-question-1774116126895","name":"How do I clear SPN 3713 FMI 18?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Attempt a parked regeneration immediately. If unsuccessful seek professional service for a forced regen using diagnostic software. If the DPF is too severely clogged it may require removal for cleaning or replacement before the code will clear.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P6wicq-ep","_links":{"self":[{"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/pages\/893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/comments?post=893"}],"version-history":[{"count":6,"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/pages\/893\/revisions"}],"predecessor-version":[{"id":899,"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/pages\/893\/revisions\/899"}],"wp:attachment":[{"href":"https:\/\/www.4roadservice.com\/resources\/wp-json\/wp\/v2\/media?parent=893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}