{"id":517269,"date":"2025-12-10T01:21:55","date_gmt":"2025-12-10T06:21:55","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/"},"modified":"2025-12-10T01:21:55","modified_gmt":"2025-12-10T06:21:55","slug":"dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/","title":{"rendered":"P0118 Code Symptoms, Causes, Diagnosis &#038; Repair Cost Guide Overview"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">P0118<\/div>\n<h1>P0118 Code Symptoms, Causes, Diagnosis &amp; Repair Cost Guide Overview<\/h1>\n<p class=\"hero-subtitle\">\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>P0118 means the Engine Coolant Temperature (ECT) Sensor 1 circuit is reading a voltage higher than normal. <\/li>\n<li>Drivers usually see a coolant\u2011temperature warning light, rough start\u2011up or idle, and a drop in fuel efficiency. <\/li>\n<li>The most common origins are a shorted sensor, damaged wiring, or a control\u2011module communication fault. <\/li>\n<li>A proper diagnosis starts with a live data scan, wiring continuity check, and module communication test. <\/li>\n<li>When the control module is at fault, Flagship One provides VIN\u2011matched replacement units with pre\u2011programmed software. <\/li>\n<\/ul>\n<\/div>\n<p>Drivers often first notice the check\u2011engine light flashing or a coolant\u2011temperature warning lamp illuminating while the engine is still cold. The vehicle may hesitate to start, idle roughly, or show a noticeable decline in fuel economy. These signs appear because the power\u2011train control module (PCM\/ECU) is receiving an implausibly high voltage from the Engine Coolant Temperature Sensor 1 circuit. Early identification prevents the PCM from entering limp\u2011mode or from making fuel\u2011delivery decisions based on erroneous temperature data. <\/p>\n<h2>Symptoms <\/h2>\n<ul>\n<li><strong>Coolant\u2011temperature warning light<\/strong> stays on after the engine reaches operating temperature. <\/li>\n<li><strong>Hard start\u2011up<\/strong> or prolonged cranking, especially when the engine is cold. <\/li>\n<li><strong>Irregular idle<\/strong> \u2013 engine speed fluctuates or stalls at idle. <\/li>\n<li><strong>Reduced fuel efficiency<\/strong> of 5\u201110 % as the PCM enriches the mixture to compensate for a perceived cold engine. <\/li>\n<li><strong>Check\u2011engine light (P0118)<\/strong> stored and often accompanied by related codes such as P0116 (sensor circuit low) or P0125 (insufficient coolant temperature for catalyst). <\/li>\n<\/ul>\n<h2>Why This Happens <\/h2>\n<h3>Shorted or Open ECT Sensor 1 <\/h3>\n<p>The sensor is a thermistor that changes resistance with temperature. A short to voltage (typically 5 V) forces the PCM to read a voltage above the calibrated range, triggering P0118. An open circuit can produce a similar \u201chigh\u201d reading if the PCM interprets a floating line as maximum voltage. <\/p>\n<h3>Damaged Wiring or Connectors <\/h3>\n<p>Corrosion, chafed insulation, or a broken ground can create a high\u2011impedance path that lifts the sensor signal voltage. Heat\u2011induced expansion of connector pins may also cause intermittent shorts, leading to sporadic P0118 activation. <\/p>\n<h3>Control\u2011Module Communication Fault <\/h3>\n<p>The PCM\/ECU processes the sensor voltage through its analog\u2011to\u2011digital converter. Internal board damage, firmware corruption, or a failed voltage regulator can cause the module to misinterpret a normal sensor voltage as high. In such cases, the sensor and wiring may be healthy, but the module\u2019s ability to read the circuit is compromised. <\/p>\n<h3>Calibration or Software Issues <\/h3>\n<p>After a major service (e.g., coolant flush) or a recall, the PCM may require a calibration reset. If the software expects a different sensor reference voltage and the module is not re\u2011programmed, it can flag a high\u2011circuit condition. <\/p>\n<h2>Diagnostic and Repair Procedures <\/h2>\n<ol>\n<li><strong>Retrieve Freeze\u2011Frame Data<\/strong> \u2013 Use a scan tool to view the live sensor voltage. A normal ECT sensor should read 0.5 V (cold) to ~4.5 V (hot). Values above 5 V indicate a high\u2011circuit condition.\n<\/li>\n<li><strong>Visual Inspection<\/strong> \u2013 Check the sensor\u2019s connector for corrosion, bent pins, or broken housing. Inspect the wiring harness for cracks, exposed conductors, or signs of heat damage.\n<\/li>\n<li><strong>Continuity Test<\/strong> \u2013 With the ignition off, measure resistance between sensor terminals and ground. A short to 5 V will show near\u2011zero resistance to the power feed; an open circuit will show infinite resistance.\n<\/li>\n<li><strong>Wiring Resistance Check<\/strong> \u2013 Measure resistance from the sensor connector back to the PCM pin. Excessive resistance (&gt; 1 \u03a9) suggests a damaged wire or connector.\n<\/li>\n<li><strong>PCM Communication Test<\/strong> \u2013 Perform a module\u2011to\u2011module communication scan (CAN bus) to confirm the PCM is responding correctly to other sensor requests. A failure here points to the PCM rather than the sensor.\n<\/li>\n<li><strong>Module Re\u2011programming<\/strong> \u2013 If the PCM\u2019s firmware is outdated or corrupted, reflash the module with the latest manufacturer calibration. This step often resolves false high\u2011circuit readings after a coolant system service.\n<\/li>\n<li><strong>Module Repair vs. Replacement<\/strong> \u2013 Minor board issues (e.g., a blown voltage regulator) can sometimes be repaired by a qualified electronics specialist, but reliability is questionable. When the PCM shows internal faults or repeated communication errors, replacement is the safer route.\n<\/li>\n<\/ol>\n<p><strong>Cost Outlook<\/strong> <\/p>\n<ul>\n<li>Live data scan and wiring test: $80\u2011$120 labor. <\/li>\n<li>PCM re\u2011programming (factory tool): $120\u2011$180 plus software license fees if not already owned by the shop. <\/li>\n<li>PCM replacement (including VIN\u2011matched programming): $600\u2011$900 for the unit, $200\u2011$300 labor. <\/li>\n<\/ul>\n<h2>When Replacement Makes More Sense Than Repair <\/h2>\n<div class=\"flagship-logo-section\">\n<a href=\"https:\/\/www.fs1inc.com\/\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<img decoding=\"async\" alt=\"Flagship One\" class=\"flagship-logo\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\"\/><br \/>\n<\/a>\n<\/div>\n<p>Modern control modules are intricate assemblies that integrate power\u2011train management, emissions control, and vehicle security. A damaged analog\u2011to\u2011digital converter or compromised internal circuitry can cause intermittent high\u2011circuit readings that are not reliably fixed by board\u2011level repair. In such cases, installing a new, VIN\u2011matched module eliminates the risk of recurring faults and restores full communication with all vehicle networks. <\/p>\n<p>Flagship One specializes in VIN\u2011matched control modules, providing a plug\u2011and\u2011drive solution that includes pre\u2011programmed software calibrated to your vehicle\u2019s exact configuration. Each unit is backed by a comprehensive warranty, ensuring that the replacement not only resolves the P0118 condition but also maintains the integrity of the vehicle\u2019s security and emissions systems. <\/p>\n<h2>Preventive Maintenance <\/h2>\n<ul>\n<li><strong>Regular Coolant Service<\/strong> \u2013 Replace coolant at the manufacturer\u2011specified interval and use the correct type. Proper coolant chemistry reduces corrosion on sensor housings and wiring. <\/li>\n<li><strong>Connector Care<\/strong> \u2013 Apply dielectric grease to sensor connectors during service to prevent moisture ingress. <\/li>\n<li><strong>Wire Harness Inspection<\/strong> \u2013 During routine under\u2011hood checks, look for chafed bundles near moving components (e.g., fan shrouds) and protect them with zip ties or heat\u2011shield sleeves. <\/li>\n<li><strong>Software Updates<\/strong> \u2013 Keep the PCM firmware current by installing manufacturer service bulletins. Updated calibrations often address sensor\u2011reading anomalies. <\/li>\n<li><strong>Temperature Sensor Checks<\/strong> \u2013 When the engine is hot, verify that the coolant temperature warning lamp extinguishes. Persistent illumination should trigger an immediate scan.<\/li>\n<\/ul>\n<div class=\"info-section\">\n<p><strong>Service Recommendation:<\/strong> Most issues related to this fault are diagnosed and corrected through inspection, wiring repair, and calibration rather than module replacement. For modules not typically replaced through aftermarket suppliers, diagnosis and repair should be performed by a certified automotive technician with access to factory service information and tooling.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Engine overheating on your vehicle? P0118 means coolant\u2011temp sensor 1 circuit is high, risking false readings and engine control\u2014scan and replace sensor.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-517269","post","type-post","status-publish","format-standard","hentry","category-auto-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0118 Code Symptoms, Causes, Diagnosis &amp; Repair Cost Guide Overview - Flagship One Blog<\/title>\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.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0118 Code Symptoms, Causes, Diagnosis &amp; Repair Cost Guide Overview - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Engine overheating on your vehicle? P0118 means coolant\u2011temp sensor 1 circuit is high, risking false readings and engine control\u2014scan and replace sensor.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-10T06:21:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"P0118 Code Symptoms, Causes, Diagnosis &#038; Repair Cost Guide Overview\",\"datePublished\":\"2025-12-10T06:21:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/\"},\"wordCount\":1016,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"articleSection\":[\"Auto News\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/\",\"name\":\"P0118 Code Symptoms, Causes, Diagnosis & Repair Cost Guide Overview - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"datePublished\":\"2025-12-10T06:21:55+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"width\":2560,\"height\":617},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P0118 Code Symptoms, Causes, Diagnosis &#038; Repair Cost Guide Overview\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. OEM Engine Computers  Control Modules\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\",\"name\":\"Flagship One, Inc.\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"width\":1341,\"height\":1098,\"caption\":\"Flagship One, Inc.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/flagshipone\",\"https:\\\/\\\/x.com\\\/theflagshipone\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC0oyKphffBM2qkJ-gKPmMXw\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\",\"name\":\"FlagshipOne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"caption\":\"FlagshipOne\"},\"description\":\"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.\",\"sameAs\":[\"https:\\\/\\\/www.fs1inc.com\\\/\",\"https:\\\/\\\/www.facebook.com\\\/flagshipone\\\/\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/fs1inc\"],\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/author\\\/flagship1inc\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"P0118 Code Symptoms, Causes, Diagnosis & Repair Cost Guide Overview - Flagship One Blog","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.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/","og_locale":"en_US","og_type":"article","og_title":"P0118 Code Symptoms, Causes, Diagnosis & Repair Cost Guide Overview - Flagship One Blog","og_description":"Engine overheating on your vehicle? P0118 means coolant\u2011temp sensor 1 circuit is high, risking false readings and engine control\u2014scan and replace sensor.","og_url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2025-12-10T06:21:55+00:00","og_image":[{"url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","type":"","width":"","height":""}],"author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"P0118 Code Symptoms, Causes, Diagnosis &#038; Repair Cost Guide Overview","datePublished":"2025-12-10T06:21:55+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/"},"wordCount":1016,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","articleSection":["Auto News"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/","url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/","name":"P0118 Code Symptoms, Causes, Diagnosis & Repair Cost Guide Overview - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","datePublished":"2025-12-10T06:21:55+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#primaryimage","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","width":2560,"height":617},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0118-engine-coolant-temperature-sensor-1-circuit-high\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P0118 Code Symptoms, Causes, Diagnosis &#038; Repair Cost Guide Overview"}]},{"@type":"WebSite","@id":"https:\/\/www.fs1inc.com\/blog\/#website","url":"https:\/\/www.fs1inc.com\/blog\/","name":"Flagship One Blog","description":"Flagship One Inc. OEM Engine Computers  Control Modules","publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fs1inc.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fs1inc.com\/blog\/#organization","name":"Flagship One, Inc.","url":"https:\/\/www.fs1inc.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","width":1341,"height":1098,"caption":"Flagship One, Inc."},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/flagshipone","https:\/\/x.com\/theflagshipone","https:\/\/www.instagram.com\/flagship_one","https:\/\/www.youtube.com\/channel\/UC0oyKphffBM2qkJ-gKPmMXw"]},{"@type":"Person","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700","name":"FlagshipOne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","caption":"FlagshipOne"},"description":"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.","sameAs":["https:\/\/www.fs1inc.com\/","https:\/\/www.facebook.com\/flagshipone\/","https:\/\/www.instagram.com\/flagship_one\/","https:\/\/www.linkedin.com\/company\/fs1inc"],"url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/"}]}},"_links":{"self":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/517269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/comments?post=517269"}],"version-history":[{"count":0,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/517269\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=517269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=517269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=517269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}