{"id":517340,"date":"2025-12-10T02:32:25","date_gmt":"2025-12-10T07:32:25","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/"},"modified":"2025-12-10T02:32:25","modified_gmt":"2025-12-10T07:32:25","slug":"dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/","title":{"rendered":"P0189 Code Symptoms, Causes, Diagnosis &#038; Comprehensive Repair Steps"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">P0189<\/div>\n<h1>P0189 Code Symptoms, Causes, Diagnosis &amp; Comprehensive Repair Steps<\/h1>\n<p class=\"hero-subtitle\">\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>Check Engine light stays on, often steady, with no flashing codes. <\/li>\n<li>Rough idle, hesitation on acceleration, or a noticeable drop in fuel\u2011economy are common complaints. <\/li>\n<li>The ECM detects erratic voltage from the secondary fuel\u2011temperature sensor (Sensor B). <\/li>\n<li>Primary fixes involve ECM communication testing, possible re\u2011programming, or replacement of the ECM. <\/li>\n<li>Flagship One provides VIN\u2011matched, pre\u2011programmed ECMs that plug in and run without dealer delays. <\/li>\n<\/ul>\n<\/div>\n<h3>Introduction <\/h3>\n<p>Drivers who see a solid \u201cCheck Engine\u201d illumination and notice a rough\u2011idle or a sudden loss of mileage are likely dealing with a P0189 fault. The code reads <strong>Fuel Temperature Sensor B Circuit Intermittent<\/strong>, meaning the engine control module (ECM) is receiving irregular voltage from the secondary fuel\u2011temperature sensor. Because the ECM uses fuel\u2011temperature data to calculate the correct fuel\u2011air mixture, any interruption can cause the engine to run lean or rich for short periods. Early identification is critical; prolonged intermittent data can lead to poor combustion, increased emissions, and accelerated wear on the catalytic converter. Understanding what you\u2019re hearing, why the ECM may be confused, and how to isolate the problem will save time and money.<\/p>\n<h2>Symptoms <\/h2>\n<ul>\n<li><strong>Steady Check Engine light<\/strong> \u2013 the PCM stores P0189 and often no additional codes appear. <\/li>\n<li><strong>Rough or uneven idle<\/strong> \u2013 the engine may stumble at 600\u2013800 rpm until the sensor voltage stabilizes. <\/li>\n<li><strong>Hesitation or stumble on acceleration<\/strong> \u2013 a momentary lean condition can cause a noticeable lag when you press the throttle. <\/li>\n<li><strong>Reduced fuel\u2011economy<\/strong> \u2013 intermittent lean\u2011rich cycling forces the ECM to enrich the mixture, raising fuel consumption by 2\u20115 %. <\/li>\n<li><strong>Transient loss of power<\/strong> \u2013 in extreme cases the ECM may enter a limp\u2011mode for a few seconds while it re\u2011learns sensor data. <\/li>\n<\/ul>\n<p>These signs appear sporadically because the fault is \u201cintermittent.\u201d The ECM may record a valid reading one moment, then flag a voltage drop the next, causing the code to set and clear repeatedly.<\/p>\n<h2>Why This Happens <\/h2>\n<h3>Faulty Wiring or Connectors <\/h3>\n<p>Corrosion, chafed harnesses, or loose pins in the sensor\u2011B circuit create resistance spikes that the ECM interprets as intermittent voltage. Heat\u2011related expansion can open a connection only when the engine bay reaches operating temperature, which explains why the fault sometimes appears after a warm\u2011up period.<\/p>\n<h3>Sensor B Failure <\/h3>\n<p>The secondary fuel\u2011temperature sensor can develop internal short\u2011circuits or open\u2011circuit conditions. While the sensor itself is a component, the ECM\u2019s ability to tolerate a faulty input is limited. A sensor that intermittently drops below the required 0.5 V or spikes above 5 V will trigger P0189.<\/p>\n<h3>ECM Input\u2011Circuit Degradation <\/h3>\n<p>Inside the ECM, the analog front\u2011end that conditions the sensor voltage can develop cracked solder joints or moisture intrusion. When the conditioning circuit can no longer maintain a stable reference, the module registers an intermittent condition even if the sensor and wiring are sound.<\/p>\n<h3>Software Glitch or Calibration Drift <\/h3>\n<p>Older ECM calibrations sometimes misinterpret legitimate sensor fluctuations as faults, especially after a software update or after the vehicle has logged numerous adaptations. A corrupted calibration table can cause the module to flag a healthy sensor as intermittent.<\/p>\n<h2>Diagnostic and Repair Procedures <\/h2>\n<ol>\n<li><strong>Retrieve the Code and Freeze\u2011Frame Data<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Connect a professional OBD\u2011II scanner. Record the exact voltage range the ECM reports for Sensor B (usually 0.5\u20135 V). Note engine load, coolant temperature, and fuel\u2011trim values at the moment of the fault.<\/p>\n<ol>\n<li><strong>Visual Inspection of Wiring Harness<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Trace the sensor\u2011B harness from the fuel rail to the ECM. Look for cracked insulation, corrosion, or loose connectors. Repair any damaged sections with heat\u2011shrink tubing and proper crimp connectors.<\/p>\n<ol>\n<li><strong>Sensor Voltage Test<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; With the ignition on, measure sensor voltage at the connector using a multimeter. Compare the reading to the manufacturer\u2019s specification (typically 0.5 V at cold start, rising to ~4.5 V at 100 \u00b0C). Record any rapid fluctuations while the engine runs.<\/p>\n<ol>\n<li><strong>ECM Input\u2011Circuit Test<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Many advanced scan tools can command a \u201csensor simulation\u201d mode. Force a stable voltage into the ECM\u2019s Sensor B input (e.g., 2.5 V). If the Check Engine light clears and no P0189 returns, the ECM\u2019s front\u2011end is likely functional. If the code reappears, the internal circuit may be compromised.<\/p>\n<ol>\n<li><strong>Software Verification<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Use the manufacturer\u2019s diagnostic software to read the ECM calibration version. Compare it to the latest release on the service information portal. If an update is available, apply the latest calibration; this often resolves intermittent sensor\u2011reading errors.<\/p>\n<ol>\n<li><strong>Re\u2011programming the ECM<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; When the ECM passes hardware tests but continues to log P0189, re\u2011flash the module with the current software package. Re\u2011programming costs typically range from $200\u2011$300 in labor, plus any required re\u2011calibration of fuel trims.<\/p>\n<ol>\n<li><strong>Module Replacement<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; If the ECM fails the input\u2011circuit test or the sensor\u2011simulation step, replacement is the most reliable remedy. A new ECM, pre\u2011programmed to the vehicle\u2019s VIN, usually costs $600\u2011$900 plus $200\u2011$300 labor. Proper VIN matching ensures the immobilizer, emissions, and transmission interfaces function correctly.<\/p>\n<p><strong>Note:<\/strong> While a faulty fuel\u2011temperature sensor B could be the origin, the ECM\u2019s ability to interpret that signal is often the limiting factor. A thorough module\u2011communication test will determine whether a sensor repair or an ECM replacement is required.<\/p>\n<h2>When Replacement Makes Sense <\/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>When the ECM\u2019s analog front\u2011end shows signs of internal damage\u2014cracked solder joints, moisture intrusion, or repeated failure after re\u2011programming\u2014repair attempts become temporary fixes. Replacing the module eliminates the risk of recurring intermittent readings and restores full compatibility with the vehicle\u2019s security and emissions systems.<\/p>\n<p><strong>Flagship One specializes in VIN\u2011matched control modules, providing a plug\u2011and\u2011drive solution backed by warranty. Modern control modules are complex and integrated with security and immobilizer systems. That&#8217;s why choosing a replacement isn\u2019t only about the hardware\u2014it&#8217;s about correct programming and compatibility. Flagship One\u2019s pre\u2011programmed units arrive ready for installation, reducing downtime and ensuring the module communicates flawlessly with all vehicle networks.<\/strong> <\/p>\n<h2>Preventive Maintenance <\/h2>\n<ul>\n<li><strong>Inspect wiring harnesses<\/strong> during routine under\u2011hood checks. Replace any frayed or corroded bundles before they cause intermittent voltage drops. <\/li>\n<li><strong>Keep the engine bay clean and dry.<\/strong> Moisture is a common culprit for ECM input\u2011circuit degradation; use dielectric grease on sensor connectors where recommended. <\/li>\n<li><strong>Schedule software updates<\/strong> at manufacturer\u2011recommended intervals. A current calibration reduces the chance of false intermittent readings. <\/li>\n<li><strong>Monitor fuel\u2011trim data<\/strong> during regular OBD scans. Gradual drift in short\u2011term fuel trim may indicate a degrading sensor circuit before the code appears. <\/li>\n<li><strong>Avoid harsh electrical loads<\/strong> (e.g., aftermarket accessories) that can introduce voltage spikes into the vehicle\u2019s communication bus, potentially stressing the ECM\u2019s sensor inputs.<\/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>Intermittent fuel-temp sensor B fault triggers warning on your vehicle \u2014 risking fuel\u2011mix errors. Scan, test the sensor circuit, and reprogram, replace.<\/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-517340","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>P0189 Code Symptoms, Causes, Diagnosis &amp; Comprehensive Repair Steps - 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-p0189-fuel-temperature-sensor-b-circuit-intermittent\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0189 Code Symptoms, Causes, Diagnosis &amp; Comprehensive Repair Steps - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Intermittent fuel-temp sensor B fault triggers warning on your vehicle \u2014 risking fuel\u2011mix errors. Scan, test the sensor circuit, and reprogram, replace.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/\" \/>\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=\"2025-12-10T07:32:25+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=\"6 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-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"P0189 Code Symptoms, Causes, Diagnosis &#038; Comprehensive Repair Steps\",\"datePublished\":\"2025-12-10T07:32:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/\"},\"wordCount\":1179,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#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-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/\",\"name\":\"P0189 Code Symptoms, Causes, Diagnosis & Comprehensive Repair Steps - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"datePublished\":\"2025-12-10T07:32:25+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#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-p0189-fuel-temperature-sensor-b-circuit-intermittent\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P0189 Code Symptoms, Causes, Diagnosis &#038; Comprehensive Repair Steps\"}]},{\"@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":"P0189 Code Symptoms, Causes, Diagnosis & Comprehensive Repair Steps - 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-p0189-fuel-temperature-sensor-b-circuit-intermittent\/","og_locale":"en_US","og_type":"article","og_title":"P0189 Code Symptoms, Causes, Diagnosis & Comprehensive Repair Steps - Flagship One Blog","og_description":"Intermittent fuel-temp sensor B fault triggers warning on your vehicle \u2014 risking fuel\u2011mix errors. Scan, test the sensor circuit, and reprogram, replace.","og_url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2025-12-10T07:32:25+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":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"P0189 Code Symptoms, Causes, Diagnosis &#038; Comprehensive Repair Steps","datePublished":"2025-12-10T07:32:25+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/"},"wordCount":1179,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#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-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/","url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/","name":"P0189 Code Symptoms, Causes, Diagnosis & Comprehensive Repair Steps - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","datePublished":"2025-12-10T07:32:25+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#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-p0189-fuel-temperature-sensor-b-circuit-intermittent\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P0189 Code Symptoms, Causes, Diagnosis &#038; Comprehensive Repair Steps"}]},{"@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\/517340","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=517340"}],"version-history":[{"count":0,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/517340\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=517340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=517340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=517340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}