{"id":517476,"date":"2025-12-10T04:29:38","date_gmt":"2025-12-10T09:29:38","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/"},"modified":"2025-12-10T04:29:38","modified_gmt":"2025-12-10T09:29:38","slug":"dtc-p0325-knockcombustion-vibration-sensor-circuit","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/","title":{"rendered":"P0325 Code Symptoms, Causes, Diagnosis &#038; Repair Procedures Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">P0325<\/div>\n<h1>P0325 Code Symptoms, Causes, Diagnosis &amp; Repair Procedures Guide<\/h1>\n<p class=\"hero-subtitle\">\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>P0325 indicates a fault in the Knock\/Combustion Vibration Sensor A circuit. <\/li>\n<li>Typical driver\u2011visible signs: check\u2011engine light, rough idle, hesitation, loss of power, occasional misfire, or limp\u2011mode entry. <\/li>\n<li>Most failures originate from sensor wiring, the sensor itself, or the ECU\u2019s knock\u2011sensor input circuit. <\/li>\n<li>Diagnosis starts with a full scan, visual wiring inspection, and ECU communication testing; a functional\u2011test scan isolates the defective node. <\/li>\n<li>When the ECU\u2019s knock\u2011sensor input board is damaged, replacement and VIN\u2011matched programming from Flagship One provides a reliable, warranty\u2011backed solution. <\/li>\n<\/ul>\n<\/div>\n<p>Drivers first notice the check\u2011engine illumination. In many cases the light flashes, indicating a severe condition, but a steady illumination is also common. Along with the warning, owners report one or more of the following performance changes: <\/p>\n<ul>\n<li><strong>Rough or uneven idle<\/strong> \u2013 the engine may shake or stall at low RPMs. <\/li>\n<li><strong>Throttle hesitation<\/strong> \u2013 acceleration feels delayed or \u201cflat\u201d when the pedal is pressed. <\/li>\n<li><strong>Reduced power<\/strong> \u2013 noticeable loss of horsepower, especially under load or during hill climbs. <\/li>\n<li><strong>Intermittent misfire<\/strong> \u2013 a brief stumble that may disappear after a few seconds. <\/li>\n<li><strong>Limp\u2011mode activation<\/strong> \u2013 the ECU limits RPM and torque to protect the engine, resulting in a capped speed (often around 45 mph). <\/li>\n<\/ul>\n<p>These symptoms arise because the ECU cannot trust the vibration data it receives from the knock sensor, so it defaults to conservative timing and fuel maps to avoid engine damage.<\/p>\n<h2>Why Knock Sensor Circuit Problems Occur <\/h2>\n<h3>1. Faulty Sensor Wiring or Connectors <\/h3>\n<p>Corrosion, broken strands, or loose pins in the sensor harness interrupt the low\u2011level signal the ECU expects (typically a few millivolts). An open circuit triggers P0325 instantly; a short to ground or voltage spikes produce intermittent codes.<\/p>\n<h3>2. Defective Knock Sensor A Itself <\/h3>\n<p>The piezoelectric element inside the sensor can crack or lose sensitivity after prolonged exposure to heat and vibration. A sensor that outputs erratic voltage will cause the ECU to flag a circuit fault.<\/p>\n<h3>3. ECU Input\u2011Circuit Failure <\/h3>\n<p>The ECU\u2019s front\u2011end board that conditions the sensor signal may develop internal cracks, moisture ingress, or solder joint fatigue. When the conditioning circuit can\u2019t amplify or filter the sensor output, the ECU records an open\/short condition.<\/p>\n<h3>4. Software or Calibration Glitch <\/h3>\n<p>Occasionally an outdated or corrupted ECU calibration file misinterprets a normal sensor voltage range as a fault. Re\u2011flashing the module restores the correct thresholds.<\/p>\n<h3>5. Ground or Power Supply Issues Affecting the ECU <\/h3>\n<p>A weak chassis ground or a voltage drop on the ECU\u2019s supply rail can make the knock\u2011sensor input appear unstable, prompting the P0325 code even though the sensor and wiring are sound.<\/p>\n<h2>Diagnostic and Repair Procedures <\/h2>\n<ol>\n<li><strong>Retrieve and Clear Codes<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Connect a professional OBD\u2011II scanner capable of live data and freeze\u2011frame capture. Record any additional codes; they may point to related circuits (e.g., P0335 for sensor B). Clear the code and perform a test drive to confirm recurrence.<\/p>\n<ol>\n<li><strong>Visual Wiring Inspection<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Locate the knock sensor (usually on the engine block near the cylinder head). Examine the connector for corrosion, broken pins, or damaged harness. Repair or replace the wiring harness segment if any defect is found.<\/p>\n<ol>\n<li><strong>Sensor Voltage Test<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; With the engine at idle, back\u2011probe the sensor\u2019s signal wire. A healthy sensor typically produces a low\u2011level AC voltage that rises with engine speed (\u22480.1 V at 600 rpm, 0.5 V at 3000 rpm). Values outside this range indicate a bad sensor.<\/p>\n<ol>\n<li><strong>ECU Input\u2011Circuit Check<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Use the scanner\u2019s \u201cECU self\u2011test\u201d function (if available) to command a sensor simulation. The ECU should report a valid voltage reading; a failure suggests the ECU\u2019s front\u2011end board is compromised.<\/p>\n<ol>\n<li><strong>Software Verification<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; Compare the ECU\u2019s calibration version against the manufacturer\u2019s latest release. If outdated, re\u2011flash the module using the vendor\u2019s official software. This step also verifies that the ECU\u2019s communication ports are functional.<\/p>\n<ol>\n<li><strong>Decision Point \u2013 Repair vs. Replace<\/strong>\n<\/li>\n<\/ol>\n<p> &#8211; If wiring or sensor is defective, replace the affected component and clear the code. <\/p>\n<p> &#8211; If the ECU\u2019s input circuit or software remains faulty after sensor and wiring verification, proceed to module replacement.<\/p>\n<p><strong>Cost Estimates<\/strong> <\/p>\n<ul>\n<li>Wiring repair or sensor replacement (parts only): $30\u2011$120. <\/li>\n<li>ECU re\u2011programming at a dealer: $150\u2011$250 labor plus possible software fees. <\/li>\n<li>Full ECU replacement (including VIN\u2011matched programming): $600\u2011$900 for the module plus $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 integrated with engine management, emissions, and security systems. A failure in the knock\u2011sensor input often signals internal board damage that cannot be reliably repaired in the field. Continuing to operate with a compromised ECU may lead to repeated faults, loss of power, and potential engine damage.<\/p>\n<p><strong>Flagship One specializes in VIN\u2011matched control modules, providing a plug\u2011and\u2011drive solution backed by warranty.<\/strong> Because the ECU must be precisely calibrated to your vehicle\u2019s immobilizer and emissions specifications, Flagship One\u2019s programming ensures correct communication with all vehicle networks. Replacement units are matched to the exact production date and software version of your vehicle, eliminating compatibility issues that can arise with generic aftermarket parts.<\/p>\n<h2>Preventive Maintenance <\/h2>\n<ul>\n<li><strong>Inspect the sensor and harness during regular service<\/strong> (every 30 000 mi). Look for oil leaks that can soak the sensor or wiring. <\/li>\n<li><strong>Maintain proper engine cooling<\/strong>; excessive heat accelerates sensor degradation and can damage ECU circuitry. <\/li>\n<li><strong>Use OEM\u2011type engine oil<\/strong> with the recommended viscosity; thick oil can increase engine vibration, stressing the sensor. <\/li>\n<li><strong>Periodically check the battery voltage<\/strong> (should be &gt;12.6 V at rest). Low voltage can cause erratic ECU behavior, including false knock\u2011sensor faults. <\/li>\n<li><strong>Update ECU software<\/strong> when the manufacturer releases a service bulletin. Staying current reduces the chance of calibration\u2011related false codes.<\/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>Knock sensor warning on your vehicle? P0325 means Combustion Vibration Sensor A circuit fault\u2014possible engine damage. Scan, test and repair the sensor now.<\/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-517476","post","type-post","status-publish","format-standard","hentry","category-auto-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>P0325 Code Symptoms, Causes, Diagnosis &amp; Repair Procedures Guide - 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-p0325-knockcombustion-vibration-sensor-circuit\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0325 Code Symptoms, Causes, Diagnosis &amp; Repair Procedures Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Knock sensor warning on your vehicle? P0325 means Combustion Vibration Sensor A circuit fault\u2014possible engine damage. Scan, test and repair the sensor now.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/\" \/>\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=\"2025-12-10T09:29:38+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-p0325-knockcombustion-vibration-sensor-circuit\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"P0325 Code Symptoms, Causes, Diagnosis &#038; Repair Procedures Guide\",\"datePublished\":\"2025-12-10T09:29:38+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/\"},\"wordCount\":1011,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/#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-p0325-knockcombustion-vibration-sensor-circuit\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/\",\"name\":\"P0325 Code Symptoms, Causes, Diagnosis & Repair Procedures Guide - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/12\\\/fs1inc_logo2-scaled.jpg\",\"datePublished\":\"2025-12-10T09:29:38+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/dtc-p0325-knockcombustion-vibration-sensor-circuit\\\/#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-p0325-knockcombustion-vibration-sensor-circuit\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"P0325 Code Symptoms, Causes, Diagnosis &#038; Repair Procedures Guide\"}]},{\"@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":"P0325 Code Symptoms, Causes, Diagnosis & Repair Procedures Guide - 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-p0325-knockcombustion-vibration-sensor-circuit\/","og_locale":"en_US","og_type":"article","og_title":"P0325 Code Symptoms, Causes, Diagnosis & Repair Procedures Guide - Flagship One Blog","og_description":"Knock sensor warning on your vehicle? P0325 means Combustion Vibration Sensor A circuit fault\u2014possible engine damage. Scan, test and repair the sensor now.","og_url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2025-12-10T09:29:38+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-p0325-knockcombustion-vibration-sensor-circuit\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"P0325 Code Symptoms, Causes, Diagnosis &#038; Repair Procedures Guide","datePublished":"2025-12-10T09:29:38+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/"},"wordCount":1011,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/#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-p0325-knockcombustion-vibration-sensor-circuit\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/","url":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/","name":"P0325 Code Symptoms, Causes, Diagnosis & Repair Procedures Guide - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2025\/12\/fs1inc_logo2-scaled.jpg","datePublished":"2025-12-10T09:29:38+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/dtc-p0325-knockcombustion-vibration-sensor-circuit\/#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-p0325-knockcombustion-vibration-sensor-circuit\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"P0325 Code Symptoms, Causes, Diagnosis &#038; Repair Procedures Guide"}]},{"@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\/517476","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=517476"}],"version-history":[{"count":0,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/517476\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=517476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=517476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=517476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}