{"id":77627,"date":"2025-08-31T15:59:32","date_gmt":"2025-08-31T20:59:32","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77627"},"modified":"2025-08-31T15:59:32","modified_gmt":"2025-08-31T20:59:32","slug":"p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses","title":{"rendered":"P0371 OBD2: Timing Reference High Resolution Signal &#8220;A&#8221; Too Many Pulses"},"content":{"rendered":"<h2>What Does the P0371 Code Mean?<\/h2>\n<p>The P0371 code indicates that the engine control module (PCM) has detected too many pulses from the Timing Reference High Resolution Signal &#8220;A.&#8221; This signal is crucial as it relates to the crankshaft position sensor (CKP) and is used to ensure that the engine runs smoothly and efficiently.<\/p>\n<h2>What Causes the P0371 Code?<\/h2>\n<p>The P0371 code can be triggered by several issues, including:<\/p>\n<ul>\n<li>Failure of the crankshaft position sensor (CKP)<\/li>\n<li>Failure of the fuel injection control module (FICM)<\/li>\n<li>Failure of the powertrain control module (PCM)<\/li>\n<li>Wiring issues, such as damaged or corroded wires or connectors<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0371 Code?<\/h2>\n<p>Drivers may notice the following symptoms when the P0371 code is present:<\/p>\n<ul>\n<li>Decreased engine performance<\/li>\n<li>Engine may not start<\/li>\n<li>Potential stalling or rough running<\/li>\n<\/ul>\n<h2>How Serious Is the P0371 Code?<\/h2>\n<p>The P0371 code is considered urgent as it indicates a significant malfunction that can lead to severe engine damage if not addressed promptly. Delaying repair could also compromise driver and passenger safety.<\/p>\n<h2>How to Diagnose the P0371 Code<\/h2>\n<p>To diagnose the P0371 code, a mechanic will typically follow these steps:<\/p>\n<ol>\n<li>Use an OBD-II scanner to confirm the P0371 code and check for any additional codes.<\/li>\n<li>Inspect wiring and connectors related to the CKP and FICM for any signs of damage or corrosion.<\/li>\n<li>Test the crankshaft position sensor (CKP) and fuel injection control module (FICM) to determine if they are functioning properly.<\/li>\n<li>Perform a thorough inspection of the powertrain control module (PCM) for faults.<\/li>\n<\/ol>\n<h2>Common Repairs for the P0371 Code<\/h2>\n<p>Repair options for the P0371 code may include:<\/p>\n<ul>\n<li>Replacing the crankshaft position sensor (CKP)<\/li>\n<li>Repairing or replacing the fuel injection control module (FICM)<\/li>\n<li>Fixing any wiring issues or damaged connectors<\/li>\n<li>Replacing the powertrain control module (PCM) if necessary<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0371 Code?<\/h2>\n<p>The cost to fix the P0371 code can vary widely depending on the root cause of the issue. On average, repairs can range from $100 to $1,000 or more, depending on whether it involves simple wiring repairs or more extensive component replacements.<\/p>\n<h2>Can I Fix the P0371 Code Myself?<\/h2>\n<p>While some DIY enthusiasts may feel comfortable diagnosing and repairing issues related to the P0371 code, it is essential to have a good understanding of automotive electronics and systems. Given the potential for severe engine damage and safety risks, consulting with a professional mechanic is recommended for most drivers.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does the P0371 Code Mean? The P0371 code indicates that the engine control module (PCM) has detected too many pulses from the Timing Reference High Resolution Signal &#8220;A.&#8221; This signal is crucial as it relates to the crankshaft position sensor (CKP) and is used to ensure that the engine runs smoothly and efficiently. What &hellip;<\/p>\n","protected":false},"author":26,"featured_media":94754,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_uag_custom_page_level_css":"","footnotes":""},"categories":[11987],"tags":[],"class_list":["post-77627","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-p-obd2-codes-powertrain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.6 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>OBD2 Code P0371 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0371 code, what causes Timing Reference High Resolution Signal &quot;A&quot; Too Many Pulses, and how to diagnose and fix common issues to maintain optimal engine performance.\" \/>\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.emanualonline.com\/blog\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0371 OBD2: Timing Reference High Resolution Signal &quot;A&quot; Too Many Pulses\" \/>\n<meta property=\"og:description\" content=\"What Does the P0371 Code Mean? The P0371 code indicates that the engine control module (PCM) has detected too many pulses from the Timing Reference High\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses\" \/>\n<meta property=\"og:site_name\" content=\"eManualOnline Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/EmanualOnline\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/jee514\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-31T20:59:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"JC Landry\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:site\" content=\"@eManualOnline\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"JC Landry\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.emanualonline.com\/blog\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses\"},\"author\":{\"name\":\"JC Landry\",\"@id\":\"https:\/\/www.emanualonline.com\/blog\/#\/schema\/person\/e803434ab3cc70008b22b56253223403\"},\"headline\":\"P0371 OBD2: Timing Reference High Resolution Signal &#8220;A&#8221; 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He also loves cats, Johnny Cash and Subarus.","sameAs":["https:\/\/www.facebook.com\/jee514","https:\/\/www.instagram.com\/rat_in_chief\/","https:\/\/www.linkedin.com\/in\/jean-claude-landry-857781186\/"],"url":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"}]}},"uagb_featured_image_src":{"full":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0371-obd2-timing-reference-high-resolution-signal-a-too-many-pulses-1050x525.png",1050,525,true]},"uagb_author_info":{"display_name":"JC Landry","author_link":"https:\/\/www.emanualonline.com\/blog\/author\/jclandry"},"uagb_comment_info":0,"uagb_excerpt":"What Does the P0371 Code Mean? The P0371 code indicates that the engine control module (PCM) has detected too many pulses from the Timing Reference High Resolution Signal &#8220;A.&#8221; This signal is crucial as it relates to the crankshaft position sensor (CKP) and is used to ensure that the engine runs smoothly and efficiently. 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