{"id":77820,"date":"2025-08-27T10:22:36","date_gmt":"2025-08-27T15:22:36","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=77820"},"modified":"2025-08-27T10:22:36","modified_gmt":"2025-08-27T15:22:36","slug":"p0520-obd2-engine-oil-pressure-sensor-switch-circuit","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p0520-obd2-engine-oil-pressure-sensor-switch-circuit","title":{"rendered":"P0520 OBD2: Engine Oil Pressure Sensor\/Switch Circuit"},"content":{"rendered":"<p>The P0520 OBD-II trouble code indicates a problem with the engine oil pressure sensor or its circuit. This code is crucial because it directly pertains to the health of your engine&#8217;s lubrication system.<\/p>\n<h2>What Does the P0520 Code Mean?<\/h2>\n<p>The P0520 code signifies that the Engine Control Module (ECM) has detected an issue with the Engine Oil Pressure Sensor. This sensor is responsible for monitoring the engine&#8217;s oil pressure and sending that information to the ECM. When the ECM receives a signal that is out of the expected range, it triggers the P0520 code.<\/p>\n<h2>What Causes the P0520 Code?<\/h2>\n<p>Several factors can lead to the P0520 code being set, including:<\/p>\n<ul>\n<li>Engine oil pressure sensor failure<\/li>\n<li>Powertrain Control Module (PCM) failure<\/li>\n<li>Wiring issues within the sensor circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P0520 Code?<\/h2>\n<p>When the P0520 code is triggered, you may observe the following symptoms:<\/p>\n<ul>\n<li>Illumination of the oil pressure warning light on the dashboard<\/li>\n<li>Possible decrease in engine performance<\/li>\n<li>Unusual engine noises due to inadequate lubrication<\/li>\n<\/ul>\n<h2>How Serious Is the P0520 Code?<\/h2>\n<p>The P0520 code is considered urgent, as it indicates a significant issue that could lead to severe engine damage if not addressed promptly. Low oil pressure can result in catastrophic engine failure, so immediate action is recommended.<\/p>\n<h2>How to Diagnose the P0520 Code<\/h2>\n<p>To diagnose the P0520 code, follow these steps:<\/p>\n<ul>\n<li>Check the vehicle&#8217;s oil level and condition. Low or dirty oil can affect pressure readings.<\/li>\n<li>Inspect the wiring and connectors associated with the oil pressure sensor for damage or corrosion.<\/li>\n<li>Use an OBD-II scanner to confirm the presence of the P0520 code and check for any related codes.<\/li>\n<li>Test the oil pressure with a mechanical gauge to verify the actual oil pressure against the sensor&#8217;s readings.<\/li>\n<li>If necessary, replace the oil pressure sensor and retest the system.<\/li>\n<\/ul>\n<h2>Common Repairs for the P0520 Code<\/h2>\n<p>The most common repairs for the P0520 code include:<\/p>\n<ul>\n<li>Replacing the oil pressure sensor<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Replacing the Powertrain Control Module (if it is confirmed to be faulty)<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P0520 Code?<\/h2>\n<p>The cost to repair a P0520 code can vary widely depending on the specific issue and labor costs in your area. On average, you can expect to pay between $100 and $300 for sensor replacement, while wiring repairs may cost more depending on the extent of the damage.<\/p>\n<h2>Can I Fix the P0520 Code Myself?<\/h2>\n<p>If you have basic automotive knowledge and the right tools, you may be able to address the P0520 code yourself. Replacing the oil pressure sensor is a relatively straightforward task for someone with mechanical skills. However, if the issue is more complex, such as wiring problems or PCM failure, it may be wise to consult a professional mechanic to avoid further damage.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P0520 OBD-II trouble code indicates a problem with the engine oil pressure sensor or its circuit. This code is crucial because it directly pertains to the health of your engine&#8217;s lubrication system. What Does the P0520 Code Mean? The P0520 code signifies that the Engine Control Module (ECM) has detected an issue with the &hellip;<\/p>\n","protected":false},"author":26,"featured_media":94269,"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-77820","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 v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>OBD2 Code P0520 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P0520 code, what causes engine oil pressure sensor\/switch circuit issues, and how to diagnose and fix common problems 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\/p0520-obd2-engine-oil-pressure-sensor-switch-circuit\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P0520 OBD2: Engine Oil Pressure Sensor\/Switch Circuit\" \/>\n<meta property=\"og:description\" content=\"The P0520 OBD-II trouble code indicates a problem with the engine oil pressure sensor or its circuit. This code is crucial because it directly pertains to\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p0520-obd2-engine-oil-pressure-sensor-switch-circuit\" \/>\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=\"2025-08-27T15:22:36+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit.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\" 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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\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/08\/p0520-obd2-engine-oil-pressure-sensorswitch-circuit-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":"The P0520 OBD-II trouble code indicates a problem with the engine oil pressure sensor or its circuit. This code is crucial because it directly pertains to the health of your engine&#8217;s lubrication system. What Does the P0520 Code Mean? The P0520 code signifies that the Engine Control Module (ECM) has detected an issue with the&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77820","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/comments?post=77820"}],"version-history":[{"count":1,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77820\/revisions"}],"predecessor-version":[{"id":84519,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/77820\/revisions\/84519"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/94269"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=77820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=77820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=77820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}