{"id":79607,"date":"2025-06-09T14:12:35","date_gmt":"2025-06-09T19:12:35","guid":{"rendered":"https:\/\/www.emanualonline.com\/blog\/?p=79607"},"modified":"2025-09-15T22:24:20","modified_gmt":"2025-09-16T03:24:20","slug":"p2255-obd2-o2-sensor-negative-current-control-circuit-low","status":"publish","type":"post","link":"https:\/\/www.emanualonline.com\/blog\/p2255-obd2-o2-sensor-negative-current-control-circuit-low","title":{"rendered":"P2255 OBD2: O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1)"},"content":{"rendered":"<p>The P2255 code indicates an issue with the oxygen sensor&#8217;s negative current control circuit. This problem can affect the vehicle&#8217;s emissions and fuel efficiency, requiring attention from a qualified technician.<\/p>\n<h2>What Does the P2255 Code Mean?<\/h2>\n<p>The P2255 code is set when the Powertrain Control Module (PCM) detects a low voltage in the O2 sensor negative current control circuit. This circuit is responsible for regulating the current through the oxygen sensor, which plays a vital role in monitoring the oxygen levels in the exhaust gases.<\/p>\n<h2>What Causes the P2255 Code?<\/h2>\n<p>Several factors can trigger the P2255 code, including:<\/p>\n<ul>\n<li>Exhaust leaks that can interfere with sensor readings<\/li>\n<li>Failure of the oxygen sensor itself<\/li>\n<li>Issues with the Powertrain Control Module (PCM)<\/li>\n<li>Wiring issues or shorts in the circuit<\/li>\n<\/ul>\n<h2>What Are the Symptoms of the P2255 Code?<\/h2>\n<p>Drivers may notice several symptoms when the P2255 code is present, such as:<\/p>\n<ul>\n<li>Decreased engine performance<\/li>\n<li>Increased fuel consumption<\/li>\n<\/ul>\n<h2>How Serious Is the P2255 Code?<\/h2>\n<p>The severity of the P2255 code is considered moderate. While it may not pose an immediate threat to vehicle safety or functionality, it is important to diagnose and address the issue promptly to prevent further damage and maintain optimal performance.<\/p>\n<h2>How to Diagnose the P2255 Code<\/h2>\n<p>A proper diagnosis of the P2255 code involves:<\/p>\n<ul>\n<li>Using an OBD-II scanner to confirm the code<\/li>\n<li>Inspecting the wiring and connectors related to the oxygen sensor<\/li>\n<li>Checking for exhaust leaks that could affect sensor performance<\/li>\n<li>Testing the oxygen sensor and PCM for functionality<\/li>\n<\/ul>\n<h2>Common Repairs for the P2255 Code<\/h2>\n<p>Common repairs that may be required to resolve the P2255 code include:<\/p>\n<ul>\n<li>Replacing the oxygen sensor<\/li>\n<li>Repairing or replacing damaged wiring or connectors<\/li>\n<li>Addressing any exhaust leaks<\/li>\n<li>Replacing the PCM if it is found to be faulty<\/li>\n<\/ul>\n<h2>How Much Does It Cost to Fix the P2255 Code?<\/h2>\n<p>The cost to fix the P2255 code can vary significantly based on the underlying cause. Simple repairs like replacing the oxygen sensor may cost between $100 and $300, while more complex issues involving the PCM or extensive wiring repairs could range from $500 to $1,200.<\/p>\n<h2>Can I Fix the P2255 Code Myself?<\/h2>\n<p>If you have experience with automotive repairs, you may be able to diagnose and fix the P2255 code yourself, particularly if it involves replacing the oxygen sensor or addressing wiring issues. However, for more complex diagnostics or repairs, it is advisable to consult with a professional mechanic to ensure the problem is resolved correctly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The P2255 code indicates an issue with the oxygen sensor&#8217;s negative current control circuit. This problem can affect the vehicle&#8217;s emissions and fuel efficiency, requiring attention from a qualified technician. What Does the P2255 Code Mean? The P2255 code is set when the Powertrain Control Module (PCM) detects a low voltage in the O2 sensor &hellip;<\/p>\n","protected":false},"author":26,"featured_media":88318,"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-79607","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 P2255 \u2013 Causes, Symptoms, and Repairs<\/title>\n<meta name=\"description\" content=\"Learn all about the P2255 code, what causes O2 sensor negative current control circuit low, 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\/p2255-obd2-o2-sensor-negative-current-control-circuit-low\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"P2255 OBD2: O2 Sensor Negative Current Control Circuit Low (Bank 2 Sensor 1)\" \/>\n<meta property=\"og:description\" content=\"The P2255 code indicates an issue with the oxygen sensor&#039;s negative current control circuit. This problem can affect the vehicle&#039;s emissions and fuel\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.emanualonline.com\/blog\/p2255-obd2-o2-sensor-negative-current-control-circuit-low\" \/>\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=\"2025-06-09T19:12:35+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-16T03:24:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low.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 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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\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low.png",1200,675,false],"thumbnail":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-150x150.png",150,150,true],"medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-300x169.png",300,169,true],"medium_large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-768x432.png",618,348,true],"large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-1024x576.png",618,348,true],"1536x1536":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low.png",1200,675,false],"2048x2048":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low.png",1200,675,false],"tie-small":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-110x75.png",110,75,true],"tie-medium":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-403x215.png",403,215,true],"tie-large":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-310x205.png",310,205,true],"slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-660x330.png",660,330,true],"big-slider":["https:\/\/www.emanualonline.com\/blog\/wp-content\/uploads\/2025\/06\/p2255-obd2-o2-sensor-negative-current-control-circuit-low-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 P2255 code indicates an issue with the oxygen sensor&#8217;s negative current control circuit. This problem can affect the vehicle&#8217;s emissions and fuel efficiency, requiring attention from a qualified technician. What Does the P2255 Code Mean? The P2255 code is set when the Powertrain Control Module (PCM) detects a low voltage in the O2 sensor&hellip;","_links":{"self":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79607","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=79607"}],"version-history":[{"count":2,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79607\/revisions"}],"predecessor-version":[{"id":96544,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/posts\/79607\/revisions\/96544"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media\/88318"}],"wp:attachment":[{"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/media?parent=79607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/categories?post=79607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.emanualonline.com\/blog\/wp-json\/wp\/v2\/tags?post=79607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}