{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-civic-2016-2020-1-5l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Civic (2016-2020) 1.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream \u0026amp; Downstream O2 Sensor Kit for 2016-2020 Honda Civic (FC1\/FC3\/FK7)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Monitors pre- and post-catalyst exhaust oxygen on the 2016-2020 Honda Civic \u003cstrong\u003eFC1\/FC3\/FK7\u003c\/strong\u003e (\u003cstrong\u003eL15B7 1.5L Turbo\u003c\/strong\u003e) to regulate air-fuel stoichiometry and verify catalyst efficiency.\u003c\/p\u003e\n\u003ch3\u003eThe Stock Honda Civic Sensor Failure\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eFC1\/FC3\/FK7\u003c\/strong\u003e Civic with the direct-injected \u003cstrong\u003eL15B7 1.5L Turbo\u003c\/strong\u003e endure extreme exhaust heat and fuel dilution blow-by. Thermal cycling fractures the ceramic zirconia element while carbon soot poisons the platinum electrodes and slows voltage response. Internal heater circuits also suffer high-resistance failures, delaying closed-loop fueling and triggering \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP2A00\u003c\/strong\u003e codes.\u003c\/p\u003e\n\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e from open heater circuits or skewed lambda feedback.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSluggish Closed-Loop Response:\u003c\/strong\u003e Carbon-fouled tips cause erratic fuel trims and hesitation under boost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailed Emissions \u0026amp; MPG Drop:\u003c\/strong\u003e Rich fueling raises consumption and triggers \u003cstrong\u003eP0420\u003c\/strong\u003e faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Direct-Fit Matched O2 Sensor Solution\u003c\/h3\u003e\n\u003cp\u003eReplacing both sensors as a matched set restores accurate lambda feedback on your \u003cstrong\u003eL15B7 1.5L Turbo\u003c\/strong\u003e. The upstream unit (\u003cstrong\u003e234-5724\u003c\/strong\u003e) uses a fast-response planar element for precise air-fuel tracking under boost, while the downstream sensor (\u003cstrong\u003e234-8027\u003c\/strong\u003e) verifies catalyst oxygen storage. Corrosion-resistant stainless housings, laser-welded shields, and OEM-style weatherproof connectors thread directly into factory bungs without splicing.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1x Upstream Oxygen Sensor (\u003cstrong\u003e234-5724\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003e1x Downstream Oxygen Sensor (\u003cstrong\u003e234-8027\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2016-2020 Honda Civic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eL15B7 1.5L Turbo \/ FC1, FC3, FK7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEmissions \u0026amp; Sensor Spec\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eUpstream AFR \u0026amp; Downstream Heated Zirconia O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eInstallation Type\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect Bolt-On OEM Replacement (No Cutting or Welding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e234-5724, 234-8027, 36532-5AA-A01, 36532-5AA-A51, 365325AAA01, 365325AAA51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2016-2020 Honda Civic 1.5L (\u003cstrong\u003eL15B7\u003c\/strong\u003e) — Confirm engine before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the FC1\/FC3\/FK7 Civic?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Direct fit for 2016-2020 Honda Civic \u003cstrong\u003eL15B7 1.5L Turbo\u003c\/strong\u003e models. \u003cstrong\u003eExcludes 2.0L (K20C2) and Type R (K20C1) engines; confirm engine before ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eWill this clear P0135\/P0141 codes, and are both sensors included?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Includes both upstream (\u003cstrong\u003e234-5724\u003c\/strong\u003e) and downstream (\u003cstrong\u003e234-8027\u003c\/strong\u003e, replacing \u003cstrong\u003e36532-5AA-A01\u003c\/strong\u003e \/ \u003cstrong\u003e36532-5AA-A51\u003c\/strong\u003e) sensors to resolve heater and response faults.\u003c\/p\u003e\n\u003ch4\u003eAre OEM connectors pre-wired for bolt-on installation?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Both sensors include OEM-matched plugs for plug-and-play installation into factory exhaust bungs.\u003c\/p\u003e\n\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for crisp throttle response and accurate closed-loop fueling under boost, this matched sensor kit keeps your \u003cstrong\u003eL15B7\u003c\/strong\u003e running clean and CEL-free.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68096708706552,"sku":"DS-E3C0P87P9","price":43.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-honda-civic-2016-2020-1-5l-1.jpg?v=1794640669","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-civic-2016-2020-1-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}