{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-civic-2016-2021-2-0l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Civic (2016-2021) 2.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream \u0026amp; Downstream O2 Sensors for 2016-2021 Honda Civic (FC2\/FC4)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched upstream and downstream oxygen sensor kit restores closed-loop fuel metering and catalyst monitoring on the 2016-2021 Honda Civic (\u003cstrong\u003eFC2\/FC4\u003c\/strong\u003e) with the \u003cstrong\u003eK20C2 2.0L\u003c\/strong\u003e engine.\u003c\/p\u003e\u003ch3\u003eThe Stock Honda Civic Sensor Failure\u003c\/h3\u003e\u003cp\u003eOver high mileage, factory O2 sensors on the \u003cstrong\u003eFC2\/FC4\u003c\/strong\u003e Civic with the \u003cstrong\u003eK20C2 2.0L\u003c\/strong\u003e suffer thermal shock, carbon fouling, and heater circuit burnout. Sitting in the exhaust stream, extreme heat soak degrades the upstream ceramic element and slows air-fuel feedback. Meanwhile, moisture and soot contaminate the downstream zirconia sensor, causing delayed voltage switching and triggering \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, and \u003cstrong\u003eP0141\u003c\/strong\u003e fault codes.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e or \u003cstrong\u003eP0141\u003c\/strong\u003e heater faults, plus sluggish-response \u003cstrong\u003eP0134\u003c\/strong\u003e and \u003cstrong\u003eP0420\u003c\/strong\u003e codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich Fuel Trim \u0026amp; Soot:\u003c\/strong\u003e Slow upstream response forces open-loop enrichment, causing black tailpipe soot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Economy \u0026amp; Failed Smog:\u003c\/strong\u003e Inaccurate readings cause rough idle, hesitation, and failed emissions readiness monitors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Dual-Sensor Oxygen Sensors Solution\u003c\/h3\u003e\u003cp\u003eReplacing both sensors together restores factory closed-loop fuel trim accuracy and eliminates response lag. Built with stainless steel housings, laser-welded protective shields, and fast-acting ceramic sensing elements, these direct-fit sensors resist heat soak and exhaust contamination. Pre-wired matched OEM-style connectors match factory harness lengths and pinouts for \u003cstrong\u003e234-5710\u003c\/strong\u003e, \u003cstrong\u003e234-8025\u003c\/strong\u003e, and \u003cstrong\u003e36532-5BA-A01\u003c\/strong\u003e, enabling plug-and-play installation without cutting or splicing.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 Upstream Oxygen Sensor\u003c\/li\u003e\n\u003cli\u003e1 Downstream Oxygen Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\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;\"\u003e2016-2021 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;\"\u003eK20C2 2.0L \/ FC2, FC4\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; Substrate\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eWideband AFR (Upstream) \/ Zirconia Ceramic Element (Downstream)\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;\"\u003e234-5710, 234-8025, 36532-5BA-A01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2016-2021 Honda Civic 2.0L (Confirm engine before ordering)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the FC2\/FC4 Civic?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Direct fit for the 2016-2021 Honda Civic with the \u003cstrong\u003eK20C2 2.0L\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 1.5L Turbo and 2.0L Turbo Type R models.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, for sensor faults.\u003c\/strong\u003e New \u003cstrong\u003e234-5710\u003c\/strong\u003e and \u003cstrong\u003e234-8025\u003c\/strong\u003e units resolve \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, and \u003cstrong\u003eP0141\u003c\/strong\u003e codes; a failed catalytic substrate still causes \u003cstrong\u003eP0420\u003c\/strong\u003e.\u003c\/p\u003e\u003ch4\u003eAre OEM connectors included for plug-and-play installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, factory-style plugs are pre-installed.\u003c\/strong\u003e Thread sensors into clean exhaust bungs using sensor-safe anti-seize only on threads, avoiding the sensing tip.\u003c\/p\u003e\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\u003cp\u003eEngineered for ECU fuel-trim precision and CEL-free operation on the \u003cstrong\u003eK20C2 2.0L\u003c\/strong\u003e platform, this matched sensor kit restores emissions compliance and daily drivability for your \u003cstrong\u003eFC2\/FC4\u003c\/strong\u003e Civic.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68096721879288,"sku":"DS-EJ120I5TQ","price":66.95,"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-2016-2021-2-0l-1.jpg?v=1794640922","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-civic-2016-2021-2-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}