{"product_id":"oxygen-sensors-for-honda-civic-2001-2005-1-7l-upstream-downstream","title":"Oxygen Sensors for Honda Civic (2001-2005) 1.7L Upstream \u0026 Downstream","description":"\u003ch2\u003eDirect-Fit Oxygen Sensor Kit for 2001-2005 Honda Civic\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Oxygen Sensor Kit replaces aged factory upstream and downstream sensors on the 2001-2005 Civic to restore accurate closed-loop fuel metering, stabilize air-fuel ratios, and eliminate catalyst efficiency diagnostic trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Honda Civic Sensor Degradation Problem\u003c\/h3\u003e\n\u003cp\u003eOver extended heat cycles and mileage, the factory zirconia sensing elements in the seventh-generation Civic become coated with combustion blow-by, carbon deposits, and oil ash. On the \u003cstrong\u003eD17\u003c\/strong\u003e platform, degraded sensors experience sluggish switching response times (cross-counts) between rich and lean states. This slow voltage feedback keeps the engine control module (ECM) from maintaining the target 14.7:1 stoichiometric ratio, triggering false P0420 catalyst efficiency codes, rich-bias fuel trims, rough idle, reduced fuel economy, and failed tailpipe emissions tests.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to resolve unmetered fuel trim drift, this dual-sensor package features premium planar ceramic sensing cores housed in laser-welded, corrosion-resistant stainless steel shells. Precision micro-porous platinum filter layers prevent exhaust particulate contamination while ensuring rapid thermal ramp-up for fast closed-loop engagement. Equipped with pre-loomed heat-shielded wiring harnesses, OE-matched locking connectors, and factory hex-threaded housings, this matched set installs without wire cutting, splicing, or resistance variance.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\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;\"\u003e2001-2005 Honda Civic (Coupe \u0026amp; Sedan)\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;\"\u003e\n\u003cstrong\u003eD17A1\u003c\/strong\u003e, \u003cstrong\u003eD17A2\u003c\/strong\u003e \/ \u003cstrong\u003eEM2\u003c\/strong\u003e, \u003cstrong\u003eES1\u003c\/strong\u003e\n\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;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e115-127 hp \/ 110-114 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\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;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001-2005 Honda Civic DX \/ LX 1.7L SOHC (\u003cstrong\u003eD17A1\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2001-2005 Honda Civic EX 1.7L SOHC VTEC (\u003cstrong\u003eD17A2\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003e2001-2005 Honda Civic HX 1.7L VTEC-E (\u003cstrong\u003eD17A6\u003c\/strong\u003e)\u003c\/li\u003e\n  \u003cli\u003eFits 2-door Coupe (\u003cstrong\u003eEM2\u003c\/strong\u003e) and 4-door Sedan (\u003cstrong\u003eES1\u003c\/strong\u003e) chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the EM2 and ES1 Civic?\u003c\/strong\u003e\u003cbr\u003e Yes, this kit provides direct-fit upstream and downstream sensors for 2001-2005 Honda Civic chassis running the 1.7L \u003cstrong\u003eD17\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill replacing both sensors clear existing O2 and fuel trim CEL codes?\u003c\/strong\u003e\u003cbr\u003e Yes, clearing stored DTCs after installation allows the ECM to reset short- and long-term fuel trim adaptations to baseline.\u003c\/p\u003e\n\n\u003ch3\u003eThe Honda Standard\u003c\/h3\u003e\n\u003cp\u003eKeep your JDM commuter running with factory efficiency and crisp throttle response. Accurate air-fuel feedback protects your catalytic converter from raw fuel wash and maintains optimal combustion across the entire rev range.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511094776056,"sku":"DS-EQB1JFX8Y","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-honda-civic-2001-2005-1-7l-upstream-downstream-1.jpg?v=1789410078","url":"https:\/\/performancechiptuning.com\/products\/oxygen-sensors-for-honda-civic-2001-2005-1-7l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}