{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-accord-2000-2002-3-0l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Accord (2000-2002) 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Oxygen Sensor Kit for 2000-2002 Honda Accord (CG1\/CG2)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This upstream and downstream oxygen sensor kit monitors pre- and post-catalyst exhaust gases on the 2000-2002 Honda Accord (\u003cstrong\u003eCG1\/CG2\u003c\/strong\u003e) \u003cstrong\u003eJ30A1 3.0L\u003c\/strong\u003e to regulate air-fuel ratios and verify catalytic efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Honda Accord O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eOver high mileage, factory zirconia elements on the \u003cstrong\u003eCG1\/CG2\u003c\/strong\u003e chassis with the \u003cstrong\u003eJ30A1 3.0L V6\u003c\/strong\u003e suffer thermal fatigue, silicone poisoning, and carbon fouling. Their internal ceramic heaters frequently fracture or develop open circuits, throwing \u003cstrong\u003eP0135\u003c\/strong\u003e or \u003cstrong\u003eP0141\u003c\/strong\u003e codes and delaying closed-loop fueling. When upstream sensor response slows, the ECU defaults to rich open-loop trim, fouling spark plugs and overheating the catalytic substrate.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM O2 Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0133\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e from heater burnout or sluggish voltage switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Fuel Economy:\u003c\/strong\u003e Skewed voltage feedback forces rich fueling, dropping MPG and fouling plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailed Emissions \u0026amp; Rough Idle:\u003c\/strong\u003e Erratic air-fuel trim causes surging and fails OBD-II readiness monitors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Zirconia O2 Sensor Solution\u003c\/h3\u003e\u003cp\u003eReplacing both positions together restores crisp millivolt switching across the \u003cstrong\u003eJ30A1\u003c\/strong\u003e exhaust stream. Each direct-fit sensor uses a corrosion-resistant stainless housing, laser-welded shield, and fast-acting ceramic heater matched to OEM specs (\u003cstrong\u003e234-4099\u003c\/strong\u003e, \u003cstrong\u003e234-4367\u003c\/strong\u003e, \u003cstrong\u003e234-4355\u003c\/strong\u003e). Factory-style weatherpack connectors and OEM harness lengths eliminate wire splicing, delivering true plug-and-play installation, accurate closed-loop fuel trim calibration, and reliable downstream catalyst monitoring under all driving loads.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x Upstream Oxygen Sensor\u003c\/li\u003e\n\u003cli\u003e1x 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;\"\u003e2000-2002 Honda Accord\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;\"\u003eJ30A1 3.0L V6 \/ CG1, CG2\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;\"\u003eSensor Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4-Wire Heated Zirconia (Upstream \u0026amp; 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 Splicing)\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;\"\u003e234-4099, 234-4367, 234-4355\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2000-2002 Honda Accord 3.0L (Upstream \u0026amp; Downstream Positions)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the CG1\/CG2 Accord?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Fits the 2000-2002 Honda Accord with the \u003cstrong\u003eJ30A1 3.0L\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 2.3L 4-cylinder models and the 1999-2000 Civic 1.6L.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, or P0133 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, if caused by a failed sensor.\u003c\/strong\u003e Replacing both units with \u003cstrong\u003e234-4099\u003c\/strong\u003e \/ \u003cstrong\u003e234-4367\u003c\/strong\u003e \/ \u003cstrong\u003e234-4355\u003c\/strong\u003e equivalents restores heater resistance and signal speed; clear codes afterward.\u003c\/p\u003e\u003ch4\u003eIs wire splicing required for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Both sensors include OEM-style connectors for direct plug-in installation; torque evenly into clean exhaust bungs.\u003c\/p\u003e\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\u003cp\u003eBuilt for factory emissions compliance and accurate ECU feedback, this matched sensor kit keeps your \u003cstrong\u003eJ30A1\u003c\/strong\u003e CEL-free. Reliable air-fuel control restores throttle response and daily fuel efficiency.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68115823460600,"sku":"DS-E7RXIAE12","price":60.95,"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-accord-2000-2002-3-0l-1.jpg?v=1794709483","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-accord-2000-2002-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}