{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-odyssey-1999-2004-3-5l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Odyssey (1999-2004) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Oxygen Sensor Kit for 1999-2004 Honda Odyssey (RL1)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched upstream and downstream oxygen sensor kit restores closed-loop air-fuel metering and catalyst monitoring on the 1999-2004 Honda Odyssey \u003cstrong\u003eRL1\u003c\/strong\u003e equipped with the \u003cstrong\u003eJ35A1 \/ J35A4 3.5L V6\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eThe Stock Honda Odyssey O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eRL1\u003c\/strong\u003e Odyssey degrade from exhaust heat cycling, oil contamination, and internal heater burnout on the \u003cstrong\u003eJ35A1 \/ J35A4 3.5L V6\u003c\/strong\u003e. Once the zirconia element fouls or the heater circuit opens, the ECU loses closed-loop fuel trim control. Sluggish voltage switching triggers codes such as \u003cstrong\u003eP0131\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0420\u003c\/strong\u003e while forcing rich fuel mixtures.\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, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0131\u003c\/strong\u003e, or \u003cstrong\u003eP0420\u003c\/strong\u003e when heater circuits or switching speeds fail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Idle \u0026amp; Rich Running:\u003c\/strong\u003e Fouled elements delay feedback, causing erratic fuel trims and rough cold starts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Fuel Consumption \u0026amp; Smog Failure:\u003c\/strong\u003e Faulty readings lock rich fueling, lowering MPG and failing emissions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Zirconia O2 Sensor Solution\u003c\/h3\u003e\u003cp\u003eReplacing both sensors together restores balanced pre-catalyst fuel trims and accurate post-catalyst exhaust monitoring. Each unit uses a fast-response zirconia ceramic element inside a corrosion-resistant stainless steel housing with protective gas-permeable shielding. Direct-fit OEM connectors and precision threads replace \u003cstrong\u003e234-4098\u003c\/strong\u003e and \u003cstrong\u003e234-4092\u003c\/strong\u003e without wire splicing. Factory-spec heater resistance ensures rapid closed-loop readiness and stable ECU voltage signals.\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;\"\u003e1999-2004 Honda Odyssey\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;\"\u003eJ35A1 \/ J35A4 3.5L V6 \/ RL1\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 Type\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 Plug-and-Play OEM Replacement (No Cutting or 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;\"\u003e234-4098, 234-4092\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1999-2004 Honda Odyssey 3.5L (Uses 2 sensors; 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 RL1 Odyssey?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Fits the 1999-2004 Honda Odyssey \u003cstrong\u003eJ35A1 \/ J35A4 3.5L V6\u003c\/strong\u003e. \u003cstrong\u003eThese years use 2 sensors; confirm engine before ordering (excludes non-Odyssey applications).\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 sensors clear heater codes (\u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e) and slow-response faults, though a failed catalyst causing \u003cstrong\u003eP0420\u003c\/strong\u003e requires converter service.\u003c\/p\u003e\u003ch4\u003eIs wire splicing required for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Direct-fit plugs match \u003cstrong\u003e234-4098\u003c\/strong\u003e and \u003cstrong\u003e234-4092\u003c\/strong\u003e for plug-and-play installation; torque cleanly to factory spec.\u003c\/p\u003e\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\u003cp\u003eEngineered to OEM resistance and switching specs, this sensor set keeps your \u003cstrong\u003eRL1\u003c\/strong\u003e Odyssey efficient and CEL-free.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68116112244984,"sku":"DS-ERSPM0V1Z","price":32.95,"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-odyssey-1999-2004-3-5l-1.jpg?v=1794710710","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-odyssey-1999-2004-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}