{"product_id":"oxygen-sensors-for-nissan-frontier-xterra-2000-2003-3-3l-upstream","title":"Oxygen Sensors for Nissan Frontier Xterra (2000-2003) 3.3L Upstream","description":"\u003ch2\u003eDirect-Fit Upstream Oxygen Sensor for 2000-2003 Nissan Frontier, Xterra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream Oxygen Sensor monitors exhaust gas composition on the 2000-2003 Frontier and Xterra to deliver precise air-fuel ratio feedback to the ECM, maintaining stoic 14.7:1 combustion and optimal fuel trim calibration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Frontier, Xterra Sensor Contamination and Response Lag\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eVG33E\u003c\/strong\u003e platform endure severe thermal cycling and cumulative exposure to unburnt hydrocarbons, soot, and oil blow-by. Over time, the porous platinum electrodes and zirconia solid electrolyte become fouled or thermally degraded. This contamination drastically slows sensor cross-counts—the transition speed between rich and lean voltage thresholds—causing signal lag greater than 100 milliseconds. As a result, the factory engine control unit relies on biased short-term fuel trims (STFT), manifesting as rough idle, reduced low-end torque, spark plug fouling, failed emissions, and recurring DTC codes like P0130, P0133, or P0135.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement upstream sensor utilizes a high-grade planar zirconia ceramic element shielded within a double-walled, laser-welded 304 stainless steel housing. An integrated fast-acting ceramic heater circuit accelerates light-off time, allowing the system to achieve its 600°F operating threshold within seconds of cold starts for rapid closed-loop transition. Precision-machined M18x1.5 threads paired with factory-pinned weather-pack terminal connectors guarantee direct-fit electrical connectivity and thermal resilience against off-road vibrations and severe underbody heat soak.\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;\"\u003e2000-2003 Nissan Frontier, Xterra\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\u003eVG33E\u003c\/strong\u003e \/ \u003cstrong\u003eD22\u003c\/strong\u003e (Frontier), \u003cstrong\u003eWD22\u003c\/strong\u003e (Xterra)\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;\"\u003e170 hp \/ 200 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\u003e2000-2003 Nissan Frontier 3.3L V6 (VG33E) - Upstream\u003c\/li\u003e\n  \u003cli\u003e2000-2003 Nissan Xterra 3.3L V6 (VG33E) - Upstream\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the D22 and WD22 Frontier, Xterra?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2000-2003 Nissan Frontier (\u003cstrong\u003eD22\u003c\/strong\u003e) and Xterra (\u003cstrong\u003eWD22\u003c\/strong\u003e) equipped with the 3.3L \u003cstrong\u003eVG33E\u003c\/strong\u003e engine in the upstream exhaust position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this resolve slow response and heater circuit trouble codes?\u003c\/strong\u003e\u003cbr\u003e Yes, installing a fresh sensor with an intact internal heating element directly clears circuit faults like P0133 and P0135 once OBD-II drive cycles verify normal switching frequency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Truck Durability Standard\u003c\/h3\u003e\n\u003cp\u003eWorking trucks demand rock-solid metering stability during sustained torque output and heavy payload hauling. This upstream sensor maintains reliable closed-loop calibration to ensure consistent towing efficiency, smooth throttle tip-in, and reliable drivetrain endurance on and off the job site.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511715303672,"sku":"DS-ED9PQM3WI","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-nissan-frontier-xterra-2000-2003-3-3l-upstream-1.jpg?v=1789418272","url":"https:\/\/performancechiptuning.com\/fr\/products\/oxygen-sensors-for-nissan-frontier-xterra-2000-2003-3-3l-upstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}