{"product_id":"oxygen-sensors-for-nissan-frontier-xterra-2007-2012-4-0l-downstream","title":"Oxygen Sensors for Nissan Frontier Xterra (2007-2012) 4.0L Downstream","description":"\u003ch2\u003eDirect-Fit Downstream Oxygen Sensor for 2007-2012 Nissan Frontier, Xterra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Downstream Oxygen Sensor monitors post-catalytic converter exhaust gases on the 2007-2012 Nissan Frontier and Xterra to ensure accurate catalyst monitoring and closed-loop fuel trim stabilization.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Frontier, Xterra Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory downstream heated oxygen sensors on the \u003cstrong\u003eVQ40DE\u003c\/strong\u003e powertrain endure sustained thermal cycling, road debris, and carbon accumulation over extended mileage. On aging \u003cstrong\u003eD40\u003c\/strong\u003e Frontier and \u003cstrong\u003eN50\u003c\/strong\u003e Xterra chassis, the internal ceramic electrolyte element becomes fouled by exhaust soot and silica, causing sluggish voltage switching. Additionally, the integrated OEM heater circuit frequently burns out, causing diagnostic trouble codes such as P0138, P0140, or false-positive P0420\/P0430 catalyst efficiency warnings, compromised air-fuel balance, and failed emissions inspections.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement downstream sensor restores factory-accurate signal telemetry between 0.1V and 0.9V to the engine control module. Constructed with a high-durability planar zirconia ceramic sensing core, it is housed within a dual-layer 304 stainless steel heat shield designed to withstand intense exhaust gas temperatures and environmental corrosion. An integrated high-speed internal ceramic heater ensures rapid closed-loop activation during cold starts. Direct-fit weather-pack terminal connectors and factory harness lengths eliminate wire cutting and soldering, ensuring zero signal resistance and long-term diagnostic accuracy.\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;\"\u003e2007-2012 Nissan Frontier, Xterra (Downstream \/ Post-Cat)\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\u003eVQ40DE\u003c\/strong\u003e \/ \u003cstrong\u003eD40\u003c\/strong\u003e (Frontier), \u003cstrong\u003eN50\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;\"\u003e261 hp \/ 281 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;\"\u003e\n\u003cstrong\u003e226A0-EA000\u003c\/strong\u003e, \u003cstrong\u003e226A1-AM601\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 Nissan Frontier 4.0L V6 (Downstream Bank 1 or Bank 2)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Nissan Xterra 4.0L V6 (Downstream Bank 1 or Bank 2)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the D40 and N50 Frontier\/Xterra?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the downstream position on 2007-2012 Nissan Frontier and Xterra models equipped with the \u003cstrong\u003eVQ40DE\u003c\/strong\u003e 4.0L V6 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this sensor clear my downstream O2 heater circuit trouble code?\u003c\/strong\u003e\u003cbr\u003e Yes, replacing an open or shorted factory sensor with this unit restores heater circuit continuity and clears codes such as P0141 and P0161 upon ECM drive-cycle completion.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Truck Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the harsh vibration and extreme thermal gradients typical of off-road trail driving and heavy utility towing, this sensor preserves powertrain efficiency across all operating demands.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511733424376,"sku":"DS-EILU9D1B3","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-nissan-frontier-xterra-2007-2012-4-0l-downstream-1.jpg?v=1789418814","url":"https:\/\/performancechiptuning.com\/fr\/products\/oxygen-sensors-for-nissan-frontier-xterra-2007-2012-4-0l-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}