{"product_id":"o2-oxygen-sensor-upstream-for-nissan-frontier-2010-2012-2-5l","title":"O2 Oxygen Sensor Upstream for Nissan Frontier (2010-2012) 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream O2 Oxygen Sensor for 2010-2012 Nissan Frontier (D40)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream O2 Oxygen Sensor monitors exhaust gas composition exiting the exhaust manifold on the 2010-2012 Frontier to ensure proper closed-loop air-fuel ratio control and maintain optimal fuel economy.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Frontier Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory upstream air-fuel ratio sensors on the \u003cstrong\u003eD40\u003c\/strong\u003e platform are exposed to extreme thermal cycling and combustion particulates. Over time, silica contamination, carbon buildup, and internal heater element fatigue cause the sensor element to become sluggish. On the \u003cstrong\u003eQR25DE\u003c\/strong\u003e 2.5L engine, a slow or failing upstream sensor delays closed-loop ECU adjustments, leading to rich running conditions, degraded MPGs, catalytic converter fouling, rough idle, and persistent DTCs like P0130 or P0133.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit upstream sensor utilizes a fast-reacting zirconia ceramic sensing thimble with a rugged platinum electrode to accurately measure lambda across transient engine loads. Encased in a laser-welded, double-protection 304 stainless steel housing, the internal element resists thermal shock and mechanical vibration. Factory-pinned terminal connectors and OEM-grade harness heat sleeving allow clean routing without cutting or splicing, maintaining signal integrity back to the ECM under high underhood temperatures.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1PCS Oxygen Sensor (Upstream Position)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \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;\"\u003e2010-2012 Nissan Frontier\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\u003eQR25DE\u003c\/strong\u003e (2.5L I4) \/ \u003cstrong\u003eD40\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;\"\u003e152 hp \/ 171 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;\"\u003eS4, 9038, 234-9038, 234-9038B, 1821382Z00, 22693-1AA0A, 22693-1AA0B, 22693-8W90A, 22693-ET000, 22693-JA00B, 22693-ZE00A, 22693-ZJ60B, 226931AA0A, 226931AA0B, 226938W90A, 22693ET000, 22693JA00B, 22693ZE00A, 22693ZJ60B, 250-54037, 250-54109, 25054037, 25054109, 25679, 15380B\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2010 Nissan Frontier 2.5L L4 (Upstream)\u003c\/li\u003e\n  \u003cli\u003e2011 Nissan Frontier 2.5L L4 (Upstream)\u003c\/li\u003e\n  \u003cli\u003e2012 Nissan Frontier 2.5L L4 (Upstream)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the D40 Frontier?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2010-2012 Nissan Frontier equipped with the \u003cstrong\u003eQR25DE\u003c\/strong\u003e 2.5L engine. \u003cstrong\u003eDoes not fit 4.0L V6 (VQ40DE) models or downstream sensor positions.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eShould anti-seize be applied to the threads before installation?\u003c\/h4\u003e\n\u003cp\u003eYes, apply a light coat of high-temperature sensor-safe anti-seize to the threads only, ensuring none touches the sensor snout or tip.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan Durability Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle severe commercial duty cycles, daily hauling, and unpaved job sites, this replacement upstream sensor restores target lambda feedback for reliable truck performance under sustained load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551480709368,"sku":"DS-ELJQJILB7","price":59.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-for-nissan-frontier-2010-2012-2-5l-1.jpg?v=1790797006","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-for-nissan-frontier-2010-2012-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}