{"product_id":"oxygen-sensors-for-mazda-6-2009-2013-2-5l-upstream","title":"Oxygen Sensors for Mazda 6 (2009-2013) 2.5L Upstream","description":"\u003ch2\u003eDirect-Fit Upstream Oxygen Sensor for 2009-2013 Mazda 6\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Upstream Oxygen Sensor monitors exhaust gas composition ahead of the catalytic converter on the 2009-2013 Mazda 6 to deliver precise real-time air-fuel ratio data directly to the ECU for closed-loop fueling control.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mazda 6 Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eOver extended thermal cycles, the factory upstream sensor on the \u003cstrong\u003eGH\u003c\/strong\u003e platform suffers from carbon fouling, siloxane contamination, and internal heater element breakdown. This degradation leads to sluggish voltage switching and delayed stoichiometric feedback. As the ECM falls back onto conservative fuel maps, the \u003cstrong\u003eL5-VE\u003c\/strong\u003e engine experiences rough idling, reduced throttle responsiveness, increased tailpipe emissions, and persistent diagnostic trouble codes such as P0130 through P0134.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to restore accurate lambda readings, this direct-fit upstream replacement features an advanced planar zirconia ceramic sensing element encased in a high-grade 304 stainless steel housing. An integrated, rapid-fire internal heater drastically reduces light-off time to bring the engine into closed-loop operation faster upon cold starts. Dual-layer laser-welded shielding prevents contamination from raw exhaust debris while maintaining gas permeability, ensuring exact millivolt signal transfer through the OEM-spec harness connector.\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;\"\u003e2009-2013 Mazda 6\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\u003eL5-VE\u003c\/strong\u003e (2.5L DOHC) \/ \u003cstrong\u003eGH\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;\"\u003e170 hp \/ 167 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\u003e2009 Mazda 6 i (2.5L L4 - L5-VE)\u003c\/li\u003e\n  \u003cli\u003e2010 Mazda 6 i (2.5L L4 - L5-VE)\u003c\/li\u003e\n  \u003cli\u003e2011 Mazda 6 i (2.5L L4 - L5-VE)\u003c\/li\u003e\n  \u003cli\u003e2012 Mazda 6 i (2.5L L4 - L5-VE)\u003c\/li\u003e\n  \u003cli\u003e2013 Mazda 6 i (2.5L L4 - L5-VE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GH 6?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2009-2013 Mazda 6 equipped with the \u003cstrong\u003eL5-VE\u003c\/strong\u003e 2.5L engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this sensor clear an active check engine light?\u003c\/strong\u003e\u003cbr\u003e Yes, once installed and after ECM short- and long-term fuel trims adapt during a standard drive cycle, upstream-related trouble codes will clear.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mazda Performance Caliber\u003c\/h3\u003e\n\u003cp\u003eMaintaining proper lambda feedback preserves the lively throttle response and fuel economy the Japanese-engineered MZR powertrain was designed to deliver, protecting your catalytic converter from unburned hydrocarbons.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50511238856952,"sku":"DS-E38Q1GKJI","price":84.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-mazda-6-2009-2013-2-5l-upstream-1.jpg?v=1789411813","url":"https:\/\/performancechiptuning.com\/products\/oxygen-sensors-for-mazda-6-2009-2013-2-5l-upstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}