{"product_id":"o2-oxygen-sensor-upstream-downstream-for-mazda-3-6-cx-5-2013-2018-2-0l-2-5l","title":"O2 Oxygen Sensor Upstream Downstream for Mazda 3 6 CX-5 (2013-2018) 2.0L 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream \u0026amp; Downstream O2 Oxygen Sensor Kit for 2013-2018 Mazda 3,6,CX-5 (BM\/BN, GJ\/GL, KE)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched upstream and downstream oxygen sensor kit monitors pre- and post-catalyst exhaust oxygen levels on 2013-2018 Mazda 3, 6, and CX-5 \u003cstrong\u003ePE-VPS 2.0L\u003c\/strong\u003e and \u003cstrong\u003ePY-VPS 2.5L\u003c\/strong\u003e engines to regulate air-fuel trims and verify catalyst efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Mazda 3,6,CX-5 Oxygen Sensor Failure\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eBM\/BN\u003c\/strong\u003e, \u003cstrong\u003eGJ\/GL\u003c\/strong\u003e, and \u003cstrong\u003eKE\u003c\/strong\u003e platforms endure severe thermal cycling near the high-compression SkyActiv exhaust manifold. Internal ceramic zirconia elements micro-fracture from heat soak, while oil ash or carbon fouling coats the sensing tip and slows voltage response. Additionally, internal heater circuits spike in resistance or burn open, triggering \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0134\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e codes and forcing rich open-loop fueling.\u003c\/p\u003e\n\n\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \u0026amp; Heater DTCs:\u003c\/strong\u003e Codes such as \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP2195\u003c\/strong\u003e trigger due to open internal heater circuits or sluggish lambda switching.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eErratic Fuel Trims \u0026amp; High Consumption:\u003c\/strong\u003e Corrupted upstream sensor feedback skews short- and long-term fuel trims, causing rich running and reduced MPG.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRough Idle \u0026amp; Emissions Failure:\u003c\/strong\u003e Delayed O2 response leads to idle hunting, throttle hesitation under load, and failed state OBD-II emissions inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Direct-Fit Matched O2 Sensor Solution\u003c\/h3\u003e\n\u003cp\u003eReplacing both sensors as a calibrated pair restores rapid closed-loop air-fuel control and accurate catalyst monitoring on \u003cstrong\u003ePE-VPS\u003c\/strong\u003e and \u003cstrong\u003ePY-VPS\u003c\/strong\u003e engines. Each unit features a stainless steel housing, laser-welded protective shroud, and fast-acting planar ceramic element engineered to resist thermal shock and exhaust moisture. Factory-length harnesses with OEM weatherproof connectors plug directly into the vehicle loom without splicing, replacing \u003cstrong\u003e234-4939\u003c\/strong\u003e, \u003cstrong\u003e234-8082\u003c\/strong\u003e, \u003cstrong\u003ePEDD188G1\u003c\/strong\u003e, \u003cstrong\u003ePE021886ZA\u003c\/strong\u003e, \u003cstrong\u003ePE121886Z\u003c\/strong\u003e, and \u003cstrong\u003ePEDE1886Z\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Upstream Oxygen Sensor (Direct-Fit OEM Connector)\u003c\/li\u003e\n  \u003cli\u003e1x Downstream Oxygen Sensor (Direct-Fit OEM Connector)\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;\"\u003e2013-2018 Mazda 3,6,CX-5\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;\"\u003ePE-VPS 2.0L \u0026amp; PY-VPS 2.5L \/ BM\/BN, GJ\/GL, KE\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 Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect-Fit Upstream A\/F \u0026amp; Downstream Heated Zirconia O2\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 Bolt-On OEM Replacement (No Cutting or Welding)\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;\"\u003e234-4939, 234-8082, PEDD188G1, PE021886ZA, PE121886Z, PEDE1886Z\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\u003e2014-2018 Mazda 3 (\u003cstrong\u003eBM\/BN\u003c\/strong\u003e) — 2.0L and 2.5L\u003c\/li\u003e\n  \u003cli\u003e2014-2018 Mazda 6 (\u003cstrong\u003eGJ\/GL\u003c\/strong\u003e) — 2.5L\u003c\/li\u003e\n  \u003cli\u003e2013-2016 Mazda CX-5 (\u003cstrong\u003eKE\u003c\/strong\u003e) — 2.0L\u003c\/li\u003e\n  \u003cli\u003e2014-2016 Mazda CX-5 (\u003cstrong\u003eKE\u003c\/strong\u003e) — 2.5L\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 BM\/BN, GJ\/GL, and KE 3,6,CX-5?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2014-2018 Mazda 3 (\u003cstrong\u003eBM\/BN\u003c\/strong\u003e 2.0L\/2.5L), 2014-2018 Mazda 6 (\u003cstrong\u003eGJ\/GL\u003c\/strong\u003e 2.5L), and 2013-2016 Mazda CX-5 (\u003cstrong\u003eKE\u003c\/strong\u003e 2.0L 2013-2016; 2.5L 2014-2016) equipped with the \u003cstrong\u003ePE-VPS\u003c\/strong\u003e or \u003cstrong\u003ePY-VPS\u003c\/strong\u003e engine. \u003cstrong\u003eConfirm engine displacement before ordering; excludes 2017+ CX-5 KF and 2.5T turbocharged models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWill this clear P0135\/P0141 codes and restore fuel trims?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes, when failed sensors or open heaters are the root cause.\u003c\/strong\u003e Installing this matched upstream and downstream set restores accurate lambda feedback to clear \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, and \u003cstrong\u003eP0141\u003c\/strong\u003e after resetting DTCs; inspect harness wiring and check for exhaust leaks prior to installation.\u003c\/p\u003e\n\n\u003ch4\u003eAre the electrical connectors plug-and-play without splicing?\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Both sensors feature factory-terminated OEM connectors for direct installation; apply O2-sensor-safe anti-seize only to the bung threads if not pre-coated, avoiding the sensing tip, and torque to factory specification.\u003c\/p\u003e\n\n\u003ch3\u003eThe Mazda Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-compression SkyActiv-G emissions precision, this matched sensor pair maintains exact stoichiometric air-fuel targets and ECU readiness. Expect consistent fuel economy, crisp throttle response, and CEL-free daily operation.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68107225366776,"sku":"DS-ED9IXIHCH","price":65.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-mazda-3-6-cx-5-2013-2018-2-0l-2-5l-1.jpg?v=1794680965","url":"https:\/\/performancechiptuning.com\/es\/products\/o2-oxygen-sensor-upstream-downstream-for-mazda-3-6-cx-5-2013-2018-2-0l-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}