{"product_id":"o2-oxygen-sensor-upstream-downstream-for-buick-encore-2013-2021-1-4l-turbo","title":"O2 Oxygen Sensor Upstream Downstream for Buick Encore (2013-2021) 1.4L Turbo","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Upstream \u0026amp; Downstream O2 Sensor Kit for 2013-2021 Buick Encore (Gamma II)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched upstream and downstream oxygen sensor set restores closed-loop fueling and catalyst monitoring on the 2013-2021 Buick Encore \u003cstrong\u003eGamma II\u003c\/strong\u003e \u003cstrong\u003eLUV 1.4L Turbo\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eThe Stock Buick Encore O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eGamma II\u003c\/strong\u003e platform endure severe thermal cycling near the \u003cstrong\u003eLUV 1.4L Ecotec Turbo\u003c\/strong\u003e exhaust manifold and catalytic converter outlet. Over time, PCV oil mist, silicon contamination, and carbon soot foul the zirconia tip, slowing voltage switching response. Meanwhile, internal ceramic heater elements suffer resistance drift and burnout from vibration and heat soak, triggering \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e codes.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM O2 Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeater \u0026amp; Circuit DTCs:\u003c\/strong\u003e \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0131\u003c\/strong\u003e trigger when heater circuits open or response lags.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Trim Drift:\u003c\/strong\u003e Sluggish upstream feedback causes erratic fueling and turbo hesitation under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Economy \u0026amp; Emissions:\u003c\/strong\u003e Lost closed-loop control lowers MPG and fails OBD-II inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Heated Zirconia O2 Sensor Solution\u003c\/h3\u003e\u003cp\u003eThis matched two-sensor kit replaces both upstream and downstream units with factory-calibrated heated zirconia elements for rapid light-off and crisp millivolt switching. Laser-welded stainless housings, high-temp sleeves, and OEM weatherproof plugs connect directly to the factory harness. Pre-applied anti-seize simplifies bung installation while matching OEM specs for \u003cstrong\u003e234-4528\u003c\/strong\u003e, \u003cstrong\u003e234-4529\u003c\/strong\u003e, \u003cstrong\u003e55572216\u003c\/strong\u003e, \u003cstrong\u003e55574136\u003c\/strong\u003e, and \u003cstrong\u003e55572993\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 Upstream Oxygen Sensor\u003c\/li\u003e\n\u003cli\u003e1 Downstream Oxygen Sensor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\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;\"\u003e2013-2021 Buick Encore\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;\"\u003eLUV 1.4L Turbo \/ Gamma II\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;\"\u003eSensor Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eHeated Zirconia (Upstream \u0026amp; Downstream)\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;\"\u003e234-4528, 234-4529, 55572216, 55574136, 55572993\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2013-2021 Buick Encore 1.4L Turbocharged (2-Sensor Layout; Confirm Engine Before Ordering)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the Gamma II Encore?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Fits the 2013-2021 Buick Encore \u003cstrong\u003eLUV 1.4L Turbo\u003c\/strong\u003e two-sensor layout. \u003cstrong\u003eConfirm your 1.4L engine before ordering; other GM models are excluded.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135 or P0141 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Restores heater continuity and feedback for \u003cstrong\u003eP0135\u003c\/strong\u003e and \u003cstrong\u003eP0141\u003c\/strong\u003e; persistent \u003cstrong\u003eP0420\u003c\/strong\u003e codes indicate catalyst failure.\u003c\/p\u003e\u003ch4\u003eAre plugs and thread prep included?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Includes factory connectors and pre-coated threads; clear stored ECM codes after installation.\u003c\/p\u003e\u003ch3\u003eThe Buick Precision Standard\u003c\/h3\u003e\u003cp\u003eBuilt for strict emissions compliance and accurate ECM communication, this matched pair keeps your Encore CEL-free with reliable fuel trim control.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68119311057144,"sku":"DS-ESATIHKGL","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-buick-encore-2013-2021-1-4l-turbo-1.jpg?v=1794718713","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-buick-encore-2013-2021-1-4l-turbo","provider":"Performance Chip Tuning","version":"1.0","type":"link"}