{"product_id":"o2-oxygen-sensor-upstream-downstream-for-mitsubishi-outlander-sport-2015-2018-2-4l","title":"O2 Oxygen Sensor Upstream Downstream for Mitsubishi Outlander Sport (2015-2018) 2.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Sensor Kit for 2015-2018 Mitsubishi Outlander Sport (GA5W)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched upstream and downstream oxygen sensor kit monitors pre- and post-catalyst exhaust oxygen on the 2015-2018 Mitsubishi Outlander Sport \u003cstrong\u003eGA5W\u003c\/strong\u003e (\u003cstrong\u003e4B12 2.4L MIVEC\u003c\/strong\u003e) to regulate fuel trim and verify catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Mitsubishi Outlander Sport O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eGA5W\u003c\/strong\u003e chassis with the \u003cstrong\u003e4B12 2.4L MIVEC\u003c\/strong\u003e engine suffer thermal cycling fatigue, moisture shock, and carbon fouling over time. As the zirconia sensing element degrades or the internal heater circuit opens, voltage response slows and triggers \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, or \u003cstrong\u003eP0141\u003c\/strong\u003e codes. Sluggish upstream feedback skews closed-loop fueling, while degraded downstream monitoring falsely flags \u003cstrong\u003eP0420\u003c\/strong\u003e catalyst efficiency faults.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Oxygen Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \/ DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0420\u003c\/strong\u003e fault codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Trim Instability:\u003c\/strong\u003e Slow millivolt switching causes rough idle and poor fuel economy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmissions Failure:\u003c\/strong\u003e Incomplete readiness monitors fail OBD-II smog inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Dual Oxygen Sensor Solution\u003c\/h3\u003e\u003cp\u003eThis matched pair replaces OEM numbers \u003cstrong\u003e1588A228\u003c\/strong\u003e, \u003cstrong\u003e1588A144\u003c\/strong\u003e, \u003cstrong\u003e234-5051\u003c\/strong\u003e, and \u003cstrong\u003e234-4114\u003c\/strong\u003e with direct-fit upstream and downstream sensors for the \u003cstrong\u003e4B12 2.4L MIVEC\u003c\/strong\u003e exhaust manifold and mid-pipe bungs. High-temperature stainless housings, dual-layer shields, and zirconia ceramic elements resist thermal shock and exhaust contamination. Factory-matched connectors and exact harness lengths restore rapid closed-loop ECU communication without cutting or wiring adapters.\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;\"\u003e2015-2018 Mitsubishi Outlander Sport\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;\"\u003e4B12 2.4L MIVEC \/ GA5W\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 Engine Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e168 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;\"\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;\"\u003e1588A228, 1588A144, 234-5051, 234-4114\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2015-2018 Mitsubishi Outlander Sport 2.4L (2-sensor configuration)\u003c\/li\u003e\n\u003cli\u003eExcludes 2011-2012 2.0L applications (offered separately); confirm 2.4L engine before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the GA5W Outlander Sport?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2015-2018 Mitsubishi Outlander Sport equipped with the \u003cstrong\u003e4B12 2.4L MIVEC\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 2011-2012 2.0L models, Lancer, Outlander, and RVR applications.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, when caused by worn sensors.\u003c\/strong\u003e Replacing \u003cstrong\u003e1588A228\u003c\/strong\u003e \/ \u003cstrong\u003e234-5051\u003c\/strong\u003e and \u003cstrong\u003e1588A144\u003c\/strong\u003e \/ \u003cstrong\u003e234-4114\u003c\/strong\u003e restores heater resistance and switching speed.\u003c\/p\u003e\u003ch4\u003eIs wiring splicing or extra hardware required?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Both direct-fit sensors include OEM plug-and-play connectors and standard threads; torque to factory spec without contaminating the sensor tip.\u003c\/p\u003e\u003ch3\u003eThe Mitsubishi Precision Standard\u003c\/h3\u003e\u003cp\u003eBuilt for accurate ECU feedback and emissions compliance, this matched sensor pair restores factory fuel trim control and CEL-free operation on your \u003cstrong\u003eGA5W\u003c\/strong\u003e. Replacing both sensors together prevents asymmetric response lag.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68119409361144,"sku":"DS-ESRNAOG0P","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-downstream-for-mitsubishi-outlander-sport-2015-2018-2-4l-1.jpg?v=1794720700","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-mitsubishi-outlander-sport-2015-2018-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}