{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-fit-2015-2019-1-5l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Fit (2015-2019) 1.5L","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 2015-2019 Honda Fit (GK5)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched O2 sensor kit restores closed-loop air-fuel ratio feedback and catalyst monitoring on the 2015-2019 Honda Fit \u003cstrong\u003eGK5\u003c\/strong\u003e (\u003cstrong\u003eL15B1 1.5L\u003c\/strong\u003e).\u003c\/p\u003e\u003ch3\u003eThe Stock Honda Fit Oxygen Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eGK5\u003c\/strong\u003e Fit \u003cstrong\u003eL15B1 1.5L\u003c\/strong\u003e endure constant thermal cycling and direct-injection soot buildup inside the exhaust stream. Over time, internal heater elements burn out or carbon fouling slows zirconia voltage response, blinding the PCM during closed-loop fueling. When switching lag or heater resistance spikes, the ECU logs fault codes like \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e and reverts to rich open-loop mapping.\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\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e heater faults, or slow-response codes like \u003cstrong\u003eP0133\u003c\/strong\u003e and \u003cstrong\u003eP0420\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErratic Fueling:\u003c\/strong\u003e Delayed voltage signals cause rough idling, throttle hesitation, and skewed fuel trims.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Economy \u0026amp; Failed Emissions:\u003c\/strong\u003e Rich default fueling wastes gas and causes OBD-II inspection failures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Dual O2 Sensor Solution\u003c\/h3\u003e\u003cp\u003eReplacing both sensors as a matched pair restores accurate pre-cat lambda feedback and post-cat catalyst monitoring simultaneously. Built with thermal-shock-resistant zirconia ceramic sensing elements and sealed stainless steel housings, these units resist exhaust moisture and carbon fouling. Factory-length wiring harnesses with OEM-style weatherproof connectors plug straight into the \u003cstrong\u003eGK5\u003c\/strong\u003e harness, directly replacing \u003cstrong\u003e36531-5R0-003\u003c\/strong\u003e, \u003cstrong\u003e234-9146\u003c\/strong\u003e, and \u003cstrong\u003e234-4978\u003c\/strong\u003e without cutting or splicing.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x Upstream Oxygen Sensor\u003c\/li\u003e\n\u003cli\u003e1x 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;\"\u003e2015-2019 Honda Fit\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\u003eL15B1 1.5L\u003c\/strong\u003e \/ \u003cstrong\u003eGK5\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;\"\u003eEmissions \u0026amp; Substrate\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eZirconia Ceramic Element\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;\"\u003e\n\u003cstrong\u003e36531-5R0-003\u003c\/strong\u003e, \u003cstrong\u003e365315R0003\u003c\/strong\u003e, \u003cstrong\u003e234-4978\u003c\/strong\u003e, \u003cstrong\u003e234-9146\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e2015-2019 Honda Fit 1.5L (\u003cstrong\u003eGK5\u003c\/strong\u003e \/ \u003cstrong\u003eL15B1\u003c\/strong\u003e)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the GK5 Fit?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This fits the 2015-2019 Honda Fit with the \u003cstrong\u003eL15B1 1.5L\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 2009-2014 GE8 models and Fit EV variants.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135, P0141, or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, if sensor-related.\u003c\/strong\u003e Replacing both \u003cstrong\u003e234-9146\u003c\/strong\u003e and \u003cstrong\u003e234-4978\u003c\/strong\u003e units clears \u003cstrong\u003eP0135\u003c\/strong\u003e\/\u003cstrong\u003eP0141\u003c\/strong\u003e heater faults and false \u003cstrong\u003eP0420\u003c\/strong\u003e codes, unless the catalytic converter itself has failed.\u003c\/p\u003e\u003ch4\u003eDo the sensors require splicing or special hardware?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Both units use OEM-style connectors for direct installation into factory bungs; clear ECU codes afterward.\u003c\/p\u003e\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\u003cp\u003eEngineered for JDM fuel-injection accuracy, this matched set restores crisp throttle response and clean combustion on your \u003cstrong\u003eGK5\u003c\/strong\u003e for CEL-free \u003cstrong\u003eL15B1\u003c\/strong\u003e reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68094248878328,"sku":"DS-EHAARQKZP","price":48.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-honda-fit-2015-2019-1-5l-1.jpg?v=1794618442","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-fit-2015-2019-1-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}