{"product_id":"o2-oxygen-sensor-upstream-downstream-for-honda-pilot-ridgeline-2009-2011-3-5l","title":"O2 Oxygen Sensor Upstream Downstream for Honda Pilot Ridgeline (2009-2011) 3.5L","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 2009-2011 Honda Pilot \u0026amp; Ridgeline (YF3\/YF4, YK1)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This 4-piece oxygen sensor kit monitors pre- and post-catalytic exhaust oxygen content on 2009-2011 Honda Pilot (\u003cstrong\u003eYF3\/YF4\u003c\/strong\u003e) and Ridgeline (\u003cstrong\u003eYK1\u003c\/strong\u003e) \u003cstrong\u003e3.5L V6\u003c\/strong\u003e engines to regulate closed-loop fuel trim and catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Honda Pilot \u0026amp; Ridgeline Oxygen Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory upstream air-fuel ratio sensors and downstream heated O2 sensors on the \u003cstrong\u003eYF3\/YF4\u003c\/strong\u003e Pilot (\u003cstrong\u003eJ35Z4\u003c\/strong\u003e) and \u003cstrong\u003eYK1\u003c\/strong\u003e Ridgeline (\u003cstrong\u003eJ35A9\u003c\/strong\u003e) endure extreme thermal cycling and exhaust contamination. Over high mileage, internal planar heater elements burn out while zirconia ceramic substrates suffer silicone, carbon, and oil-ash fouling. This degradation causes sluggish voltage switching, open-loop fuel enrichment, and recurring \u003cstrong\u003eP0134\u003c\/strong\u003e, \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0154\u003c\/strong\u003e, or \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e diagnostic trouble codes.\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 \u0026amp; Heater Faults:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, or \u003cstrong\u003eP0161\u003c\/strong\u003e when internal heater circuit resistance exceeds PCM thresholds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelayed Closed-Loop Transition:\u003c\/strong\u003e Sluggish \u003cstrong\u003eP0133\/P0153\u003c\/strong\u003e response causes rich fuel trims, rough idling, and throttle hesitation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailed Emissions \u0026amp; Fuel Economy Drop:\u003c\/strong\u003e Inaccurate downstream monitoring sets \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes and reduces fuel mileage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Zirconia Planar O2 Sensor Solution\u003c\/h3\u003e\u003cp\u003eThis matched 4-piece kit replaces both upstream wideband A\/F sensors and both downstream heated O2 sensors, directly replacing OEM numbers \u003cstrong\u003e36531-R70-A01\u003c\/strong\u003e, \u003cstrong\u003e36532-R70-A01\u003c\/strong\u003e, and \u003cstrong\u003e36532-R71-L01\u003c\/strong\u003e. Each unit features a laser-welded stainless steel housing, porous PTFE breather membrane, and fast-acting planar zirconia ceramic element for rapid light-off. Exact-length insulated leads and OEM-indexed weatherproof connectors deliver true plug-and-play installation without wire splicing.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2x Upstream Air-Fuel Ratio (O2) Oxygen Sensors\u003c\/li\u003e\n\u003cli\u003e2x Downstream Heated (O2) Oxygen Sensors\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;\"\u003e2009-2011 Honda Pilot \u0026amp; Ridgeline\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;\"\u003eJ35Z4 \/ J35A9 3.5L V6 \/ YF3, YF4, YK1\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;\"\u003ePlanar Zirconia Ceramic \/ Direct-Fit Heated A\/F \u0026amp; 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;\"\u003e234-5098, 234-4461, 234-5053, 234-5056, 234-4351, 234-4580, 36531-R70-A01, 36532-R70-A01, 36532-R71-L01, 250-25059, 250-24785, 75-3829, 75-3830\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2009-2011 Honda Pilot 3.5L V6 (\u003cstrong\u003eYF3\/YF4\u003c\/strong\u003e - \u003cstrong\u003eJ35Z4\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003e2009-2011 Honda Ridgeline 3.5L V6 (\u003cstrong\u003eYK1\u003c\/strong\u003e - \u003cstrong\u003eJ35A9\u003c\/strong\u003e)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the YF3\/YF4 Pilot and YK1 Ridgeline?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2009-2011 Honda Pilot (\u003cstrong\u003eYF3\/YF4\u003c\/strong\u003e) and Ridgeline (\u003cstrong\u003eYK1\u003c\/strong\u003e) equipped with the \u003cstrong\u003eJ35Z4\u003c\/strong\u003e or \u003cstrong\u003eJ35A9 3.5L V6\u003c\/strong\u003e engine. \u003cstrong\u003eConfirm your 3.5L engine displacement and match connector shapes before ordering; does not fit 2012+ models or non-3.5L applications.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill replacing all four sensors clear P0135, P0141, or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, when sensor degradation is the root cause.\u003c\/strong\u003e Installing fresh \u003cstrong\u003e36531-R70-A01\u003c\/strong\u003e upstream and \u003cstrong\u003e36532-R70-A01\u003c\/strong\u003e downstream units resolves heater circuit (\u003cstrong\u003eP0135\/P0141\u003c\/strong\u003e) and slow-response faults, though persistent \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes after replacement indicate failed catalytic converter substrates.\u003c\/p\u003e\u003ch4\u003eIs wire splicing or extra thread compound required for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo splicing is required.\u003c\/strong\u003e All four sensors include factory-style harnesses and pre-applied thread anti-seize; torque each sensor to \u003cstrong\u003e33 lb-ft (44 Nm)\u003c\/strong\u003e into a cool exhaust bung using a 22mm O2 sensor socket.\u003c\/p\u003e\u003ch3\u003eThe Honda Precision Standard\u003c\/h3\u003e\u003cp\u003eAccurate closed-loop fuel metering keeps the \u003cstrong\u003eJ35\u003c\/strong\u003e V6 operating cleanly, efficiently, and free of check engine lights under daily commuting or towing loads. Replacing all four oxygen sensors as a matched set restores balanced bank-to-bank air-fuel control.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68096718700792,"sku":"DS-EQVPNQSRM","price":89.95,"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-pilot-ridgeline-2009-2011-3-5l-1.jpg?v=1794640870","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-honda-pilot-ridgeline-2009-2011-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}