{"product_id":"o2-oxygen-sensor-upstream-downstream-for-cadillac-srx-2010-2016-3-0l-3-6l","title":"O2 Oxygen Sensor Upstream Downstream for Cadillac SRX (2010-2016) 3.0L 3.6L","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 2010-2016 Cadillac SRX (GMT166)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This 4-piece oxygen sensor kit monitors pre- and post-catalyst exhaust gas ratios on the \u003cstrong\u003eGMT166\u003c\/strong\u003e Cadillac SRX (\u003cstrong\u003eLF1\u003c\/strong\u003e\/\u003cstrong\u003eLFX\u003c\/strong\u003e) for accurate ECM fuel trim control.\u003c\/p\u003e\u003ch3\u003eThe Stock Cadillac SRX Sensor Degradation Failure\u003c\/h3\u003e\u003cp\u003eHigh-mileage \u003cstrong\u003eGMT166\u003c\/strong\u003e models equipped with \u003cstrong\u003eLF1 3.0L V6\u003c\/strong\u003e and \u003cstrong\u003eLFX 3.6L V6\u003c\/strong\u003e engines expose OEM sensors to severe thermal cycling and soot buildup. Over time, zirconia elements carbon-foul and internal heater resistance spikes, causing sluggish voltage switching. When Bank 1 or Bank 2 sensors lag, the ECM locks into rich fuel trims, triggering \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e codes and overheating catalysts.\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:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, and false \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErratic Fuel Trims:\u003c\/strong\u003e Skewed voltage causes rough idle and highway surging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor Economy \u0026amp; Failed Smog:\u003c\/strong\u003e Forces rich open-loop fueling and emissions failures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit 4-Sensor Replacement Solution\u003c\/h3\u003e\u003cp\u003eReplacing all four sensors simultaneously restores balanced Bank 1 and Bank 2 feedback on \u003cstrong\u003eLF1\u003c\/strong\u003e and \u003cstrong\u003eLFX\u003c\/strong\u003e exhaust manifolds. Built with stainless steel housings and fast-response zirconia elements, these units match \u003cstrong\u003e234-4815\u003c\/strong\u003e and \u003cstrong\u003e234-4816\u003c\/strong\u003e calibration specs. Direct-fit weatherpack connectors ensure plug-and-play signal integrity without wire splicing, eliminating voltage drop and restoring closed-loop fuel control.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 Upstream Oxygen Sensors\u003c\/li\u003e\n\u003cli\u003e2 Downstream 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;\"\u003e2010-2016 Cadillac SRX\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\u003eLF1 3.0L V6\u003c\/strong\u003e \/ \u003cstrong\u003eLFX 3.6L V6\u003c\/strong\u003e \/ \u003cstrong\u003eGMT166\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;\"\u003eSensor Architecture\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4-Wire Heated Zirconia (2 Upstream \/ 2 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-Fit OEM Replacement (Plug-and-Play, No Splicing)\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\u003e234-4815\u003c\/strong\u003e, \u003cstrong\u003e234-4816\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\n\u003cli\u003e2010-2011 Cadillac SRX 3.0L V6 (\u003cstrong\u003eLF1\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003e2012-2016 Cadillac SRX 3.6L V6 (\u003cstrong\u003eLFX\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 \u003cstrong\u003eGMT166\u003c\/strong\u003e SRX?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Fits 2010-2011 SRX \u003cstrong\u003e3.0L V6 (LF1)\u003c\/strong\u003e and 2012-2016 \u003cstrong\u003e3.6L V6 (LFX)\u003c\/strong\u003e. \u003cstrong\u003eExcludes 2004-2009 first-gen SRX models; confirm engine before ordering.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill replacing all four sensors clear \u003cstrong\u003eP0135\u003c\/strong\u003e or \u003cstrong\u003eP0420\u003c\/strong\u003e codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, for sensor faults.\u003c\/strong\u003e Resolves heater and response codes (\u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0155\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e); persistent \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes require catalyst inspection.\u003c\/p\u003e\u003ch4\u003eDo these sensors require cutting or splicing factory wiring?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eNo.\u003c\/strong\u003e Direct-fit OEM connectors match \u003cstrong\u003e234-4815\u003c\/strong\u003e and \u003cstrong\u003e234-4816\u003c\/strong\u003e for true plug-and-play installation.\u003c\/p\u003e\u003ch3\u003eThe Cadillac Precision Standard\u003c\/h3\u003e\u003cp\u003eAccurate stoichiometric feedback on the \u003cstrong\u003eGMT166\u003c\/strong\u003e platform ensures reliable emissions compliance and clean ECM operation. Replacing all four aged sensors prevents recurring CELs and protects catalytic converters.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68119247716600,"sku":"DS-EM4N9BFUU","price":83.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-cadillac-srx-2010-2016-3-0l-3-6l-1.jpg?v=1794717992","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-cadillac-srx-2010-2016-3-0l-3-6l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}