{"product_id":"o2-oxygen-sensor-upstream-downstream-for-cadillac-ats-2013-2017-2-0l-2-5l","title":"O2 Oxygen Sensor Upstream Downstream for Cadillac ATS (2013-2017) 2.0L 2.5L","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 2013-2017 Cadillac ATS (Alpha)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This matched oxygen sensor kit monitors exhaust oxygen before and after the catalytic converter on the \u003cstrong\u003eAlpha\u003c\/strong\u003e Cadillac ATS (\u003cstrong\u003eLTG 2.0L\u003c\/strong\u003e \/ \u003cstrong\u003eLCV 2.5L\u003c\/strong\u003e) to regulate air-fuel ratio and catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock Cadillac ATS O2 Sensor Failure\u003c\/h3\u003e\u003cp\u003eFactory oxygen sensors on the \u003cstrong\u003eAlpha\u003c\/strong\u003e chassis equipped with the \u003cstrong\u003eLTG 2.0L\u003c\/strong\u003e turbo or \u003cstrong\u003eLCV 2.5L\u003c\/strong\u003e I4 endure severe exhaust heat cycling. Over time, carbon soot, oil residue, and exhaust moisture degrade the zirconia element and burn out the internal heater circuit. This slows sensor voltage switching response and triggers \u003cstrong\u003eP0135\u003c\/strong\u003e, \u003cstrong\u003eP0141\u003c\/strong\u003e, or \u003cstrong\u003eP0171\u003c\/strong\u003e ECU faults while forcing inaccurate open-loop fuel trims.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM O2 Sensor\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light \u0026amp; DTCs:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0135\u003c\/strong\u003e (Sensor 1 heater), \u003cstrong\u003eP0141\u003c\/strong\u003e (Sensor 2 heater), or \u003cstrong\u003eP0420\u003c\/strong\u003e efficiency codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Trim \u0026amp; Idle Instability:\u003c\/strong\u003e Sluggish voltage switching causes rough idle, boost hesitation, and carbon-fouled plugs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailed Emissions \u0026amp; Economy Drop:\u003c\/strong\u003e Rich\/lean fueling errors elevate tailpipe emissions and reduce MPG.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Dual-Sensor Solution\u003c\/h3\u003e\u003cp\u003eReplacing both upstream (Sensor 1) and downstream (Sensor 2) sensors as a matched set restores factory ECM closed-loop accuracy across the exhaust stream. Built to match OEM specs for \u003cstrong\u003e234-4763\u003c\/strong\u003e and \u003cstrong\u003e234-4762\u003c\/strong\u003e, each unit features a stainless steel housing, fast-acting zirconia element, and factory-length harness with keyed weatherproof plugs. Direct-fit thread geometry installs cleanly into OEM bungs with zero cutting or wiring splicing.\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;\"\u003e2013-2017 Cadillac ATS\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\u003eLTG 2.0L\u003c\/strong\u003e \/ \u003cstrong\u003eLCV 2.5L\u003c\/strong\u003e \/ \u003cstrong\u003eAlpha\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 Configuration\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eUpstream (Sensor 1) \u0026amp; Downstream (Sensor 2) Direct-Fit\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\u003e234-4763\u003c\/strong\u003e, \u003cstrong\u003e234-4762\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\u003e2013-2015 Cadillac ATS 2.0L Turbo I4 (2 sensors: upstream \u0026amp; downstream)\u003c\/li\u003e\n\u003cli\u003e2013-2016 Cadillac ATS 2.5L I4 (2 sensors: upstream \u0026amp; downstream)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the Alpha ATS?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Direct fit for 2013-2015 ATS \u003cstrong\u003eLTG 2.0L\u003c\/strong\u003e Turbo and 2013-2016 \u003cstrong\u003eLCV 2.5L\u003c\/strong\u003e I4. \u003cstrong\u003eExcludes 3.6L V6, 2016-2017 2.0L, and 2017 2.5L models.\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0135 or P0420 codes?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, if sensor degradation caused the fault.\u003c\/strong\u003e Replacing \u003cstrong\u003e234-4763\u003c\/strong\u003e and \u003cstrong\u003e234-4762\u003c\/strong\u003e resolves heater (\u003cstrong\u003eP0135\u003c\/strong\u003e\/\u003cstrong\u003eP0141\u003c\/strong\u003e) and response codes, unless the catalytic converter substrate itself is damaged.\u003c\/p\u003e\u003ch4\u003eAre OEM connectors included for plug-and-play install?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Factory-terminated harnesses plug straight into the OEM chassis connectors with no cutting or splicing.\u003c\/p\u003e\u003ch3\u003eThe Cadillac Precision Standard\u003c\/h3\u003e\u003cp\u003eEngineered for exact ECM signal fidelity, this matched O2 sensor kit keeps your \u003cstrong\u003eAlpha\u003c\/strong\u003e ATS emissions-compliant and CEL-free. Restore crisp closed-loop fueling and accurate catalyst monitoring without altering factory wiring.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68115836076280,"sku":"DS-EI7QUCTRL","price":49.95,"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-ats-2013-2017-2-0l-2-5l-1.jpg?v=1794709613","url":"https:\/\/performancechiptuning.com\/products\/o2-oxygen-sensor-upstream-downstream-for-cadillac-ats-2013-2017-2-0l-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}