{"product_id":"vw-audi-4-pin-oxygen-sensor-connector-oem-1j0973724a-1j0973824a","title":"VW \/ Audi 4-Pin 2.8\/3.5mm Oxygen Sensor Waterproof Connector – OEM 1J0973724A \/ 1J0973824A","description":"\u003ch2\u003eVW \/ Audi 4-Pin 2.8\/3.5mm Oxygen Sensor Waterproof Connector – OEM 1J0973724A \/ 1J0973824A\u003c\/h2\u003e\n\u003cp\u003eDirect OEM-specification replacement for the Tyco \/ TE Connectivity 4-pin waterproof wire harness connector used on oxygen (lambda) sensors across Volkswagen and Audi platforms. Cross-references VW \/ Audi OEM part numbers \u003cstrong\u003e1J0973724A\u003c\/strong\u003e and \u003cstrong\u003e1J0973824A\u003c\/strong\u003e (also written as \u003cstrong\u003e1J0 973 724 A\u003c\/strong\u003e and \u003cstrong\u003e1J0 973 824 A\u003c\/strong\u003e). Uses the \u003cstrong\u003e2.8\/3.5mm contact series\u003c\/strong\u003e in brown nylon housing with waterproof sealing — the standard 4-pin oxygen sensor connector on VW Group vehicles using the MQB and PQ platform architectures.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Problem Does This Connector Solve?\u003c\/h3\u003e\n\u003cp\u003eThe 4-pin oxygen sensor connector on VW and Audi vehicles is located in the exhaust system heat zone, where thermal cycling causes the rubber seal to harden and crack, allowing moisture to corrode the terminals. A failed connector produces \u003cstrong\u003eP0130–P0167\u003c\/strong\u003e (O2 sensor circuit) fault codes, causing the engine to run rich or lean, increasing fuel consumption, and potentially damaging the catalytic converter. The brown 4-pin connector is also used on the wideband lambda sensor (LSU 4.9) on VW Group vehicles with direct injection engines.\u003c\/p\u003e\n\n\u003ch3\u003eOEM Part Number Cross-Reference\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Number\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1J0973724A\u003c\/td\u003e\n\u003ctd\u003eFemale (socket) housing\u003c\/td\u003e\n\u003ctd\u003eVW\/Audi 4-pin O2 sensor connector — harness side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1J0973824A\u003c\/td\u003e\n\u003ctd\u003eMale (plug) housing\u003c\/td\u003e\n\u003ctd\u003eVW\/Audi 4-pin O2 sensor connector — sensor side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003e4-Pin Circuit Function (Oxygen Sensor)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePin\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003cth\u003eFailure Symptom if Open\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eHeater power supply (12V)\u003c\/td\u003e\n\u003ctd\u003eO2 sensor heater fault, P0135\/P0141\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eHeater ground\u003c\/td\u003e\n\u003ctd\u003eSensor slow to reach operating temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eO2 signal output (Nernst cell)\u003c\/td\u003e\n\u003ctd\u003eP0130–P0167, rich\/lean fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eReference ground \/ Vs signal\u003c\/td\u003e\n\u003ctd\u003eWideband sensor fault (LSU 4.9)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePin Count\u003c\/td\u003e\n\u003ctd\u003e4-Pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Series\u003c\/td\u003e\n\u003ctd\u003e2.8\/3.5mm pitch (Tyco\/TE series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eNylon, brown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing\u003c\/td\u003e\n\u003ctd\u003eWaterproof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e1J0973724A \/ 1J0973824A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eOxygen \/ lambda sensor, wideband O2 sensor (LSU 4.9)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Models\u003c\/td\u003e\n\u003ctd\u003eVW Golf \/ Passat \/ Tiguan \/ Polo; Audi A3 \/ A4 \/ A6 \/ Q5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVW Golf IV \/ V \/ VI \/ VII\u003c\/strong\u003e – Upstream and downstream O2 sensor connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVW Passat B5 \/ B6 \/ B7\u003c\/strong\u003e – Lambda sensor harness connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVW Tiguan \/ Touran \/ Polo\u003c\/strong\u003e – Oxygen sensor connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudi A3 \/ A4 B6–B8 \/ A6 C5–C7 \/ Q5\u003c\/strong\u003e – O2 sensor and wideband lambda connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkoda Octavia \/ Superb \/ Fabia\u003c\/strong\u003e – Oxygen sensor harness connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: My VW Golf has a P0135 O2 sensor heater fault — could it be the connector?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A corroded or open 4-pin O2 sensor connector is a common cause of P0135 (upstream O2 sensor heater circuit) on VW Group vehicles. Test the O2 sensor heater resistance first (typically 5–20Ω) — if it is within specification, the fault is in the connector (OEM 1J0973724A) or wiring.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Are terminals included?\u003c\/strong\u003e\u003cbr\u003eA: Yes, terminals are included with all variants.\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"female male with Pin \/ 1 Pcs","offer_id":47838111367413,"sku":"14:350852#female male with Pin;380:4#1 Pcs","price":44.0,"currency_code":"USD","in_stock":true},{"title":"female with wires \/ 1 Pcs","offer_id":47838111400181,"sku":"14:350853#female with wires;380:4#1 Pcs","price":38.94,"currency_code":"USD","in_stock":true},{"title":"male with wires \/ 1 Pcs","offer_id":47838111432949,"sku":"14:29#male with wires;380:4#1 Pcs","price":24.86,"currency_code":"USD","in_stock":true},{"title":"female with Pin \/ 1 Pcs","offer_id":47838111465717,"sku":"14:350686#female with Pin;380:4#1 Pcs","price":28.38,"currency_code":"USD","in_stock":true},{"title":"male with Pin \/ 1 Pcs","offer_id":47838111498485,"sku":"14:350850#male with Pin;380:4#1 Pcs","price":14.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S077d55dfffcd43609daeff51ca681bb6n.webp?v=1773726860","url":"https:\/\/www.csldmcml.com\/products\/vw-audi-4-pin-oxygen-sensor-connector-oem-1j0973724a-1j0973824a","provider":"Cable Parts Online","version":"1.0","type":"link"}