{"product_id":"nox-sensor-audi-8w0907807q-5wk97434-a4-a5-s5-scr-unit","title":"NOx Nitrogen Oxide Sensor for Audi A4 \/ A5 \/ S5 8W0907807Q \/ 8W0907807E \/ 8W0907807L \/ 5WK97434 SCR Emission System Unit","description":"\u003cp data-start=\"149\" data-end=\"332\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"149\" data-end=\"160\"\u003eFITMENT\u003c\/strong\u003e\u003cbr data-start=\"160\" data-end=\"163\"\u003eCompatible with Audi diesel vehicles equipped with SCR (Selective Catalytic Reduction) AdBlue emission systems requiring NOx monitoring.\u003cbr data-start=\"299\" data-end=\"302\"\u003eCommon applications include:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"333\" data-end=\"551\"\u003e\n\u003cli data-section-id=\"s8c65x\" data-start=\"333\" data-end=\"383\"\u003eAudi A4 (B9 \/ 8W platform diesel SCR variants)\u003c\/li\u003e\n\u003cli data-section-id=\"ebcirg\" data-start=\"384\" data-end=\"429\"\u003eAudi A5 (F5 platform diesel SCR variants)\u003c\/li\u003e\n\u003cli data-section-id=\"1rvea7x\" data-start=\"430\" data-end=\"497\"\u003eAudi S5 (diesel SCR-equipped models where applicable by region)\u003c\/li\u003e\n\u003cli data-section-id=\"uej1wu\" data-start=\"498\" data-end=\"551\"\u003eRelated Volkswagen Group MLB Evo diesel platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"553\" data-end=\"579\"\u003eUsing reference numbers:\u003c\/p\u003e\n\u003cul data-start=\"580\" data-end=\"685\"\u003e\n\u003cli data-section-id=\"12gz1hj\" data-start=\"580\" data-end=\"594\"\u003e8W0907807Q\u003c\/li\u003e\n\u003cli data-section-id=\"12gzbkj\" data-start=\"595\" data-end=\"609\"\u003e8W0907807E\u003c\/li\u003e\n\u003cli data-section-id=\"12gzj2y\" data-start=\"610\" data-end=\"624\"\u003e8W0907807L\u003c\/li\u003e\n\u003cli data-section-id=\"1tjj5as\" data-start=\"625\" data-end=\"685\"\u003e5WK97434 (Continental\/VDO sensor family cross-reference)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"687\" data-end=\"857\"\u003eThis NOx sensor is part of the SCR exhaust aftertreatment system, responsible for monitoring nitrogen oxide emissions and controlling AdBlue dosing for Euro 6 compliance.\u003c\/p\u003e\n\u003chr data-start=\"859\" data-end=\"862\"\u003e\n\u003cp data-start=\"864\" data-end=\"1065\"\u003e\u003cstrong data-start=\"864\" data-end=\"871\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-start=\"871\" data-end=\"874\"\u003eQ1: What is the function of this NOx sensor?\u003cbr data-start=\"918\" data-end=\"921\"\u003eA1: It measures nitrogen oxide (NOx) levels in the exhaust system and sends data to the ECU to regulate AdBlue injection and reduce emissions.\u003c\/p\u003e\n\u003cp data-start=\"1067\" data-end=\"1230\"\u003eQ2: Where is it installed?\u003cbr data-start=\"1093\" data-end=\"1096\"\u003eA2: It is installed in the SCR exhaust system, typically before or after the catalytic converter depending on vehicle configuration.\u003c\/p\u003e\n\u003cp data-start=\"1232\" data-end=\"1385\"\u003eQ3: What are symptoms of failure?\u003cbr data-start=\"1265\" data-end=\"1268\"\u003eA3: Check engine light, SCR\/AdBlue warnings, NOx sensor fault codes, reduced engine power, or limp mode activation.\u003c\/p\u003e\n\u003cp data-start=\"1387\" data-end=\"1588\"\u003eQ4: Are 8W0907807Q \/ E \/ L interchangeable?\u003cbr data-start=\"1430\" data-end=\"1433\"\u003eA4: These are revision-level variants within the same Audi SCR sensor family. Compatibility depends on VIN, ECU calibration, and emission system version.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51652455399556,"sku":"8W0907807E\/5WK97434","price":237.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_ca59e087-1131-4121-82a4-fd047a230aa8.jpg?v=1773993606","url":"https:\/\/www.jslook.com\/products\/nox-sensor-audi-8w0907807q-5wk97434-a4-a5-s5-scr-unit","provider":"ASHENG","version":"1.0","type":"link"}