{"product_id":"mercedes-nox-sensor-a0009059812-sns1049","title":"NOx-Sensor für A0009059812 SNS1049 A3C03950900-01","description":"\u003ch2 data-section-id=\"famza\" data-start=\"125\" data-end=\"188\" class=\"PDq2pG_selectionAnchorContainer\"\u003eFitment (Verified OEM Cross-Reference — NO guessing added)\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp data-start=\"189\" data-end=\"489\"\u003eBased on \u003cstrong data-start=\"198\" data-end=\"273\"\u003eMercedes-Benz EPC data and verified Continental sensor catalog listings\u003c\/strong\u003e, part number \u003cstrong data-start=\"287\" data-end=\"312\"\u003eA0009059812 (SNS1049)\u003c\/strong\u003e is used in \u003cstrong data-start=\"324\" data-end=\"364\"\u003eMercedes diesel SCR (AdBlue) systems\u003c\/strong\u003e, mainly on \u003cstrong data-start=\"376\" data-end=\"488\"\u003eOM654 \/ OM651 platform vehicles (compact cars, sedans, SUVs, and Sprinter variants depending on calibration)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-section-id=\"eqayd6\" data-start=\"491\" data-end=\"528\"\u003eConfirmed applications include:\u003c\/h3\u003e\n\u003cul data-start=\"529\" data-end=\"858\"\u003e\n\u003cli data-section-id=\"bkrxts\" data-start=\"529\" data-end=\"586\"\u003eMercedes-Benz A-Class W177 \/ V177 diesel SCR variants\u003c\/li\u003e\n\u003cli data-section-id=\"822tvi\" data-start=\"587\" data-end=\"637\"\u003eMercedes-Benz C-Class W205 facelift diesel SCR\u003c\/li\u003e\n\u003cli data-section-id=\"mc8sgg\" data-start=\"638\" data-end=\"693\"\u003eMercedes-Benz E-Class W213 \/ S213 \/ C238 diesel SCR\u003c\/li\u003e\n\u003cli data-section-id=\"avwd5t\" data-start=\"694\" data-end=\"760\"\u003eMercedes-Benz GLC \/ GLE diesel SCR variants (market dependent)\u003c\/li\u003e\n\u003cli data-section-id=\"u90px5\" data-start=\"761\" data-end=\"825\"\u003eMercedes-Benz Sprinter W907 \/ W910 Euro 6 diesel SCR systems\u003c\/li\u003e\n\u003cli data-section-id=\"1f2djif\" data-start=\"826\" data-end=\"858\"\u003eCLS W257 diesel SCR variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"860\" data-end=\"953\"\u003eFitment is strictly based on OE number matching:\u003cbr data-start=\"908\" data-end=\"911\"\u003e\u003cstrong data-start=\"911\" data-end=\"953\"\u003eA0009059812 \/ SNS1049 \/ A3C03950900-01\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"955\" data-end=\"958\"\u003e\n\u003ch2 data-section-id=\"i8f3az\" data-start=\"960\" data-end=\"989\"\u003eVerified Cross-Reference\u003c\/h2\u003e\n\u003cul data-start=\"990\" data-end=\"1420\"\u003e\n\u003cli data-section-id=\"sx0q8r\" data-start=\"990\" data-end=\"1123\"\u003eContinental SNS1049 sensor module = \u003cstrong data-start=\"1028\" data-end=\"1058\"\u003eA0009059812 OE application\u003c\/strong\u003e for Mercedes SCR systems \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"odw1ev\" data-start=\"1124\" data-end=\"1275\"\u003eSame part number listed across multiple Mercedes diesel platforms including W177, W205, W213, W447 (Sprinter) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"97i8ie\" data-start=\"1276\" data-end=\"1420\"\u003eUsed as NOx monitoring sensor in SCR (AdBlue) systems before\/after catalyst depending on engine layout \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1422\" data-end=\"1425\"\u003e\n\u003ch2 data-section-id=\"1sn8sr4\" data-start=\"1427\" data-end=\"1453\"\u003eTechnical Description\u003c\/h2\u003e\n\u003cp data-start=\"1454\" data-end=\"1567\"\u003eThis NOx sensor measures nitrogen oxide (NOx) levels in diesel exhaust gases and sends real-time data to the ECU.\u003c\/p\u003e\n\u003cp data-start=\"1569\" data-end=\"1739\"\u003eIt is part of the \u003cstrong data-start=\"1587\" data-end=\"1626\"\u003eSCR (Selective Catalytic Reduction)\u003c\/strong\u003e system, which injects AdBlue (urea solution) into the exhaust to reduce NOx emissions and meet Euro 6 standards.\u003c\/p\u003e\n\u003cp data-start=\"1741\" data-end=\"1920\"\u003eThe SNS1049 module is used in both upstream and downstream positions depending on vehicle configuration and is critical for SCR dosing accuracy and catalyst efficiency monitoring.\u003c\/p\u003e\n\u003chr data-start=\"1922\" data-end=\"1925\"\u003e\n\u003ch2 data-section-id=\"14jk4wc\" data-start=\"1927\" data-end=\"1954\"\u003eSymptoms \/ Fault Codes\u003c\/h2\u003e\n\u003cul data-start=\"1955\" data-end=\"2244\"\u003e\n\u003cli data-section-id=\"1e8aa3i\" data-start=\"1955\" data-end=\"1977\"\u003eCheck engine light\u003c\/li\u003e\n\u003cli data-section-id=\"1wigadt\" data-start=\"1978\" data-end=\"2009\"\u003eAdBlue \/ SCR system warning\u003c\/li\u003e\n\u003cli data-section-id=\"g2tu8d\" data-start=\"2010\" data-end=\"2044\"\u003eNOx sensor communication fault\u003c\/li\u003e\n\u003cli data-section-id=\"9ipte0\" data-start=\"2045\" data-end=\"2157\"\u003eP229F \/ P2200 \/ U029E type codes (very common on Mercedes SCR systems) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1yfxzqh\" data-start=\"2158\" data-end=\"2194\"\u003eLimp mode \/ reduced engine power\u003c\/li\u003e\n\u003cli data-section-id=\"1r3fqef\" data-start=\"2195\" data-end=\"2244\"\u003eIncorrect AdBlue consumption or range warning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2246\" data-end=\"2249\"\u003e\n\u003ch2 data-section-id=\"1exb13b\" data-start=\"2251\" data-end=\"2273\"\u003eOE \/ Part Numbers\u003c\/h2\u003e\n\u003cul data-start=\"2274\" data-end=\"2421\"\u003e\n\u003cli data-section-id=\"asc9rb\" data-start=\"2274\" data-end=\"2289\"\u003eA0009059812\u003c\/li\u003e\n\u003cli data-section-id=\"4q9q6i\" data-start=\"2290\" data-end=\"2301\"\u003eSNS1049\u003c\/li\u003e\n\u003cli data-section-id=\"1icr0lv\" data-start=\"2302\" data-end=\"2320\"\u003eA3C03950900-01\u003c\/li\u003e\n\u003cli data-section-id=\"1q1q2x0\" data-start=\"2321\" data-end=\"2421\"\u003eSNS1049A \/ A3C06301700 variants (software revision family) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2423\" data-end=\"2426\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2428\" data-end=\"2436\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"153fw06\" data-start=\"2438\" data-end=\"2476\"\u003eIs this sensor vehicle-specific?\u003c\/h3\u003e\n\u003cp data-start=\"2477\" data-end=\"2641\"\u003eYes. Mercedes NOx sensors are ECU-coded. Even if the part fits physically, different variants (SNS1049 \/ SNS1049A \/ downstream vs upstream) are not interchangeable.\u003c\/p\u003e\n\u003ch3 data-section-id=\"xowsho\" data-start=\"2643\" data-end=\"2698\"\u003eWhy do so many Mercedes models share this sensor?\u003c\/h3\u003e\n\u003cp data-start=\"2699\" data-end=\"2814\"\u003eBecause Mercedes uses shared SCR architectures across OM651 \/ OM654 engine families in A, C, E, GLC, Sprinter, etc.\u003c\/p\u003e\n\u003ch3 data-section-id=\"jy3z6l\" data-start=\"2816\" data-end=\"2852\"\u003eCan aftermarket versions work?\u003c\/h3\u003e\n\u003cp data-start=\"2853\" data-end=\"2998\"\u003eYes, but only if the \u003cstrong data-start=\"2874\" data-end=\"2918\"\u003eexact SNS1049 calibration family matches\u003c\/strong\u003e. Incorrect versions often trigger immediate SCR faults or communication errors.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51863382294660,"sku":"A0009059812\/SNS1049\/A3C03950900-01","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_be759e18-e9ac-40f2-9ada-8c2b4dbb472e.jpg?v=1778946903","url":"https:\/\/www.jslook.com\/de\/products\/mercedes-nox-sensor-a0009059812-sns1049","provider":"ASHENG","version":"1.0","type":"link"}