{"product_id":"000905851187-nox-sensor","title":"Mercedes Sprinter Front NOX Sensor – Ampro Technologie | NCV3 3.0L OM642 BlueTec | #000905851187 (2010–2018)","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eA failed front NOx sensor on a NCV3 Sprinter removes the ECU's upstream nitrogen oxide reference — disrupting AdBlue dosing calculations, logging emissions fault codes, and triggering the power restriction sequence that escalates with each subsequent cold start until the sensor is replaced. This is the Ampro Technologie front NOx sensor for NCV3 Sprinters equipped with the 3.0L OM642 BlueTec diesel engine, a direct replacement that restores accurate upstream NOx measurement and proper aftertreatment system control.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhat This Part Does\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe front NOx sensor is positioned upstream in the exhaust aftertreatment system and measures the engine-out nitrogen oxide concentration before AdBlue injection and SCR processing. The ECU uses this upstream reading as the baseline to calculate the correct AdBlue dosing rate and to verify that the SCR catalyst is achieving the required NOx reduction efficiency by comparing it against the downstream sensor reading. Without accurate upstream data, the ECU cannot determine the correct dosing rate, cannot verify catalyst performance, and cannot distinguish between a dosing fault, a catalyst fault, or a sensor fault. This causes the system to log emissions faults, enter a protected operating mode, and on the BlueTec system, begin the AdBlue countdown sequence that restricts starts and eventually prevents operation.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCommon Symptoms of a Failing Front NOx Sensor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCheck engine light with fault codes related to upstream NOx sensor signal or circuit\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eEngine entering limp mode or emissions system power restriction\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdBlue dosing that is erratic, excessive, or insufficient with no dosing system fault identified\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eNOx or SCR efficiency fault codes that return after clearing\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAdBlue countdown warning in the instrument cluster\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eWhen to Replace\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace when the sensor is confirmed faulty by XENTRY or a compatible scan tool with active upstream NOx fault codes. Always use OEM-quality sensors — aftermarket NOx sensors are known to produce signal drift that causes persistent faults even after installation. When replacing the front sensor, inspect the downstream sensor at the same time, as both operate as a system.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eNCV3 OM642 BlueTec Specific — VIN Verification Required\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThis is the front (upstream) NOx sensor for NCV3 Sprinters equipped with the 3.0L OM642 BlueTec diesel engine. It is not compatible with VS30 Sprinters or NCV3 Sprinters without the BlueTec\/AdBlue emissions system. Always verify sensor position, engine code, and VIN before ordering. Contact us and we'll confirm fitment before you buy.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2010–2018 Mercedes-Benz Sprinter 2500 – 3.0L OM642 BlueTec (NCV3\/W906)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2010–2018 Mercedes-Benz Sprinter 3500 – 3.0L OM642 BlueTec (NCV3\/W906)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e2010–2018 Freightliner Sprinter 2500 \/ 3500 – 3.0L OM642 BlueTec (NCV3)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e✔ Front (upstream) position only — downstream sensor requires a different part number\u003cbr\u003e✔ BlueTec models only — 2010 and later\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003ePart Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMercedes OEM: 000905851187 \/ A000905851187 \/ 000-905-85-11-87\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCore part number: 0009058511 \/ A0009058511\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eManufacturer: Ampro Technologie — A1038511\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSKU: 000905851187\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BlueTec Sprinter Parts","offers":[{"title":"Default Title","offer_id":46496640958638,"sku":"000905851187","price":499.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0657\/9077\/1374\/files\/000905851187_graphic.png?v=1788216229","url":"https:\/\/shop.bluetecsprinterparts.com\/products\/000905851187-nox-sensor","provider":"BlueTec Sprinter Parts","version":"1.0","type":"link"}