{"product_id":"psa-nox-sensor-9817839480-sns404-scr-adblue-sensor","title":"NOx Sensor For PSA \/ Citroën \/ Peugeot \/ Opel \/ Fiat | OEM 9817839480 | SNS404 \/ SNS0752 Family | Nitrogen Oxide Sensor","description":"\u003ch2 data-section-id=\"famza\" data-start=\"147\" data-end=\"210\" 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=\"211\" data-end=\"461\"\u003eBased on \u003cstrong data-start=\"220\" data-end=\"288\"\u003ePSA Group OEM catalog data and verified aftermarket EPC listings\u003c\/strong\u003e, part number \u003cstrong data-start=\"302\" data-end=\"332\"\u003e9817839480 (98 178 394 80)\u003c\/strong\u003e belongs to the \u003cstrong data-start=\"348\" data-end=\"404\"\u003ePSA\/FCA Euro 6 SCR (AdBlue) diesel NOx sensor system\u003c\/strong\u003e, used across multiple brands under the Stellantis group.\u003c\/p\u003e\n\u003ch3 data-section-id=\"eqayd6\" data-start=\"463\" data-end=\"500\"\u003eConfirmed applications include:\u003c\/h3\u003e\n\u003cul data-start=\"501\" data-end=\"835\"\u003e\n\u003cli data-section-id=\"yqg24i\" data-start=\"501\" data-end=\"579\"\u003ePeugeot 308 \/ 3008 \/ 5008 1.5 \u0026amp; 2.0 BlueHDi Euro 6 SCR (selected variants)\u003c\/li\u003e\n\u003cli data-section-id=\"k9nm5m\" data-start=\"580\" data-end=\"647\"\u003eCitroën C4 \/ C5 Aircross BlueHDi Euro 6 SCR (selected variants)\u003c\/li\u003e\n\u003cli data-section-id=\"1ju42zt\" data-start=\"648\" data-end=\"718\"\u003eOpel Astra K \/ Insignia B 1.6 \/ 2.0 diesel SCR (PSA-based engines)\u003c\/li\u003e\n\u003cli data-section-id=\"1n1n300\" data-start=\"719\" data-end=\"761\"\u003eDS 7 \/ DS 4 BlueHDi Euro 6 SCR systems\u003c\/li\u003e\n\u003cli data-section-id=\"1cjfo8k\" data-start=\"762\" data-end=\"835\"\u003eFiat (PSA-based Euro 6 diesel platforms in shared architecture cases)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"837\" data-end=\"967\"\u003eFitment is strictly based on OE number matching:\u003cbr data-start=\"885\" data-end=\"888\"\u003e\u003cstrong data-start=\"888\" data-end=\"967\"\u003e9817839480 \/ 98 178 394 80 \/ Continental SNS404 \/ SNS0752 family references\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"969\" data-end=\"972\"\u003e\n\u003ch2 data-section-id=\"1rbozoc\" data-start=\"974\" data-end=\"1015\"\u003eVerified Cross-Reference (Important)\u003c\/h2\u003e\n\u003cul data-start=\"1016\" data-end=\"1496\"\u003e\n\u003cli data-section-id=\"cb73y\" data-start=\"1016\" data-end=\"1171\"\u003eOEM listings confirm \u003cstrong data-start=\"1039\" data-end=\"1131\"\u003e9817839480 is a PSA Group NOx sensor used in Citroën \/ Peugeot \/ Opel SCR diesel systems\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"798ugz\" data-start=\"1172\" data-end=\"1320\"\u003eCross-reference data shows compatibility across \u003cstrong data-start=\"1222\" data-end=\"1280\"\u003ePSA \/ Opel \/ Vauxhall \/ DS \/ Fiat Euro 6 SCR platforms\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1r7wluh\" data-start=\"1321\" data-end=\"1496\"\u003eContinental supplier references list equivalent sensor family codes such as \u003cstrong data-start=\"1399\" data-end=\"1456\"\u003eSNS404 and A2C39350800 series used in PSA SCR systems\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1498\" data-end=\"1668\"\u003e📌 Key point:\u003cbr data-start=\"1511\" data-end=\"1514\"\u003eThis is a \u003cstrong data-start=\"1524\" data-end=\"1562\"\u003ePSA SCR NOx sensor with ECU coding\u003c\/strong\u003e, meaning inlet\/outlet versions and software calibration must match exactly—interchange is not guaranteed.\u003c\/p\u003e\n\u003chr data-start=\"1670\" data-end=\"1673\"\u003e\n\u003ch2 data-section-id=\"1sn8sr4\" data-start=\"1675\" data-end=\"1701\"\u003eTechnical Description\u003c\/h2\u003e\n\u003cp data-start=\"1702\" data-end=\"1822\"\u003eThis NOx sensor measures nitrogen oxide (NOx) concentration in diesel exhaust gases and sends real-time data to the ECU.\u003c\/p\u003e\n\u003cp data-start=\"1824\" data-end=\"2001\"\u003eIt is part of the \u003cstrong data-start=\"1842\" data-end=\"1881\"\u003eSCR (Selective Catalytic Reduction)\u003c\/strong\u003e system, which injects AdBlue (urea solution) into the exhaust stream to reduce NOx emissions and meet Euro 6 standards.\u003c\/p\u003e\n\u003cp data-start=\"2003\" data-end=\"2058\"\u003eThe SNS404 \/ 9817839480 sensor is typically used for:\u003c\/p\u003e\n\u003cul data-start=\"2059\" data-end=\"2178\"\u003e\n\u003cli data-section-id=\"tg3rfy\" data-start=\"2059\" data-end=\"2106\"\u003eSCR catalyst inlet or outlet NOx monitoring\u003c\/li\u003e\n\u003cli data-section-id=\"r17t45\" data-start=\"2107\" data-end=\"2141\"\u003eAdBlue dosing control feedback\u003c\/li\u003e\n\u003cli data-section-id=\"1kodfan\" data-start=\"2142\" data-end=\"2178\"\u003eEmission efficiency verification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2180\" data-end=\"2183\"\u003e\n\u003ch2 data-section-id=\"14jk4wc\" data-start=\"2185\" data-end=\"2212\"\u003eSymptoms \/ Fault Codes\u003c\/h2\u003e\n\u003cul data-start=\"2213\" data-end=\"2469\"\u003e\n\u003cli data-section-id=\"1e8aa3i\" data-start=\"2213\" data-end=\"2235\"\u003eCheck engine light\u003c\/li\u003e\n\u003cli data-section-id=\"9918q9\" data-start=\"2236\" data-end=\"2267\"\u003eSCR \/ AdBlue system warning\u003c\/li\u003e\n\u003cli data-section-id=\"16i6uni\" data-start=\"2268\" data-end=\"2312\"\u003eNOx sensor communication or signal fault\u003c\/li\u003e\n\u003cli data-section-id=\"tnrhxp\" data-start=\"2313\" data-end=\"2382\"\u003eP2200 \/ P229F \/ U029E type codes (PSA-specific variants possible)\u003c\/li\u003e\n\u003cli data-section-id=\"1q971qf\" data-start=\"2383\" data-end=\"2419\"\u003eReduced engine power (limp mode)\u003c\/li\u003e\n\u003cli data-section-id=\"1rgpoxt\" data-start=\"2420\" data-end=\"2469\"\u003eIncorrect AdBlue consumption or dosing errors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2471\" data-end=\"2474\"\u003e\n\u003ch2 data-section-id=\"1exb13b\" data-start=\"2476\" data-end=\"2498\"\u003eOE \/ Part Numbers\u003c\/h2\u003e\n\u003cul data-start=\"2499\" data-end=\"2660\"\u003e\n\u003cli data-section-id=\"1182mtj\" data-start=\"2499\" data-end=\"2529\"\u003e9817839480 \/ 98 178 394 80\u003c\/li\u003e\n\u003cli data-section-id=\"o3ud78\" data-start=\"2530\" data-end=\"2554\"\u003eSNS404 (Continental)\u003c\/li\u003e\n\u003cli data-section-id=\"9qigcr\" data-start=\"2555\" data-end=\"2587\"\u003eA2C39350800 \/ A2C39350800-01\u003c\/li\u003e\n\u003cli data-section-id=\"11aph6b\" data-start=\"2588\" data-end=\"2660\"\u003ePSA \/ Citroën \/ Peugeot \/ Opel \/ Vauxhall \/ DS SCR NOx sensor family\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2662\" data-end=\"2665\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2667\" data-end=\"2675\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"12g4n4z\" data-start=\"2677\" data-end=\"2741\"\u003eIs this sensor interchangeable with other PSA NOx sensors?\u003c\/h3\u003e\n\u003cp data-start=\"2742\" data-end=\"2871\"\u003eNo. PSA uses ECU-coded SCR sensors. Even similar-looking sensors (like 9826410180 or SNS075 variants) may not be interchangeable.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1kf02m5\" data-start=\"2873\" data-end=\"2937\"\u003eWhy do Peugeot, Citroën, Opel, and Fiat share this sensor?\u003c\/h3\u003e\n\u003cp data-start=\"2938\" data-end=\"3062\"\u003eBecause they all use the same \u003cstrong data-start=\"2968\" data-end=\"3025\"\u003eStellantis (PSA-based) Euro 6 SCR diesel architecture\u003c\/strong\u003e, so emissions components are shared.\u003c\/p\u003e\n\u003ch3 data-section-id=\"jy3z6l\" data-start=\"3064\" data-end=\"3100\"\u003eCan aftermarket versions work?\u003c\/h3\u003e\n\u003cp data-start=\"3101\" data-end=\"3233\"\u003eYes, but only if calibration and sensor family (SNS404-type) match. Cheap versions often cause SCR faults or incorrect NOx readings.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51863381868676,"sku":"9817839480","price":155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_737945be-12ed-40d4-8e9a-b9b7cea20140.jpg?v=1778946883","url":"https:\/\/www.jslook.com\/products\/psa-nox-sensor-9817839480-sns404-scr-adblue-sensor","provider":"ASHENG","version":"1.0","type":"link"}