{"product_id":"ford-nox-sensor-lk21-5l248-ac-sns977a-a3c05714000-02","title":"NOx Sensor For Ford | OEM LK21-5L248-AC | SNS977A | A3C05714000-02 | Nitrogen Oxide Sensor","description":"\u003ch2 data-section-id=\"famza\" data-start=\"118\" data-end=\"181\"\u003eFitment (Verified OEM Cross-Reference — NO guessing added)\u003c\/h2\u003e\n\u003cp data-start=\"182\" data-end=\"495\"\u003eBased on \u003cstrong data-start=\"191\" data-end=\"293\"\u003eOEM Ford parts listings, Continental SNS977A catalog data, and multiple aftermarket EPC references\u003c\/strong\u003e, this NOx sensor is used in \u003cstrong data-start=\"322\" data-end=\"358\"\u003eFord diesel SCR (AdBlue) systems\u003c\/strong\u003e, mainly on \u003cstrong data-start=\"370\" data-end=\"494\"\u003eTransit \/ Transit Custom \/ Transit Connect EcoBlue Euro 6 platforms (V362 \/ V363 generation depending on engine variant)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"497\" data-end=\"532\"\u003eCommon system applications include:\u003c\/p\u003e\n\u003cul data-start=\"534\" data-end=\"749\"\u003e\n\u003cli data-section-id=\"1fa1lcw\" data-start=\"534\" data-end=\"582\"\u003eFord Transit Custom 2.0 EcoBlue (Euro 6 SCR)\u003c\/li\u003e\n\u003cli data-section-id=\"1pyjte1\" data-start=\"583\" data-end=\"629\"\u003eFord Transit MK8 \/ V362 2.0 EcoBlue diesel\u003c\/li\u003e\n\u003cli data-section-id=\"uttvfr\" data-start=\"630\" data-end=\"665\"\u003eFord Tourneo Custom 2.0 EcoBlue\u003c\/li\u003e\n\u003cli data-section-id=\"1wd22qe\" data-start=\"666\" data-end=\"749\"\u003eFord Transit Connect EcoBlue (selected SCR variants depending on engine\/output)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"751\" data-end=\"846\"\u003eFitment is strictly based on OE number matching:\u003cbr data-start=\"799\" data-end=\"802\"\u003e\u003cstrong data-start=\"802\" data-end=\"846\"\u003eLK21-5L248-AC \/ SNS977A \/ A3C05714000-02\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"848\" data-end=\"1134\"\u003eOE cross-reference listings confirm this is a Continental SNS977A NOx sensor used in Ford Transit EcoBlue SCR systems, commonly positioned as upstream or downstream NOx monitoring depending on exhaust layout. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1136\" data-end=\"1139\"\u003e\n\u003ch2 data-section-id=\"1sn8sr4\" data-start=\"1141\" data-end=\"1167\"\u003eTechnical Description\u003c\/h2\u003e\n\u003cp data-start=\"1168\" data-end=\"1288\"\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=\"1290\" data-end=\"1436\"\u003eIt is part of the SCR (Selective Catalytic Reduction) system, which uses AdBlue (urea solution) to reduce NOx emissions and meet Euro 6 standards.\u003c\/p\u003e\n\u003cp data-start=\"1438\" data-end=\"1590\"\u003eThe sensor operates in high-temperature exhaust conditions and communicates with the ECU via integrated electronics for continuous emissions monitoring.\u003c\/p\u003e\n\u003chr data-start=\"1592\" data-end=\"1595\"\u003e\n\u003ch2 data-section-id=\"14jk4wc\" data-start=\"1597\" data-end=\"1624\"\u003eSymptoms \/ Fault Codes\u003c\/h2\u003e\n\u003cul data-start=\"1625\" data-end=\"1841\"\u003e\n\u003cli data-section-id=\"1e8aa3i\" data-start=\"1625\" data-end=\"1647\"\u003eCheck engine light\u003c\/li\u003e\n\u003cli data-section-id=\"9918q9\" data-start=\"1648\" data-end=\"1679\"\u003eSCR \/ AdBlue system warning\u003c\/li\u003e\n\u003cli data-section-id=\"1n20jgn\" data-start=\"1680\" data-end=\"1716\"\u003eNOx sensor communication failure\u003c\/li\u003e\n\u003cli data-section-id=\"yaaasq\" data-start=\"1717\" data-end=\"1780\"\u003eP2200 \/ P229F \/ U029D type codes (Ford-specific variations)\u003c\/li\u003e\n\u003cli data-section-id=\"1q971qf\" data-start=\"1781\" data-end=\"1817\"\u003eReduced engine power (limp mode)\u003c\/li\u003e\n\u003cli data-section-id=\"12mwl3m\" data-start=\"1818\" data-end=\"1841\"\u003eIncreased emissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1843\" data-end=\"1846\"\u003e\n\u003ch2 data-section-id=\"1exb13b\" data-start=\"1848\" data-end=\"1870\"\u003eOE \/ Part Numbers\u003c\/h2\u003e\n\u003cul data-start=\"1871\" data-end=\"2019\"\u003e\n\u003cli data-section-id=\"1a710ix\" data-start=\"1871\" data-end=\"1888\"\u003eLK21-5L248-AC\u003c\/li\u003e\n\u003cli data-section-id=\"9tbgri\" data-start=\"1889\" data-end=\"1900\"\u003eSNS977A\u003c\/li\u003e\n\u003cli data-section-id=\"1y3scvl\" data-start=\"1901\" data-end=\"1919\"\u003eA3C05714000-02\u003c\/li\u003e\n\u003cli data-section-id=\"gl40y8\" data-start=\"1920\" data-end=\"2019\"\u003eLK215L248AC (format variant used in aftermarket listings) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2021\" data-end=\"2024\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"2026\" data-end=\"2034\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"153fw06\" data-start=\"2036\" data-end=\"2074\"\u003eIs this sensor vehicle-specific?\u003c\/h3\u003e\n\u003cp data-start=\"2075\" data-end=\"2230\"\u003eYes. Ford NOx sensors are ECU-calibrated. Even small suffix changes (AC \/ AD \/ AG revisions) can change connector shape, cable length, or software pairing.\u003c\/p\u003e\n\u003ch3 data-section-id=\"vnk1ty\" data-start=\"2232\" data-end=\"2282\"\u003eWhy do Transit models share similar sensors?\u003c\/h3\u003e\n\u003cp data-start=\"2283\" data-end=\"2402\"\u003eBecause Ford uses shared EcoBlue diesel SCR architecture across Transit, Transit Custom, and Transit Connect platforms.\u003c\/p\u003e\n\u003ch3 data-section-id=\"txejym\" data-start=\"2404\" data-end=\"2449\"\u003eCan similar OE numbers be used instead?\u003c\/h3\u003e\n\u003cp data-start=\"2450\" data-end=\"2612\"\u003eNot recommended. These are emission-critical ECU-coded components and must match exact OE specification to avoid SCR faults, limp mode, or incorrect NOx readings.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51863384588420,"sku":"LK21-5L248-AC\/SNS977A\/A3C05714000-02","price":154.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_bb36d203-73f6-47a6-8f85-099983ae4d96.jpg?v=1778947015","url":"https:\/\/www.jslook.com\/products\/ford-nox-sensor-lk21-5l248-ac-sns977a-a3c05714000-02","provider":"ASHENG","version":"1.0","type":"link"}