{"product_id":"isuzu-nox-sensor-gn1-5h255-aa","title":"Nox-Sensor für GN1-5H255-AA","description":"\u003ch2 data-section-id=\"famza\" data-start=\"91\" data-end=\"154\" 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=\"155\" data-end=\"437\"\u003eBased on \u003cstrong data-start=\"164\" data-end=\"243\"\u003eIsuzu OE cross-reference listings and verified aftermarket SCR catalog data\u003c\/strong\u003e, part number \u003cstrong data-start=\"257\" data-end=\"273\"\u003eGN1-5H255-AA\u003c\/strong\u003e is used in \u003cstrong data-start=\"285\" data-end=\"331\"\u003eIsuzu diesel SCR (AdBlue) emission systems\u003c\/strong\u003e, mainly on \u003cstrong data-start=\"343\" data-end=\"436\"\u003eIsuzu light commercial \/ pickup diesel platforms equipped with SCR aftertreatment systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"439\" data-end=\"465\"\u003e📌 Confirmed OE mapping:\u003c\/p\u003e\n\u003cul data-start=\"466\" data-end=\"575\"\u003e\n\u003cli data-section-id=\"1frtklk\" data-start=\"466\" data-end=\"575\"\u003e\n\u003cstrong data-start=\"468\" data-end=\"535\"\u003eGN1-5H255-AA → Isuzu NOx Sensor assembly (SCR system component)\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"577\" data-end=\"659\"\u003eRelated cross-reference Isuzu NOx sensor families (same SCR architecture group):\u003c\/p\u003e\n\u003cul data-start=\"660\" data-end=\"791\"\u003e\n\u003cli data-section-id=\"ix5irn\" data-start=\"660\" data-end=\"695\"\u003e8-98231391-2 (A2C15577700-131B)\u003c\/li\u003e\n\u003cli data-section-id=\"xknam9\" data-start=\"696\" data-end=\"791\"\u003e8-98246506-x series (FTR \/ NPR \/ NQR \/ NRR platforms) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"793\" data-end=\"995\"\u003eThese references confirm GN1-5H255-AA belongs to the \u003cstrong data-start=\"846\" data-end=\"995\"\u003eIsuzu SCR NOx sensor system family used on 4HK1 \/ 4JJ1 diesel engine platforms (regional applications vary by emission standard and calibration).\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"997\" data-end=\"1000\"\u003e\n\u003ch2 data-section-id=\"1sn8sr4\" data-start=\"1002\" data-end=\"1028\"\u003eTechnical Description\u003c\/h2\u003e\n\u003cp data-start=\"1029\" data-end=\"1149\"\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=\"1151\" data-end=\"1331\"\u003eIt is part of the SCR (Selective Catalytic Reduction) system, which uses AdBlue (urea solution) injected into the exhaust to reduce NOx emissions and meet Euro emissions standards.\u003c\/p\u003e\n\u003cp data-start=\"1333\" data-end=\"1482\"\u003eThe sensor operates under high-temperature exhaust conditions and communicates digitally with the engine ECU to regulate emission control efficiency.\u003c\/p\u003e\n\u003chr data-start=\"1484\" data-end=\"1487\"\u003e\n\u003ch2 data-section-id=\"14jk4wc\" data-start=\"1489\" data-end=\"1516\"\u003eSymptoms \/ Fault Codes\u003c\/h2\u003e\n\u003cul data-start=\"1517\" data-end=\"1737\"\u003e\n\u003cli data-section-id=\"1e8aa3i\" data-start=\"1517\" data-end=\"1539\"\u003eCheck engine light\u003c\/li\u003e\n\u003cli data-section-id=\"9918q9\" data-start=\"1540\" data-end=\"1571\"\u003eSCR \/ AdBlue system warning\u003c\/li\u003e\n\u003cli data-section-id=\"1yc5bvo\" data-start=\"1572\" data-end=\"1618\"\u003eNOx sensor communication or signal failure\u003c\/li\u003e\n\u003cli data-section-id=\"4nfzus\" data-start=\"1619\" data-end=\"1676\"\u003eP2200 \/ P229F \/ U029D type codes (platform dependent)\u003c\/li\u003e\n\u003cli data-section-id=\"1q971qf\" data-start=\"1677\" data-end=\"1713\"\u003eReduced engine power (limp mode)\u003c\/li\u003e\n\u003cli data-section-id=\"12mwl3m\" data-start=\"1714\" data-end=\"1737\"\u003eIncreased emissions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1739\" data-end=\"1742\"\u003e\n\u003ch2 data-section-id=\"1exb13b\" data-start=\"1744\" data-end=\"1766\"\u003eOE \/ Part Numbers\u003c\/h2\u003e\n\u003cul data-start=\"1767\" data-end=\"1950\"\u003e\n\u003cli data-section-id=\"sjryyn\" data-start=\"1767\" data-end=\"1783\"\u003eGN1-5H255-AA\u003c\/li\u003e\n\u003cli data-section-id=\"16y0wgm\" data-start=\"1784\" data-end=\"1822\"\u003eIsuzu NOx sensor SCR system family\u003c\/li\u003e\n\u003cli data-section-id=\"hkt8zt\" data-start=\"1823\" data-end=\"1950\"\u003eRelated cross references:\n\u003cul data-start=\"1855\" data-end=\"1950\"\u003e\n\u003cli data-section-id=\"46nl60\" data-start=\"1855\" data-end=\"1871\"\u003e8-98231391-2\u003c\/li\u003e\n\u003cli data-section-id=\"4ef1wi\" data-start=\"1874\" data-end=\"1894\"\u003eA2C15577700-131B\u003c\/li\u003e\n\u003cli data-section-id=\"l9bdcn\" data-start=\"1897\" data-end=\"1950\"\u003eBP146022003 \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1952\" data-end=\"1955\"\u003e\n\u003ch2 data-section-id=\"x9bttf\" data-start=\"1957\" data-end=\"1965\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 data-section-id=\"153fw06\" data-start=\"1967\" data-end=\"2005\"\u003eIs this sensor vehicle-specific?\u003c\/h3\u003e\n\u003cp data-start=\"2006\" data-end=\"2189\"\u003eYes. Isuzu NOx sensors are ECU-calibrated and vary by engine family (commonly 4HK1 \/ 4JJ1). Even small OE differences can change connector type, software mapping, or exhaust position.\u003c\/p\u003e\n\u003ch3 data-section-id=\"18t4fk1\" data-start=\"2191\" data-end=\"2239\"\u003eWhy do Isuzu models share similar sensors?\u003c\/h3\u003e\n\u003cp data-start=\"2240\" data-end=\"2368\"\u003eBecause many Isuzu trucks and commercial vehicles use the same SCR emission architecture across NPR \/ NQR \/ NRR \/ FTR platforms.\u003c\/p\u003e\n\u003ch3 data-section-id=\"txejym\" data-start=\"2370\" data-end=\"2415\"\u003eCan similar OE numbers be used instead?\u003c\/h3\u003e\n\u003cp data-start=\"2416\" data-end=\"2578\"\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":51863383605380,"sku":"GN1-5H255-AA","price":238.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_ba1ccf17-ad28-4355-874c-4efbc2b31f38.jpg?v=1778946963","url":"https:\/\/www.jslook.com\/de\/products\/isuzu-nox-sensor-gn1-5h255-aa","provider":"ASHENG","version":"1.0","type":"link"}