{"product_id":"4384138-genuine-cummins®-differential-pressure-sensor","title":"4384138 | Genuine Cummins® Differential Pressure Sensor","description":"\u003cdiv class=\"ftp-desc\"\u003e\n\u003cp\u003eA Differential Pressure Sensor\u003cstrong\u003e 4384138 \u003c\/strong\u003eis a key emissions sensor on diesel vehicles. It helps the engine computer decide how full the Diesel Particulate Filter (DPF) is and when to clean it. Differential Pressure Sensor For 6.7L ISB, QSB, ISX12, and ISX15 series \u003cstrong\u003eCummins Engines:\u003c\/strong\u003e 6C8.3, C GAS PLUS CM556, G8.3, G8.3 CM558, GTA8.3 CM558, ISC CM2150, ISC CM554, ISC CM850, ISC8.3 CM2250, ISC8.3 G CM2180 C101, ISL CM2150, ISL CM554, ISL CM850, ISL G CM2180, ISL8.9 CM2150 L110, ISL8.9 CM2880 L112, ISL9 CM2150 SN, ISL9 CM2250, ISL9 CM2350 L101, ISL9 CM2350 L111, ISLE4 CM850, L GAS PLUS CM556, L8.9, L8.9 L121, L8.9G CMOH2.0 L125B, L9 CM2350 L116B, L9 CM2350 L119B, L9 CM2350 L120C, L9 CM2350 L123B, L9.3 L105, L9.5 L117, L9N CM2380 L124B, QSC8.3 CM2250, QSC8.3 CM2880 C102, QSC8.3 CM554, QSC8.3 CM850(CM2850), QSL9 CM2250, QSL9 CM2250 L115, QSL9 CM2350 L102, QSL9 CM2350 L107, QSL9 CM2350 L118, QSL9 CM2350 L122, QSL9 CM554, QSL9 CM850(CM2850), QSL9 G CM558, QSL9 M CM2250 L106, QSL9.3 CM2880 L113\u003c\/p\u003e\n\u003ch3\u003eGeneral Specifications\u003c\/h3\u003e\n\u003cdiv class=\"ftp-table-wrap\"\u003e\u003ctable class=\"ftp-spec\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCondition\u003c\/th\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003e4384138\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCummins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3\u003ePurpose \u0026amp; Function\u003c\/h3\u003e\n\u003ch4\u003e1. Measure DPF soot buildup\u003c\/h4\u003e\n\u003cp\u003eThe sensor tells the engine computer:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHow hard exhaust is pushing \u003cstrong\u003ebefore\u003c\/strong\u003e the DPF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow free-flowing it is \u003cstrong\u003eafter\u003c\/strong\u003e the DPF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003epressure difference\u003c\/strong\u003e directly shows \u003cstrong\u003ehow full of soot the DPF is\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch4\u003e2. Control DPF regeneration\u003c\/h4\u003e\n\u003cp\u003eUsing the sensor data, the ECM decides:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhen to start regeneration\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow long regeneration should last\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhen regeneration is complete\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis prevents:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eRegenerating too early (wastes fuel)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRegenerating too late (plugs the DPF)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e3. Protect the engine \u0026amp; exhaust system\u003c\/h4\u003e\n\u003cp\u003eIf restriction gets too high, the sensor helps the ECM:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eReduce engine power (derate)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrevent turbo damage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid overheating the exhaust\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e4. Maintain emissions compliance\u003c\/h4\u003e\n\u003cp\u003eThe sensor ensures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSoot is properly burned off\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExhaust emissions stay within legal limits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe vehicle meets environmental regulations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e5. Alert the driver \u0026amp; store fault codes\u003c\/h4\u003e\n\u003cp\u003eThe sensor allows the ECM to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTurn on the DPF or check engine light\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStore diagnostic trouble codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTell technicians what’s wrong\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSigns of a Differential Pressure Sensor\u003c\/h3\u003e\n\u003ch4\u003eWarning lights \u0026amp; messages\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDPF warning light\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCheck Engine Light\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMessages like \u003cem\u003e“Service Exhaust System”\u003c\/em\u003e or \u003cem\u003e“DPF Full”\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRegeneration problems\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRegenerations happen too often\u003c\/strong\u003e (wastes fuel)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRegeneration never completes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVehicle asks for \u003cstrong\u003eforced\/manual regeneration\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStrong exhaust smell during regens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePerformance issues\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced power \/ derate mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLimited vehicle speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePoor throttle response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLower fuel economy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eComputer \u0026amp; diagnostic symptoms\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eFault codes related to:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDifferential pressure signal too high or too low\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSensor range\/performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDPF efficiency errors caused by bad readings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScan tool shows \u003cstrong\u003epressure readings that don’t make sense\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh pressure at idle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo change when revving the engine\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eElectrical symptoms\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eIntermittent issues (comes and goes)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCodes return immediately after clearing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eScan tool sometimes can’t read the sensor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAbout Cummins\u003c\/h3\u003e\n\u003cp\u003eCummins is a leading American manufacturer of diesel and natural gas engines, as well as power generation systems and emissions solutions. Founded in 1919 and headquartered in Columbus, Indiana, Cummins is known globally for its durable, high-performance engines used in trucks, buses, construction equipment, agriculture, and power systems.\u003c\/p\u003e\n\u003cp\u003eThe brand is widely respected for its innovation in clean diesel technology, including aftertreatment systems, turbochargers, and advanced electronics that help reduce emissions while maximizing engine efficiency and reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":51307917312247,"sku":"4384138","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/4384687-genuine-cummins-r-differential-pressure-sensor-advanced-truck-parts-5_2048x2048_ed03af5a-61f4-4e30-bbbe-3f4fe2efdcd5.webp?v=1791933192","url":"https:\/\/forcetruckparts.com\/products\/4384138-genuine-cummins%c2%ae-differential-pressure-sensor","provider":"Force Truck Parts","version":"1.0","type":"link"}