{"product_id":"0431677000-a-genuine-freightliner®-def-header-lever-sending-unit-13-23-g","title":"0431677000-A | Genuine Freightliner® DEF Header Lever Sending Unit 13\/23 G","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA DEF Header \/ Level Sending Unit \u003cstrong\u003e0431677000-A\u003c\/strong\u003e is the main sensor assembly mounted in the Diesel Exhaust Fluid (DEF) tank. It monitors the condition of the DEF and sends that information to the engine computer so the emissions system can work correctly.\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003ePart Number\u003c\/strong\u003e: 0431677000-A, 0431677000A\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Freightliner\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 0431677000-A \u003cspan\u003eFor\u003c\/span\u003e\u003c\/strong\u003e Freightliner Truck: Cascadia 2017, For Detroit Engine: DD15\u003c\/p\u003e\n\u003cul class=\"nav catalog\" id=\"catalogModels\"\u003e\u003c\/ul\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong\u003ePurpose of using 0431677000-A:\u003c\/strong\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-start=\"516\" data-end=\"543\"\u003e\u003cstrong\u003e1. Monitoring DEF Level\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"544\" data-end=\"670\"\u003e\n\u003cli data-start=\"544\" data-end=\"584\"\u003e\n\u003cp data-start=\"546\" data-end=\"584\"\u003eMeasures how much DEF is in the tank\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"585\" data-end=\"626\"\u003e\n\u003cp data-start=\"587\" data-end=\"626\"\u003ePrevents the vehicle from running out\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"627\" data-end=\"670\"\u003e\n\u003cp data-start=\"629\" data-end=\"670\"\u003eSends level data to the dashboard gauge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"672\" data-end=\"758\"\u003eWithout accurate level data, the vehicle may trigger warnings or limit engine restart.\u003c\/p\u003e\n\u003cp data-start=\"765\" data-end=\"794\"\u003e\u003cstrong\u003e2. Monitoring DEF Quality\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"795\" data-end=\"912\"\u003e\n\u003cli data-start=\"795\" data-end=\"832\"\u003e\n\u003cp data-start=\"797\" data-end=\"832\"\u003eChecks urea concentration (32.5%)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"833\" data-end=\"872\"\u003e\n\u003cp data-start=\"835\" data-end=\"872\"\u003eDetects contaminated or diluted DEF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"873\" data-end=\"912\"\u003e\n\u003cp data-start=\"875\" data-end=\"912\"\u003ePrevents damage to the SCR catalyst\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"919\" data-end=\"952\"\u003e\u003cstrong\u003e3. Monitoring DEF Temperature\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"953\" data-end=\"1070\"\u003e\n\u003cli data-start=\"953\" data-end=\"984\"\u003e\n\u003cp data-start=\"955\" data-end=\"984\"\u003eDEF freezes at 12°F (-11°C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"985\" data-end=\"1027\"\u003e\n\u003cp data-start=\"987\" data-end=\"1027\"\u003eSignals the system to activate heaters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1028\" data-end=\"1070\"\u003e\n\u003cp data-start=\"1030\" data-end=\"1070\"\u003ePrevents dosing issues in cold weather\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1077\" data-end=\"1111\"\u003e\u003cstrong\u003e4. Supplying DEF to the System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1112\" data-end=\"1187\"\u003e\n\u003cli data-start=\"1112\" data-end=\"1187\"\u003e\n\u003cp data-start=\"1114\" data-end=\"1187\"\u003eContains the pickup tube that feeds DEF to the pump and dosing injector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad DEF Header Lever Sending Unit 0431677000-A:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-end=\"420\" data-start=\"386\"\u003e\u003cstrong\u003e1. DEF Gauge Reading Incorrect\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"501\" data-start=\"421\"\u003e\n\u003cli data-end=\"448\" data-start=\"421\"\u003e\n\u003cp data-end=\"448\" data-start=\"423\"\u003eShows \u003cstrong data-end=\"448\" data-start=\"429\"\u003eempty when full\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"477\" data-start=\"449\"\u003e\n\u003cp data-end=\"477\" data-start=\"451\"\u003eLevel stuck at one reading\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"501\" data-start=\"478\"\u003e\n\u003cp data-end=\"501\" data-start=\"480\"\u003eJumps around suddenly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"543\" data-start=\"503\"\u003eThis is one of the most common failures.\u003c\/p\u003e\n\u003cp data-end=\"585\" data-start=\"550\"\u003e\u003cstrong\u003e2. “Service DEF System” Message\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"647\" data-start=\"586\"\u003e\n\u003cli data-end=\"620\" data-start=\"586\"\u003e\n\u003cp data-end=\"620\" data-start=\"588\"\u003eAppears even after refilling DEF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"647\" data-start=\"621\"\u003e\n\u003cp data-end=\"647\" data-start=\"623\"\u003eMay not clear on its own\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"682\" data-start=\"654\"\u003e\u003cstrong\u003e3. DEF Countdown Warning\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"763\" data-start=\"683\"\u003e\n\u003cli data-end=\"717\" data-start=\"683\"\u003e\n\u003cp data-end=\"717\" data-start=\"685\"\u003e“No engine restart in ___ miles”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"763\" data-start=\"718\"\u003e\n\u003cp data-end=\"763\" data-start=\"720\"\u003eCountdown continues even with full DEF tank\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"834\" data-start=\"765\"\u003eThis happens because the system can’t confirm fluid level or quality.\u003c\/p\u003e\n\u003cp data-end=\"866\" data-start=\"841\"\u003e\u003cstrong\u003e4. Check Engine Light\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"900\" data-start=\"867\"\u003eCommon trouble codes may include:\u003c\/p\u003e\n\u003cul data-end=\"1021\" data-start=\"901\"\u003e\n\u003cli data-end=\"935\" data-start=\"901\"\u003e\n\u003cp data-end=\"935\" data-start=\"903\"\u003eDEF level sensor circuit codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"968\" data-start=\"936\"\u003e\n\u003cp data-end=\"968\" data-start=\"938\"\u003eDEF temperature sensor codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"997\" data-start=\"969\"\u003e\n\u003cp data-end=\"997\" data-start=\"971\"\u003eDEF quality sensor codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1021\" data-start=\"998\"\u003e\n\u003cp data-end=\"1021\" data-start=\"1000\"\u003eCommunication codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1064\" data-start=\"1028\"\u003e\u003cstrong\u003e5. Incorrect DEF Quality Message\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1127\" data-start=\"1065\"\u003e\n\u003cli data-end=\"1090\" data-start=\"1065\"\u003e\n\u003cp data-end=\"1090\" data-start=\"1067\"\u003e“Incorrect DEF Quality”\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1127\" data-start=\"1091\"\u003e\n\u003cp data-end=\"1127\" data-start=\"1093\"\u003eEven when using fresh, correct DEF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1173\" data-start=\"1134\"\u003e\u003cstrong\u003e6. Reduced Engine Power (Limp Mode)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1216\" data-start=\"1174\"\u003eIf the issue isn’t fixed, the vehicle may:\u003c\/p\u003e\n\u003cul data-end=\"1263\" data-start=\"1217\"\u003e\n\u003cli data-end=\"1230\" data-start=\"1217\"\u003e\n\u003cp data-end=\"1230\" data-start=\"1219\"\u003eLimit speed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1263\" data-start=\"1231\"\u003e\n\u003cp data-end=\"1263\" data-start=\"1233\"\u003ePrevent restart after shutdown\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003eAbout the Manufacturer – Freightliner:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFreightliner\u003c\/strong\u003e is a major American truck manufacturer known for producing reliable, heavy-duty commercial vehicles. Founded in 1942 and now part of Daimler Truck North America, Freightliner builds semi-trucks, vocational trucks, and specialized vehicles widely used in freight transport, construction, and logistics. The brand is recognized for durability, advanced engineering, fuel efficiency, and strong support through a large service and dealer network.\u003c\/p\u003e","brand":"Freightliner","offers":[{"title":"Default Title","offer_id":50523509883127,"sku":"0431677000-A","price":859.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/04-31677-000-genuine-freightliner-def-header-lever-sending-unit-1323-gallon-advanced-truck-parts-75449.webp?v=1772216863","url":"https:\/\/forcetruckparts.com\/products\/0431677000-a-genuine-freightliner%c2%ae-def-header-lever-sending-unit-13-23-g","provider":"Force Truck Parts","version":"1.0","type":"link"}