{"product_id":"5502-17-genuine-paccar®-def-heater-control-valve-12v","title":"5502-17 | Genuine Paccar® DEF Coolant Flow Control Solenoid  12V","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA DEF Coolant Flow Control Solenoid \u003cstrong\u003e5502-17\u003c\/strong\u003e is an electrically controlled valve that regulates the flow of engine coolant to parts of the DEF (Diesel Exhaust Fluid) system.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 5502-17\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Paccar\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 5502-17 \u003c\/strong\u003eFor \u003cspan\u003eVarious Peterbilt And Kenworth PACCAR Engines \u003c\/span\u003e\u003cbr\u003e\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 5502-17:\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-end=\"341\" data-start=\"308\"\u003e\u003cstrong\u003e1. Prevents DEF from freezing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"483\" data-start=\"342\"\u003e\n\u003cli data-end=\"375\" data-start=\"342\"\u003e\n\u003cp data-end=\"375\" data-start=\"344\"\u003eDEF freezes at \u003cstrong data-end=\"375\" data-start=\"359\"\u003e12°F (-11°C)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"446\" data-start=\"376\"\u003e\n\u003cp data-end=\"446\" data-start=\"378\"\u003eThe solenoid allows \u003cstrong data-end=\"420\" data-start=\"398\"\u003ehot engine coolant\u003c\/strong\u003e to flow to DEF components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"483\" data-start=\"447\"\u003e\n\u003cp data-end=\"483\" data-start=\"449\"\u003eThaws frozen DEF after cold starts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"576\" data-start=\"485\"\u003e\u003cstrong data-end=\"504\" data-start=\"485\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"507\" data-start=\"504\"\u003eFrozen DEF can’t be pumped or injected → emissions faults and derate.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e2. Maintains proper DEF temperature\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"706\" data-start=\"623\"\u003e\n\u003cli data-end=\"658\" data-start=\"623\"\u003e\n\u003cp data-end=\"658\" data-start=\"625\"\u003eOpens only when heating is needed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"706\" data-start=\"659\"\u003e\n\u003cp data-end=\"706\" data-start=\"661\"\u003eCloses when DEF reaches operating temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"797\" data-start=\"708\"\u003e\u003cstrong data-end=\"727\" data-start=\"708\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"730\" data-start=\"727\"\u003eKeeps DEF within the optimal temperature range for accurate dosing.\u003c\/p\u003e\n\u003cp data-end=\"839\" data-start=\"804\"\u003e\u003cstrong\u003e3. Enables proper SCR operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"938\" data-start=\"840\"\u003e\n\u003cli data-end=\"883\" data-start=\"840\"\u003e\n\u003cp data-end=\"883\" data-start=\"842\"\u003eSCR system relies on correctly heated DEF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"938\" data-start=\"884\"\u003e\n\u003cp data-end=\"938\" data-start=\"886\"\u003eEnsures DEF is injected at the right time and amount\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1029\" data-start=\"940\"\u003e\u003cstrong data-end=\"959\" data-start=\"940\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"962\" data-start=\"959\"\u003eProper SCR operation keeps NOx emissions low and meets regulations.\u003c\/p\u003e\n\u003cp data-end=\"1079\" data-start=\"1036\"\u003e\u003cstrong\u003e4. Prevents engine derate and limp mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1166\" data-start=\"1080\"\u003e\n\u003cli data-end=\"1119\" data-start=\"1080\"\u003e\n\u003cp data-end=\"1119\" data-start=\"1082\"\u003eAvoids DEF heater-related fault codes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1166\" data-start=\"1120\"\u003e\n\u003cp data-end=\"1166\" data-start=\"1122\"\u003eKeeps truck from entering reduced power mode\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1233\" data-start=\"1168\"\u003e\u003cstrong data-end=\"1187\" data-start=\"1168\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"1190\" data-start=\"1187\"\u003eProtects drivability and prevents downtime.\u003c\/p\u003e\n\u003cp data-end=\"1292\" data-start=\"1240\"\u003e\u003cstrong\u003e5. Improves system efficiency and component life\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1409\" data-start=\"1293\"\u003e\n\u003cli data-end=\"1328\" data-start=\"1293\"\u003e\n\u003cp data-end=\"1328\" data-start=\"1295\"\u003eAvoids overheating DEF components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1363\" data-start=\"1329\"\u003e\n\u003cp data-end=\"1363\" data-start=\"1331\"\u003eReduces unnecessary coolant flow\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1409\" data-start=\"1364\"\u003e\n\u003cp data-end=\"1409\" data-start=\"1366\"\u003eProtects DEF pump, lines, and dosing module\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1486\" data-start=\"1411\"\u003e\u003cstrong data-end=\"1430\" data-start=\"1411\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"1433\" data-start=\"1430\"\u003eExtends component life and reduces maintenance costs.\u003c\/p\u003e\n\u003cp data-end=\"1529\" data-start=\"1493\"\u003e\u003cstrong\u003e6. Supports emissions compliance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1616\" data-start=\"1530\"\u003e\n\u003cli data-end=\"1576\" data-start=\"1530\"\u003e\n\u003cp data-end=\"1576\" data-start=\"1532\"\u003eRequired to meet EPA and emissions standards\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1616\" data-start=\"1577\"\u003e\n\u003cp data-end=\"1616\" data-start=\"1579\"\u003eWorks automatically under ECM control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1676\" data-start=\"1618\"\u003e\u003cstrong data-end=\"1637\" data-start=\"1618\"\u003eWhy it matters:\u003c\/strong\u003e\u003cbr data-end=\"1640\" data-start=\"1637\"\u003eKeeps the truck legal and compliant.\u003c\/p\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\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad DEF Coolant Flow Control Solenoid 5502-17:\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=\"324\" data-end=\"360\"\u003e\u003cstrong\u003e1. DEF heater or SCR fault codes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"361\" data-end=\"486\"\u003e\n\u003cli data-start=\"361\" data-end=\"384\"\u003e\n\u003cp data-start=\"363\" data-end=\"384\"\u003eCheck Engine Light on\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"385\" data-end=\"486\"\u003e\n\u003cp data-start=\"387\" data-end=\"486\"\u003eDEF \/ SCR warnings on dash\u003cbr data-start=\"413\" data-end=\"416\"\u003e\u003cstrong data-start=\"416\" data-end=\"424\"\u003eWhy:\u003c\/strong\u003e The ECM detects improper DEF temperature or heater operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"493\" data-end=\"526\"\u003e\u003cstrong\u003e2. Engine derate or limp mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"527\" data-end=\"631\"\u003e\n\u003cli data-start=\"527\" data-end=\"542\"\u003e\n\u003cp data-start=\"529\" data-end=\"542\"\u003eReduced power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"543\" data-end=\"631\"\u003e\n\u003cp data-start=\"545\" data-end=\"631\"\u003eSpeed limited after countdown\u003cbr data-start=\"574\" data-end=\"577\"\u003e\u003cstrong data-start=\"577\" data-end=\"585\"\u003eWhy:\u003c\/strong\u003e DEF system can’t meet emissions requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"638\" data-end=\"670\"\u003e\u003cstrong\u003e3. DEF system not warming up\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"671\" data-end=\"804\"\u003e\n\u003cli data-start=\"671\" data-end=\"705\"\u003e\n\u003cp data-start=\"673\" data-end=\"705\"\u003eDEF stays cold in freezing temps\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"706\" data-end=\"804\"\u003e\n\u003cp data-start=\"708\" data-end=\"804\"\u003eDEF tank heater ineffective\u003cbr data-start=\"735\" data-end=\"738\"\u003e\u003cstrong data-start=\"738\" data-end=\"746\"\u003eWhy:\u003c\/strong\u003e Solenoid stuck closed—coolant can’t reach DEF components.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"811\" data-end=\"847\"\u003e\u003cstrong\u003e4. DEF overheating (less common)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"848\" data-end=\"964\"\u003e\n\u003cli data-start=\"848\" data-end=\"874\"\u003e\n\u003cp data-start=\"850\" data-end=\"874\"\u003eDEF temperature too high\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"875\" data-end=\"964\"\u003e\n\u003cp data-start=\"877\" data-end=\"964\"\u003eRepeated heater-related faults\u003cbr data-start=\"907\" data-end=\"910\"\u003e\u003cstrong data-start=\"910\" data-end=\"918\"\u003eWhy:\u003c\/strong\u003e Solenoid stuck open—coolant flows constantly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"971\" data-end=\"1013\"\u003e\u003cstrong\u003e5. Frozen DEF messages in cold weather\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1014\" data-end=\"1120\"\u003e\n\u003cli data-start=\"1014\" data-end=\"1120\"\u003e\n\u003cp data-start=\"1016\" data-end=\"1120\"\u003e“DEF Frozen” or “DEF Heater Fault” warnings\u003cbr data-start=\"1059\" data-end=\"1062\"\u003e\u003cstrong data-start=\"1062\" data-end=\"1070\"\u003eWhy:\u003c\/strong\u003e Coolant heat never reaches the DEF tank or lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1127\" data-end=\"1161\"\u003e\u003cstrong\u003e6. Poor DEF dosing performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1162\" data-end=\"1288\"\u003e\n\u003cli data-start=\"1162\" data-end=\"1189\"\u003e\n\u003cp data-start=\"1164\" data-end=\"1189\"\u003eIncreased DEF consumption\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1190\" data-end=\"1288\"\u003e\n\u003cp data-start=\"1192\" data-end=\"1288\"\u003eNOx efficiency codes\u003cbr data-start=\"1212\" data-end=\"1215\"\u003e\u003cstrong data-start=\"1215\" data-end=\"1223\"\u003eWhy:\u003c\/strong\u003e DEF temperature not in the correct range for accurate injection.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1295\" data-end=\"1333\"\u003e\u003cstrong\u003e7. No clicking sound from solenoid\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1334\" data-end=\"1444\"\u003e\n\u003cli data-start=\"1334\" data-end=\"1444\"\u003e\n\u003cp data-start=\"1336\" data-end=\"1444\"\u003eNo audible click when commanded on\/off\u003cbr data-start=\"1374\" data-end=\"1377\"\u003e\u003cstrong data-start=\"1377\" data-end=\"1385\"\u003eWhy:\u003c\/strong\u003e Electrical failure inside the solenoid or no power\/ground.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1451\" data-end=\"1489\"\u003e\u003cstrong\u003e8. Coolant leaks near the solenoid\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1490\" data-end=\"1588\"\u003e\n\u003cli data-start=\"1490\" data-end=\"1515\"\u003e\n\u003cp data-start=\"1492\" data-end=\"1515\"\u003eVisible coolant residue\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1516\" data-end=\"1588\"\u003e\n\u003cp data-start=\"1518\" data-end=\"1588\"\u003eLow coolant level\u003cbr data-start=\"1535\" data-end=\"1538\"\u003e\u003cstrong data-start=\"1538\" data-end=\"1546\"\u003eWhy:\u003c\/strong\u003e Internal seal failure or cracked housing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1595\" data-end=\"1624\"\u003e\u003cstrong\u003e9. Electrical fault codes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1625\" data-end=\"1714\"\u003e\n\u003cli data-start=\"1625\" data-end=\"1714\"\u003e\n\u003cp data-start=\"1627\" data-end=\"1714\"\u003eOpen circuit \/ short to ground codes\u003cbr data-start=\"1663\" data-end=\"1666\"\u003e\u003cstrong data-start=\"1666\" data-end=\"1674\"\u003eWhy:\u003c\/strong\u003e Failed solenoid coil or damaged wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1721\" data-end=\"1748\"\u003e\u003cstrong\u003e10. Intermittent issues\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1749\" data-end=\"1860\"\u003e\n\u003cli data-start=\"1749\" data-end=\"1860\"\u003e\n\u003cp data-start=\"1751\" data-end=\"1860\"\u003eWorks sometimes, fails other times\u003cbr data-start=\"1785\" data-end=\"1788\"\u003e\u003cstrong data-start=\"1788\" data-end=\"1796\"\u003eWhy:\u003c\/strong\u003e Solenoid sticking internally due to contamination or corrosion.\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=\"476\" data-start=\"97\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAbout the Manufacturer – \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003ePaccar:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"381\" data-start=\"0\"\u003e\u003cstrong data-start=\"96\" data-end=\"110\"\u003ePACCAR Inc\u003c\/strong\u003e is a global technology leader in the design, manufacture, and customer support of premium light-, medium-, and heavy-duty trucks. Founded in 1905 and headquartered in Bellevue, Washington, PACCAR is best known for its world-class truck brands: Kenworth, Peterbilt, and DAF.\u003cbr\u003ePACCAR’s trucks are recognized for their durability, fuel efficiency, advanced engineering, and driver-focused technology. In addition to truck manufacturing, PACCAR also designs and builds diesel engines, and provides financial services, information technology, and aftermarket support to its global customer base.\u003c\/p\u003e","brand":"Paccar","offers":[{"title":"Default Title","offer_id":50472659026167,"sku":"5502-17","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/1862332507.jpg?v=1770158022","url":"https:\/\/forcetruckparts.com\/products\/5502-17-genuine-paccar%c2%ae-def-heater-control-valve-12v","provider":"Force Truck Parts","version":"1.0","type":"link"}