{"nhtsa_id":10084607,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-11-22","date":"2014-05-23","document_id":"T1382A","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS TEMPORARY REPAIR PRACTICE ADDRESSES FAULT CODE 3568 OCCURANCES ON ENGINES IN ALL PETERBILT AND KENWORTH VEHICLES WITH A PARTICULAR EXHAUST/AFTERTREATMENT CONFIGURATION. THIS ACTION WILL MITIGATE FAILURES CAUSED BY UREA CRYSTALLIZATION INSIDE THE DIESEL EXHAUST FLUID (DEF) DOING VALVE. THIS IS A REVISION TO A PREVIOUS COMMUNICATION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10084607","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISX15","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}