{"nhtsa_id":10085561,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-12-06","date":"2013-08-13","document_id":"C1387","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS CAMPAIGN ADDRESSES FAULT CODE 3569 OCCURRENCES ON CERTAIN AFTERTREATMENT SYSTEMS THAT MAY LEAD TO FAILED DIESEL EMISSIONS FLUID (DEF) DOSING VALVES IN TRANSIT BUS APPLICATIONS. THE REROUTING OF COOLANT LINES TO THE DOSING VALVE HAS BEEN DETERMINED TO REDUCE FAULT CODE 3569.","document":null,"url":"https://open.wenmarpro.com/bulletins/10085561","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISL9","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":[]}