{"nhtsa_id":10054570,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-02-05","date":"2013-10-07","document_id":"TIB-43-032","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"KENWORTH: SOME VEHICLES HAVE DEF LINES ROUTED INCORRECTLY. ERROR CODES P3859 (MX ENGINE) AND P3568 (CUMMINS), DEF DOSER IS NOT RESPONDING OR IS OUT OF ADJUSTMENT FAULT. MODEL INCLUDES T660/T700 AERO MANUFACTURED BEGINNING 04/08/2013 ENDING 06/28/2013. *JS","document":null,"url":"https://open.wenmarpro.com/bulletins/10054570","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":["P3568","P3859"],"topics":[],"vehicles":[{"make":"KENWORTH","model":"KENWORTH","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":[]}