{"nhtsa_id":10185621,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-01-19","date":"2014-10-31","document_id":"TT-14-026","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM","mfr_system":null,"summary":"When diagnosing a concern with the SCR system, the technician may notice crystallized DEF (diesel exhaust fluid) on the tip of the DEF injector. Crystallized DEF on the tip of the injector is a normal occurrence and does not indicate that the injector nozzle is clogged. The crystallization will dissolve when the injector is activated. Do not replace the DEF injector for the crystallization alone. Please follow Workshop Manual diagnostics to diagnose the specific condition or DTC on the vehicle.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10185621-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10185621-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10185621","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"fuel-injector","name":"Fuel injection","parent":"fuel-system"}],"codes":[],"topics":[],"vehicles":[{"make":"HINO","model":"CAB-OVER","year_from":2013,"year_to":2015,"match":null,"vehicle_ids":[]},{"make":"HINO","model":"CONVENTIONAL MODELS","year_from":2011,"year_to":2015,"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":[]}