{"nhtsa_id":10173038,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-04-01","date":"2020-03-19","document_id":"167B2003-1","mfr_campaign":null,"replaces":null,"component":"FUEL SYSTEM, DIESEL","mfr_system":null,"summary":"SB-20-001 If a truck comes to the dealer with a MIL lamp illuminated with the Diagnostic Trouble Code (DTC): P0421 –Determination of ATC Deterioration. Certain 16MY-20MYCab-Over Engine (COE) Trucks equipped with a J05 engine or Conventional Trucks equipped with a J08 engine.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173038-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10173038-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10173038","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P0421"],"topics":[],"vehicles":[{"make":"HINO","model":"HINO","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":[]}