{"nhtsa_id":10169297,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-12-16","date":"2019-11-25","document_id":"TSB190202-112520","mfr_campaign":null,"replaces":null,"component":"ENGINE; FUEL SYSTEM, DIESEL","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of incorrectly replaced aftertreatment diesel exhaust fluid (DEF) dosing units. Multiple \"trouble not found\" aftertreatment DEF dosing units have been returned from the field due to being replaced while troubleshooting Fault Codes 3558 and/or 3559. Neither a good or malfunctioning aftertreatment DEF dosing unit can cause Fault Codes 3558 or 3559 to come active as these fault codes are isolated within the OEM wiring harness.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169297-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169297-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10169297","components":[{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"B6.7","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"L9","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"X12","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"X15","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":[]}