{"nhtsa_id":10184726,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-12-28","date":"2020-11-20","document_id":"S2008000186","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Engine Control Module (ECM) Flash Failure, Diagnostic Trouble Code (DTC) U1601 ? ECU Application Software Code 1 Missing Or Corrupted","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10184726-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10184726-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10184726","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"engine-control-module","name":"Engine control module","parent":"engine"}],"codes":["U1601"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_ram_2500","2020_ram_2500"]},{"make":"RAM","model":"3500","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_ram_3500","2020_ram_3500"]},{"make":"RAM","model":"4500","year_from":2019,"year_to":2020,"match":"exact","vehicle_ids":["2019_ram_4500","2020_ram_4500"]}],"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":[]}