{"nhtsa_id":10166221,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-10-21","date":"2019-09-06","document_id":"TSB190154-090620","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"This Technical Service Bulletin addresses generator sets that are issuing Fault Code 427 when the generator set runs through the key on sequence. This sequence can occur while powering on or after a test run.This was found to be an error on the ECM (CM850) and the solution is in the updated ECM calibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10166221-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10166221-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10166221","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"C","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":[]}