{"nhtsa_id":10206509,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-01-18","date":"2021-12-10","document_id":"TSB210272-121020","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)","mfr_system":null,"summary":"This Technical Service Bulletin describes the process to re-enable Fault Code 6637 after an Engine Control Module (ECM) Calibration Code Update. This Fault Code was previously disabled.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206509-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10206509-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10206509","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":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12","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":[]}