{"nhtsa_id":11019290,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-06-06","date":"2025-05-30","document_id":"TSB190022","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution steps for the engine control module calibration for L9 engine powered refuse trucks operating at an altitude greater than 1220 m (4000 ft) which may be incorrect, resulting in fault codes 2639, 1921, or 1922 being set (all fault codes are related to high soot load). This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019290-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11019290-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11019290","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"L9","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":[]}