{"nhtsa_id":10193399,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-05-17","date":"2021-04-30","document_id":"TSB101120-043020","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of engine surge, usually with high counts of Fault Codes 1861, 2776 and/or 3847. The cause is found to be contamination of the air/fuel mixer and partial or complete blockage of the mixer's fuel ports. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193399-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10193399-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10193399","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISB5.9 G","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS WESTPORT","model":"ISL G","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS WESTPORT","model":"ISX12 G","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":[]}