{"nhtsa_id":11037910,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-10-05","date":"2026-09-15","document_id":"TSB260138","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 of certain X15N engines which may contain a defect, resulting in fault code 5878 logging during motoring conditions when using the accelerator pedal to deactivate the engine brakes and continuing to motor downhill.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037910-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037910-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037910","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"X15N","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":[]}