{"nhtsa_id":11026085,"type":"service_campaign","type_name":"Service campaign","date_added":"2025-12-03","date":"2025-11-11","document_id":"C7171","mfr_campaign":"C7171","replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Warranty Field Campaign is being issued to address a potential concern for engine performance relative to the Wastegate Control System functionality on certain X15N engines. This field action authorizes certified repair locations to replace the Wastegate Control Block to the latest design and update the Engine Control Module calibration on eligible engines. This field action provides retroactive coverage for repairs made in anticipation of and prior to the release of this publication. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026085-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026085-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026085","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":[]}