{"nhtsa_id":10204431,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-08","document_id":"TSB210054-110820","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of false occurrences of Fault Code 555 or 556 when the Fault Code 555 or 556 is active or has more than one inactive count within the last 25 engine operating hours due to an incorrect calibration code. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204431-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204431-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204431","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"X15","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":[]}