{"nhtsa_id":11025201,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-11-07","date":"2025-10-08","document_id":"SB25-L-001","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM; ENGINE","mfr_system":"ENGINE, FUEL, EXHAUST","summary":"SERVICE BULLETIN: THE ENGINE CONTROL MODULE AND THE DIESEL EXHAUST FLUID CONTROL UNIT OF CERTAIN 2025MY N-DIESEL VEHICLES CONTAINED INCORRECT LOGIC THAT MAY UNNECESSARILY CAUSE DTC P2201 NOX SENSOR CIRCUIT PERFORMANCE SENSOR 1 TO SET AND ILLUMINATE THE MALFUNCTION INDICATOR LIGHT. THIS DTC MAY BE RESOLVED BY REPROGRAMMING BOTH ECM AND THE DCU WITH REVISED SERVICE CALIBRATIONS.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025201-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11025201-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11025201","components":[{"id":"engine","name":"Engine","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P2201"],"topics":[],"vehicles":[{"make":"ISUZU","model":"N-SERIES","year_from":2025,"year_to":2025,"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":[]}