{"nhtsa_id":11030945,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-07","date":"2026-03-13","document_id":"TSB170085","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of fault code 5867 (Aftertreatment Diesel Exhaust Fluid Dosing Unit Relay Feedback- Voltage Below Normal or Shorted to Low Source) often leading to unnecessary replacement of Original Equipment Manufacturer (OEM) diesel exhaust fluid (DEF) pump relay or other components. This is an update to a previous communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030945-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11030945-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11030945","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"B6.7","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"L9","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"X12","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"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":[]}