{"nhtsa_id":11035168,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-23","date":"2026-07-18","document_id":"08-285-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: DEF Dosing Control Unit (DCU) Software Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P218F 00 - Reductant No Flow Detected ● P202E 00 - Reductant Injection Valve Circuit Performance In addition, the following software enhancements are available: ● System State feedback fix, data variant selection fix. This bulletin involves reprogramming the DCU software from 5.13 Or 5.14 To 5.15.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035168-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035168-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11035168","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["P202E","P218F"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_2500"]},{"make":"RAM","model":"3500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_3500"]},{"make":"RAM","model":"4500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_4500"]},{"make":"RAM","model":"5500","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ram_5500"]}],"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":[]}