{"nhtsa_id":11018649,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-29","date":"2025-05-23","document_id":"9100598","mfr_campaign":null,"replaces":null,"component":"ENGINE; UNKNOWN OR OTHER","mfr_system":"Urea Pump Level Module","summary":"Module, Urea Pump/Level: HD 6.7L (ETL/ETN/ETM) with Mil On P21C4-00 (Reductant Line Heater Relay Control Circuit High / U11C1-00 (Reductant Control Module Received Implausible Data From ECM/PCM), do not replace the DEF Pump. Follow TSB's released and appropriate Service Diagnostics.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018649-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018649-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018649","components":[{"id":"engine","name":"Engine","parent":null}],"codes":["P21C4"],"topics":[],"vehicles":[{"make":"RAM","model":"2500","year_from":2019,"year_to":2024,"match":"exact","vehicle_ids":["2019_ram_2500","2020_ram_2500","2021_ram_2500","2022_ram_2500","2023_ram_2500","2024_ram_2500"]},{"make":"RAM","model":"3500","year_from":2019,"year_to":2024,"match":"exact","vehicle_ids":["2019_ram_3500","2020_ram_3500","2021_ram_3500","2022_ram_3500","2023_ram_3500","2024_ram_3500"]},{"make":"RAM","model":"4500","year_from":2019,"year_to":2024,"match":"exact","vehicle_ids":["2019_ram_4500","2020_ram_4500","2021_ram_4500","2022_ram_4500","2023_ram_4500","2024_ram_4500"]},{"make":"RAM","model":"5500","year_from":2019,"year_to":2024,"match":"exact","vehicle_ids":["2019_ram_5500","2020_ram_5500","2021_ram_5500","2022_ram_5500","2023_ram_5500","2024_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":[]}