{"nhtsa_id":11016429,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-04-03","date":"2025-03-18","document_id":"LI49.20-N-078838","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM","mfr_system":null,"summary":"Check engine light or Adblue warning with fault codes P206B31, P203B31, or P300494 when outside temperatures are below 32 degrees Fahrenheit. SCR Gen4 (KP7) Complaint: The check engine light or AdBlue warning is activated, accompanied by one or more of the following fault codes rela- ted to the AdBlue tank: P206B31: Malfunction of the concentration sensor for AdBlue; the signal is absent. P203B31: Malfunction of the AdBlue fill level sensor; the signal is absent. P300494: The quality of the AdBlue is insufficient. Cause: A. The software for the AdBlue (SCR) control unit (N118/5) is outdated. B. The concentration of AdBlue is either above or below the Mercedes-Benz specifications, which can lead to prema- ture freezing. C. Frozen or partially frozen AdBlue can cause the AdBlue level sensor to misread levels. D. The AdBlue level sensor is damaged.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016429-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11016429-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11016429","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P203B","P206B","P3004"],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"SPRINTER (VS30)","year_from":2019,"year_to":2020,"match":"base","vehicle_ids":["2019_freightliner_sprinter","2020_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 1500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_freightliner_sprinter","2020_freightliner_sprinter","2021_freightliner_sprinter","2022_freightliner_sprinter","2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 2500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_freightliner_sprinter","2020_freightliner_sprinter","2021_freightliner_sprinter","2022_freightliner_sprinter","2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 3500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_freightliner_sprinter","2020_freightliner_sprinter","2021_freightliner_sprinter","2022_freightliner_sprinter","2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 4500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_freightliner_sprinter","2020_freightliner_sprinter","2021_freightliner_sprinter","2022_freightliner_sprinter","2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER (VS30)","year_from":2019,"year_to":2020,"match":"base","vehicle_ids":["2019_mercedes-benz_sprinter","2020_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 1500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_mercedes-benz_sprinter","2020_mercedes-benz_sprinter","2021_mercedes-benz_sprinter","2022_mercedes-benz_sprinter","2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 2500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_mercedes-benz_sprinter","2020_mercedes-benz_sprinter","2021_mercedes-benz_sprinter","2022_mercedes-benz_sprinter","2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 3500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_mercedes-benz_sprinter","2020_mercedes-benz_sprinter","2021_mercedes-benz_sprinter","2022_mercedes-benz_sprinter","2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 4500","year_from":2019,"year_to":2024,"match":"base","vehicle_ids":["2019_mercedes-benz_sprinter","2020_mercedes-benz_sprinter","2021_mercedes-benz_sprinter","2022_mercedes-benz_sprinter","2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter"]}],"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":[]}