Freightliner Sprinter 1500 2019–2024 — technical service bulletin
Bulletin LI49.20-N-078838 · NHTSA communication 11016429 · issued Mar 18, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2019–2024
model years
52
vehicle entries
Official 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 Cause: A. The software for the AdBlue (SCR) control unit (N118/5) is outdated.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
Vehicles covered
- 2019 Freightliner Sprinter 1500
- 2020 Freightliner Sprinter 1500
- 2021 Freightliner Sprinter 1500
- 2022 Freightliner Sprinter 1500
- 2023 Freightliner Sprinter 1500
- 2024 Freightliner Sprinter 1500
- 2019 Freightliner Sprinter 2500
- 2020 Freightliner Sprinter 2500
- 2021 Freightliner Sprinter 2500
- 2022 Freightliner Sprinter 2500
- 2023 Freightliner Sprinter 2500
- 2024 Freightliner Sprinter 2500
- 2019 Freightliner Sprinter 3500
- 2020 Freightliner Sprinter 3500
- 2021 Freightliner Sprinter 3500
- 2022 Freightliner Sprinter 3500
- 2023 Freightliner Sprinter 3500
- 2024 Freightliner Sprinter 3500
- 2019 Freightliner Sprinter 4500
- 2020 Freightliner Sprinter 4500
- 2021 Freightliner Sprinter 4500
- 2022 Freightliner Sprinter 4500
- 2023 Freightliner Sprinter 4500
- 2024 Freightliner Sprinter 4500
- 2019 Freightliner Sprinter (VS30)
- 2020 Freightliner Sprinter (VS30)
- 2019 Mercedes-Benz Sprinter 1500
- 2020 Mercedes-Benz Sprinter 1500
- 2021 Mercedes-Benz Sprinter 1500
- 2022 Mercedes-Benz Sprinter 1500
- 2023 Mercedes-Benz Sprinter 1500
- 2024 Mercedes-Benz Sprinter 1500
- 2019 Mercedes-Benz Sprinter 2500
- 2020 Mercedes-Benz Sprinter 2500
- 2021 Mercedes-Benz Sprinter 2500
- 2022 Mercedes-Benz Sprinter 2500
- 2023 Mercedes-Benz Sprinter 2500
- 2024 Mercedes-Benz Sprinter 2500
- 2019 Mercedes-Benz Sprinter 3500
- 2020 Mercedes-Benz Sprinter 3500
- 2021 Mercedes-Benz Sprinter 3500
- 2022 Mercedes-Benz Sprinter 3500
- 2023 Mercedes-Benz Sprinter 3500
- 2024 Mercedes-Benz Sprinter 3500
- 2019 Mercedes-Benz Sprinter 4500
- 2020 Mercedes-Benz Sprinter 4500
- 2021 Mercedes-Benz Sprinter 4500
- 2022 Mercedes-Benz Sprinter 4500
- 2023 Mercedes-Benz Sprinter 4500
- 2024 Mercedes-Benz Sprinter 4500
- 2019 Mercedes-Benz Sprinter (VS30)
- 2020 Mercedes-Benz Sprinter (VS30)
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.