Freightliner Sprinter 1500 2019–2024 — technical service bulletin
Bulletin LI49.20-N-079157_6 · NHTSA communication 11019973 · issued Jun 24, 2025
Technical service bulletin
communication type
Electrical System
component
2019–2024
model years
36
vehicle entries
Official summary
Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the Adblue System: •P20F409: The Adblue consumption is too low. There is a component fault. •P202E84: The Adblue metering valve 1 (Motor side) has a malfunction. There is a signal below the permissible limit value. Cause The potential causes for these fault codes are: A. A leak in the Adblue System B. An internal fault with the Adblue Injection Valve #1 (Motor side) C. An air pocket forming in the Adblue Injection Valve #1 (Motor side) Adblue Injector Line Remedy Vehicles Produced
Vehicles covered
- 2021 Freightliner Sprinter 1500
- 2022 Freightliner Sprinter 1500
- 2023 Freightliner Sprinter 1500
- 2024 Freightliner Sprinter 1500
- 2021 Freightliner Sprinter 2500
- 2022 Freightliner Sprinter 2500
- 2023 Freightliner Sprinter 2500
- 2024 Freightliner Sprinter 2500
- 2021 Freightliner Sprinter 3500
- 2022 Freightliner Sprinter 3500
- 2023 Freightliner Sprinter 3500
- 2024 Freightliner Sprinter 3500
- 2021 Freightliner Sprinter 4500
- 2022 Freightliner Sprinter 4500
- 2023 Freightliner Sprinter 4500
- 2024 Freightliner Sprinter 4500
- 2019 Freightliner Sprinter (VS30)
- 2020 Freightliner Sprinter (VS30)
- 2021 Mercedes-Benz Sprinter 1500
- 2022 Mercedes-Benz Sprinter 1500
- 2023 Mercedes-Benz Sprinter 1500
- 2024 Mercedes-Benz Sprinter 1500
- 2021 Mercedes-Benz Sprinter 2500
- 2022 Mercedes-Benz Sprinter 2500
- 2023 Mercedes-Benz Sprinter 2500
- 2024 Mercedes-Benz Sprinter 2500
- 2021 Mercedes-Benz Sprinter 3500
- 2022 Mercedes-Benz Sprinter 3500
- 2023 Mercedes-Benz Sprinter 3500
- 2024 Mercedes-Benz Sprinter 3500
- 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.