{"nhtsa_id":11034409,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-02","date":"2026-06-03","document_id":"LI09.40-N-079144","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM","mfr_system":null,"summary":"Complaint The check engine light is activated, accompanied by one or more of the following fault codes related to the Boost Pressure Positioner: • P300A6D The boost pressure is too low. Charge Air Cooler. • P300974 Component 'Boost pressure positioner' has a malfunction. The boost pressure is too low. • P300DFB Component 'Boost pressure positioner' has a malfunction. • P300DE8 Boost pressure control A has a malfunction after the cold start. Cause The potential causes for these fault codes are: A. Leak or Blockage in the Intake or Charge Air System: This can prevent the proper flow of air, affecting the boost pressure. B. Insufficient Source Vacuum, Vacuum Leak, or Sticking/Weak Vacuum Component: These issues can prevent the boost pressure positioner from functioning correctly. • For Model Year 2023-Cuurent vehicles operating at approximately 4,000 ft elevation or above, reduced ambient pressure and/or high brake demand may contribute to reduced available vacuum differential and under boost com-plaints, even when no discrete vacuum component failure is identified. C. Internal Malfunction of the Boost Pressure Positioner: The component itself may be faulty. D. Internal Defect with the Variable Turbine Geometry (VTG) System inside the Turbocharger: Issues within the turbo-charger can affect boost pressure control. Remedy A. Leak or Blockage in the Intake or Charge Air System 1. Perform a Pressurized Smoke Test: •Conduct a smoke test on the intake, the charge air system, and the exhaust to identify any leaks.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034409-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034409-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034409","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":["P3009","P300A","P300D"],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"SPRINTER 1500","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 2500","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 3500","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"FREIGHTLINER","model":"SPRINTER 4500","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["2023_freightliner_sprinter","2024_freightliner_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 1500","year_from":2023,"year_to":2025,"match":"base","vehicle_ids":["2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter","2025_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 2500","year_from":2023,"year_to":2025,"match":"base","vehicle_ids":["2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter","2025_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 3500","year_from":2023,"year_to":2025,"match":"base","vehicle_ids":["2023_mercedes-benz_sprinter","2024_mercedes-benz_sprinter","2025_mercedes-benz_sprinter"]},{"make":"MERCEDES-BENZ","model":"SPRINTER 4500","year_from":2023,"year_to":2024,"match":"base","vehicle_ids":["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":[]}