Swivel valve may allow loss of pressure/fmvss 121
Defect Summary
Proterra, inc. (proterra) is recalling certain 2017-2018 catalyst buses. The vehicles are equipped with swivel valves that may insufficiently protect the air brake system from an air leak between the service reservoir and the source of air pressure. as such, these vehicles fail to comply with the requirements of federal motor vehicle safety standard (fmvss) number 121, "air brake systems."
Safety Consequence
If the swivel valves are unable to protect the air brake system against loss of air pressure, this may lead to service brake failure and the possibility for the uncontrolled application of the safety brake. either condition increases the risk of crash.
Corrective Action
Proterra will notify owners, and will replace the swivel valve with a check valve that is sufficient to protect the air brake system, free of charge. the recall began july 26, 2019. owners may contact proterra customer service at 1-864-438-0000.
Similar Recalls
Other recalls from Proterra Operating Company, Inc. or involving Service Brakes, Air.
FAQ: Recall 19V402000
Your rights, the repair process, and what each field on this page means.
What is recall 19V402000?
NHTSA recall 19V402000 was issued by Proterra Operating Company, Inc. on May 30, 2019. It addresses: Swivel valve may allow loss of pressure/fmvss 121. The recall affects approximately 147 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Proterra Operating Company, Inc. dealer and reference NHTSA recall ID 19V402000 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.