New Flyer recall: Engine and engine cooling
What is wrong
New Flyer of America, Inc. (New Flyer) is recalling certain 2021 XD35 and XD40 vehicles equipped with 2021 Model Year Cummins L9 Diesel Engines. The engine calibration software's management of the injection of Diesel Exhaust Fluid can allow excessive ammonia to be emitted from tailpipe exhaust.
What could happen
Exposure to high levels of ammonia can increase the risk of injury.
The fix
Cummins will recalibrate the engine, free of charge. Owner notification letters were mailed on July 23, 2021. Owners may contact New Flyer's customer service at 1-800-204-224-6706. New Flyer's number for this recall is R21-013.
Vehicles covered
- New Flyer Xd35 2021
- New Flyer Xd40 2021
Facts
- NHTSA recall number
- 21V532000
- Type
- Vehicle
- Filed by
- New Flyer Of America, Inc.
- Reported to NHTSA
- Jul 14, 2021
- Owners notified
- Jul 23, 2021
- Vehicles or items affected
- 28
- Started by
- The manufacturer
- Built
- –
- Part
- Engine and engine cooling › Exhaust system › Manifold/header/muffler/tail pipe
- Maker's own recall number
- R21-013
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Other recalls for the same vehicles
- New Flyer recall: Electronic stability control (esc) Dec 19, 2025
- New Flyer recall: Fuel system, diesel Feb 3, 2025
- New Flyer recall: Fuel system, diesel Jun 11, 2024
- New Flyer recall: Vehicle speed control Dec 22, 2023
- New Flyer recall: Power train Oct 26, 2023
- New Flyer recall: Equipment Oct 20, 2023
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.