NHTSA campaign 22V553000 · Manufacturer campaign FL-949
Thomas Built Buses Recall 22V-553: Electrical Short Circuit May Cause Engine Stall
NHTSA recall 22V553000 (Manufacturer campaign FL-949) was reported by Daimler Trucks North America, LLC on July 29, 2022, with 71 vehicles potentially affected (per NHTSA). NHTSA's record lists the Thomas Built Buses SAF-T-Liner C2 and Thomas Built Buses SAF-T-Liner HDX for the 2023 model year. Owners were notified on September 27, 2022, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 22V553000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 22V553000 (also written 22V-553 or 22V553)
- Filed by
- Daimler Trucks North America, LLC
- Manufacturer campaign number
- FL-949
- Report received
- Potentially affected
- 71 vehicles (per NHTSA)
- Component
- Engine and Engine Cooling — Engine — Engine Control Module (ECU/ECM)
- Owners notified
Repair completion: 78.87% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 22V553000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Thomas Built Buses
All Thomas Built Buses recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 22V553000.
Defect description
Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Thomas Built Saf-T-Liner HDX and Saf-T-Liner C2 school buses. The engine control module (ECM) may experience an internal short-circuit, which can result in an unexpected engine shut down.
Safety consequence
Unexpected engine shut down can increase the risk of a crash. Additionally, a disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.
Manufacturer remedy
Cummins will replace the ECM, free of charge. Owner notification letters are expected to be mailed September 26, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-949.
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.
Sources
Official NHTSA notice for recall 22V553000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.