NHTSA campaign 20V457000 · Nova Bus campaign CR4943
Nova Bus Recall 20V-457: Loss of Drive from Fractured Pressure Switch
NHTSA recall 20V457000 (Nova Bus campaign CR4943) was reported by Nova Bus on August 5, 2020, with 34 vehicles potentially affected (per NHTSA). NHTSA's record lists the Nova Bus LFS and Nova Bus LFS Artic for the 2016 model year. Owners were notified on September 15, 2020, 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 20V457000 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
- 20V457000 (also written 20V-457 or 20V457)
- Filed by
- Nova Bus
- Nova Bus campaign number
- CR4943
- Report received
- Potentially affected
- 34 vehicles (per NHTSA)
- Component
- Power Train — Automatic Transmission
- Owners notified
Repair completion: 73.53% (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 20V457000. 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.
Nova Bus
All Nova Bus recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 20V457000.
Defect description
Nova Bus (Nova) is recalling certain 2016 LFS and LFS Artic buses equipped with specific Allison Transmission drive units. The pressure switches on these Drive Units may fail, possibly resulting in a loss of drive.
Safety consequence
A loss of drive can disable the vehicle unexpectedly, increasing the risk of a crash. Additionally, offloading passengers to transfer them to another bus can increase the risk of injury.
Manufacturer remedy
Nova will notify owners, and Allison Transmissions will replace the C1 and C2 pressure switches, free of charge. The recall began September 15, 2020. Owners may contact Nova customer service at 1-800-350-6682. Nova's number for this recall is CR4943.
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.safercar.gov.
Sources
Official NHTSA notice for recall 20V457000
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.