Recall 24V727 covers 40 2022-2023 Nova Bus Lfs buses for VCU software crashes that cut drive power. Free repair at any franchised Nova Bus dealer.
Nova Bus is recalling 40 2022-2023 Lfs buses under recall 24V727 because a software error can make the Vehicle Control Unit crash, disconnect the high-voltage batteries, and cut drive power. Loss of drive power increases crash risk, and Nova Bus dealers will complete the repair free of charge.
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What's wrong?
The vehicle control unit on the 2022-2023 Nova Bus Lfs is the main electronic controller for the electric drive system. It reads inputs from the bus and manages commands between the propulsion system, traction motor controller, and high voltage battery system. When that controller stays online, the batteries remain connected and the bus has drive power.
On affected Lfs buses, the controller software is the wrong revision. That software error can make the vehicle control unit crash. When the controller crashes, it disconnects the high voltage batteries from the propulsion system, and the bus loses drive power instead of continuing under its own power. Remedied buses receive software revision F or higher.
There is no warning sign before failure. The loss of drive power happens without a prior alert, so operators are not given a specific symptom to watch for before the controller crash occurs.
Who's affected?
Spans the 2022 and 2023 Lfs model years, with the electric propulsion controller and electrical system software tied to the same vehicle control unit program.
| 2023 Nova Bus Lfs | electric propulsion system |
|---|---|
| 2023 Nova Bus Lfs | electrical system software |
| 2022 Nova Bus Lfs | electric propulsion system |
| 2022 Nova Bus Lfs | electrical system software |
| Units affected | 40 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
Loss of drive power can leave the bus without propulsion and increase the risk of a crash. There is no warning sign before it happens, so schedule the software update promptly and use normal caution until it is complete. Repair is free at any franchised Nova Bus dealer.
What should I do?
- Check your VIN to confirm your 2022-2023 Nova Bus Lfs is included in this recall.
- Contact a franchised Nova Bus dealer to schedule the free VCU software update that fixes the software crash and loss of drive power.
- Bring the recall notice if Nova Bus mailed one. If not, reference recall number 24V727 when you call.
- Limit bus service until the repair is complete; loss of drive power increases crash risk.
- Call Nova Bus customer service at 1-800-350-6682 with questions about scheduling or repair status.
What happens at the repair
At the dealer, a Nova Bus technician validates the Vehicle Control Unit software and updates it so the VCU does not crash and disconnect the high voltage batteries. The software repair is free under the recall, and parts and labor are covered. If you already paid for a related VCU software repair before the recall notice, Nova Bus handles documented pre-notice expenses through its standard reimbursement plan. Keep invoices, repair orders, and proof of payment with your service paperwork.
| Reimbursement | Reimbursement available |
|---|
Timeline
| September 30, 2024 | NHTSA published the recall |
|---|---|
| October 4, 2024 | Dealer notification began |
| October 4, 2024 | Dealer notification ended |
| November 2, 2024 | Owner notification mailed |
| November 29, 2024 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| November 29, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V727?
Recall 24V727 covers 40 2022-2023 Nova Bus Lfs buses with a Vehicle Control Unit software error. The VCU can crash, disconnect the high voltage batteries, and cause a loss of drive power, increasing crash risk. Nova Bus will validate and update the VCU software for free.
What should I do if my 2022-2023 Nova Bus Lfs is on this recall?
Check your VIN to confirm your specific bus is included in recall 24V727. If it is, contact Nova Bus or a franchised Nova Bus service location to schedule the VCU software validation and update. Reference recall 24V727 or Nova Bus recall CR5643 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Nova Bus will validate and update the VCU software free of charge. Parts, labor, and the software work tied to recall 24V727 are covered.
What is the safety risk?
The risk is loss of drive power. A VCU software error can disconnect the high voltage batteries, which can stop propulsion and increase crash risk. If your VIN is included, arrange the free Nova Bus software update and ask how to handle the bus until service is complete.
When were owners notified about this Nova Bus recall?
Nova Bus mailed owner notification letters on November 2, 2024. If you manage or bought one of these buses and did not receive a letter, check your VIN and reference recall 24V727 or Nova Bus recall CR5643 when contacting Nova Bus customer service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V727000 |
|---|---|
| Nova Bus customer service | 1-800-350-6682 |
| NHTSA recall # | 24V727 |
| NHTSA recall # (full) | 24V727000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Acknowledgement (PDF)
- Download Recall Report (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 19, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →