Recall 23V291 affects 7 2022-2023 Nova Bus Lfs transit buses for an unlocked battery coolant line. Repair is free at a franchised Nova Bus dealer.
Nova Bus is recalling 7 2022-2023 Lfs battery electric transit buses because the high voltage battery pack coolant line can be improperly seated and locked. That condition can cause coolant loss and an electrical short circuit, which increases fire risk; Nova Bus dealers will complete the repair free of charge.
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What's wrong?
The high voltage battery pack on a 2022-2023 Nova Bus Lfs stores the energy that powers the electric drive system. Coolant lines run through the pack to carry heat away from the battery cells, so the pack stays within its operating temperature range during route service.
On affected buses, a coolant line inside the Akasol Gen3 battery pack was not fully seated and locked during supplier assembly. That loose connection can let coolant escape from the pack. If coolant reaches electrical components, it can create an electrical short circuit in the high voltage battery system.
The driver warning sign is a low coolant light, a thermal runaway detection tell-tale, or both while the bus is in operation. If either warning appears, treat it as a sign that the battery cooling system needs inspection before the bus returns to service.
Who's affected?
Covers the 2022 and 2023 Lfs model years, both tied to the same high-voltage traction battery coolant component.
| 2023 Nova Bus Lfs | high-voltage traction battery |
|---|---|
| 2022 Nova Bus Lfs | high-voltage traction battery |
| Units affected | 7 |
| Field incidents | NHTSA has logged no field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
The risk is a battery short circuit that increases fire risk. While the bus is in operation, a low coolant warning or thermal runaway detection tell-tale can illuminate. Treat that warning as a reason to pull over safely and contact service. 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 or Nova Bus customer service to schedule the free battery-pack inspection and any needed replacement that addresses the loose coolant line in the high-voltage battery pack.
- Reference recall number 23V291 and Nova Bus recall CR5406 when you call.
- Bring the owner letter if you have it, and ask whether the bus should stay out of service until the battery packs are inspected.
What happens at the repair
At the dealer, a Nova Bus technician works with Akasol, the battery pack manufacturer, to inspect the high voltage battery packs. If a pack needs replacement, the technician replaces it under the recall. Parts and labor are covered, and the recall repair is available now. If you already paid for battery pack work before the recall notice, Nova Bus's standard reimbursement plan covers documented expenses. Bring repair orders, invoices, and proof of payment when you ask the service desk how to file the claim.
| Reimbursement | Reimbursement available |
|---|
Timeline
| April 24, 2023 | NHTSA published the recall |
|---|---|
| May 23, 2023 | Owner notification mailed |
| June 16, 2023 | Dealer notification began |
| June 16, 2023 | Dealer notification ended |
| June 16, 2023 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 23V291?
Recall 23V291 covers 7 2022-2023 Nova Bus Lfs battery electric transit buses. The coolant line in the high voltage battery pack was not fully seated and locked, which can cause coolant loss and an electrical short circuit. Nova Bus will inspect the battery packs and replace them for free when needed.
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 23V291. If it is, contact Nova Bus customer service at 1-800-350-6682 or your Nova Bus service contact to arrange the battery pack inspection. Reference Nova Bus recall number CR5406 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost. Nova Bus will work with Akasol to inspect the battery packs and replace affected packs as needed, free of charge.
What is the safety risk in recall 23V291?
The safety risk is fire from a battery short circuit. The recall involves a coolant line in the high voltage battery pack that was not fully seated and locked. Coolant loss can lead to an electrical short circuit, which increases fire risk.
When were Nova Bus owners notified about recall 23V291?
Nova Bus mailed owner notification letters on May 23, 2023. If you operate or maintain a 2022-2023 Nova Bus Lfs and did not receive a letter, check your VIN and contact Nova Bus customer service at 1-800-350-6682 with recall number CR5406.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/23V291000 |
|---|---|
| Nova Bus customer service | 1-800-350-6682 |
| NHTSA recall # | 23V291 |
| NHTSA recall # (full) | 23V291000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Report (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →