Recall 24V873 affects 758 2022-2024 Nova Bus Lfs and Lfs Artic buses for false coolant-sensor signals. Repair is free at any franchised Nova Bus dealer.
Nova Bus is recalling 758 2022-2024 Lfs and Lfs Artic buses because a coolant sensor can send a false signal and shut down the engine. An unexpected shutdown can increase crash risk and raise injury risk during passenger transfers; Nova Bus dealers will complete the recall repair free of charge.
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What's wrong?
The critical coolant level sensor on 2022-2024 Nova Bus Lfs and Lfs Artic buses watches the coolant level in the engine cooling system. Coolant carries heat away from the engine, and the sensor tells the bus electronics when the level is too low. That signal helps protect the engine from running without enough coolant.
The defect is inside the Casco AC Fluid Level Sensor. Its internal probes can be misaligned, so the sensor reads the coolant level incorrectly. That false low-coolant signal can tell the control system to shut the engine down even when the shutdown is not needed. The replacement sensor adds internal support to keep the probes positioned correctly.
There is no warning sign before failure. The bus can shut down without a prior warning light, noise, smell, or change in engine feel tied to this sensor. If the engine shuts down, the driver loses propulsion and needs the free recall repair through Nova Bus service.
Who's affected?
Spans 2022-2024 Lfs and Lfs Artic buses using the same cooling system component.
| 2023 Nova Bus Lfs | Cooling system |
|---|---|
| 2022 Nova Bus Lfs | Cooling system |
| 2023 Nova Bus Lfs Artic | Cooling system |
| 2024 Nova Bus Lfs | Cooling system |
| Units affected | 758 |
| Field incidents | NHTSA has logged 185 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?
An unexpected engine shutdown increases crash risk, and moving passengers from a disabled bus increases injury risk. There is no warning sign before shutdown, so schedule the inspection soon and keep operators ready to secure the bus if it loses power. Repair is free at any franchised Nova Bus dealer.
What should I do?
- Check your VIN to confirm your 2022-2024 Nova Bus Lfs or Lfs Artic bus is included in this recall.
- Contact a franchised Nova Bus dealer to schedule the free coolant-sensor inspection and replacement that fixes the false signal that can shut down the engine.
- Bring the recall notice if Nova Bus mailed one. If not, reference recall number 24V873 when you call.
- Drive cautiously until the repair is complete, and move the bus out of service if the engine shuts down unexpectedly.
- Keep passengers clear of traffic during any roadside transfer if the bus becomes disabled.
What happens at the repair
At the dealer, a Nova Bus technician inspects the coolant sensor and replaces it if the inspection shows it is needed. The inspection, replacement sensor, and labor are free under the recall. If an owner already paid for a coolant sensor repair before the recall notice, Nova Bus's general reimbursement plan addresses documented repairs. Bring repair invoices and proof of payment to the service desk, or contact Nova Bus customer service for claim instructions.
| Reimbursement | Reimbursement available |
|---|
Timeline
| November 19, 2024 | NHTSA published the recall |
|---|---|
| November 22, 2024 | Dealer notification began |
| November 22, 2024 | Dealer notification ended |
| February 20, 2025 | Owner notification mailed |
| March 28, 2025 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| March 28, 2025 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V873?
Recall 24V873 covers 758 2022-2024 Nova Bus Lfs and Lfs Artic buses with a coolant sensor that can send a false signal and shut the engine down. Nova Bus will inspect and replace the coolant sensor for free.
What should I do if my 2022-2024 Nova Bus Lfs or Lfs Artic is on this recall?
Check your VIN to confirm your specific bus is included in recall 24V873. If it is, contact a franchised Nova Bus dealer or authorized service location to schedule the coolant sensor inspection and replacement. Reference recall number CR5668 when you call.
Does the recall repair cost anything?
No. Federal recall law requires the manufacturer to repair the defect at no cost. Nova Bus will inspect the coolant sensor and replace it as needed free of charge through a franchised Nova Bus dealer or authorized service location.
What is the safety risk?
The coolant sensor can send a false signal that shuts the engine down without warning. An unexpected engine shutdown increases crash risk, and moving passengers from a disabled bus also increases injury risk. The repair path is the free coolant sensor inspection and replacement.
When were owners notified about recall 24V873?
Nova Bus mailed owner notification letters on February 20, 2025. If you manage or own one of these buses and did not receive a letter, check your VIN and contact Nova Bus customer service at 1-800-350-6682 with recall number CR5668.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V873000 |
|---|---|
| Nova Bus customer service | 1-800-350-6682 |
| NHTSA recall # | 24V873 |
| NHTSA recall # (full) | 24V873000 |
Source documents
-
Download Quarterly Report (PDF) - Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Acknowledgement (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 →