Recall 24V006 affects 408 2020-2024 E-One emergency vehicles with multiplex firmware that leaves circuits overloaded. Repair is free at any franchised E-One dealer.
E-One is recalling 408 2020-2024 Commercial, Typhoon N, and Cyclone N vehicles under recall 24V006 because vehicle multiplex-system firmware can leave an output pin on after a short circuit or wiring failure. The overloaded circuit can overheat and increase the risk of fire, and E-One dealers will complete the repair free of charge.
Does this recall apply to your specific vehicle?
The official, free per-VIN recall check is run by NHTSA. Enter your VIN and we'll forward you directly — and add you to a free watchlist so you hear about new recalls for your vehicle.
Check my VIN at NHTSARecallNotify doesn't check your VIN — NHTSA's official tool does. We use your email only to alert you to new recalls.
Watch this vehicle for recalls
Add it to your free watchlist and we will alert you as new federal recalls are posted for your year, make and model. New-recall alerts are rolling out now.
You are on the watchlist.
We will email you as new federal recalls are posted for your vehicle.
What's wrong?
The affected 2020-2024 E-One vehicles use a multiplex input output node in the electrical system. That node acts like a controlled switchboard: it takes commands from the vehicle's electronics and turns circuits on or off through output pins. In normal operation, it also senses electrical current so an overloaded circuit can be shut down.
On these vehicles, the firmware calibration for current sensing was outside specification. If an external load short-circuits or wiring fails, the node does not shut off the output pin as designed. That leaves the circuit powered when it should be protected, which can overload the wiring and electrical components connected to that output.
There is no warning sign before failure. The firmware version on the device determines whether the node is included in the recall, so the vehicle model alone does not confirm the defect.
Who's affected?
Covers seven E-One truck lines from the 2020-2024 model years, all tied to the same wiring component.
| 2022 E-One Typhoon N | wiring |
|---|---|
| 2022 E-One Commercial | wiring |
| 2023 E-One Commercial | wiring |
| 2021 E-One Commercial | wiring |
| 2020 E-One Commercial | wiring |
| 2023 E-One Cyclone E | wiring |
| 2023 E-One Cyclone N | wiring |
| 2023 E-One Typhoon N | wiring |
| 2024 E-One Commercial | wiring |
| 2023 E-One Arff | wiring |
| 2020 E-One Typhoon N | wiring |
| 2021 E-One Typhoon N | wiring |
| 2022 E-One Typhoon | wiring |
| 2021 E-One Cyclone N | wiring |
| 2022 E-One Cyclone N | wiring |
| 2020 E-One Cyclone Ii | wiring |
| 2022 E-One Cyclone Ii | wiring |
| 2023 E-One Cyclone Ii | wiring |
| 2022 E-One Arff | wiring |
| 2021 E-One Arff | wiring |
| Units affected | 408 |
| 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 truck is included.
What's the safety risk?
NHTSA campaign 24V006 states that overloaded electrical circuits can overheat and increase the risk of fire. There is no warning sign before failure, so schedule the firmware update soon and stop using affected equipment if overheating is suspected. Repair is free at any franchised E-One dealer.
What should I do?
- Check your VIN to confirm your 2020-2024 E-One Typhoon N, Commercial, Cyclone E, Cyclone N, Arff, Typhoon, or Cyclone Ii vehicle is included in this recall.
- Contact a franchised E-One dealer to schedule the free Weldon multiplex-system firmware update that prevents overloaded electrical circuits from overheating.
- Bring the recall notice if you received one, and reference recall number 24V006 when you call.
- Avoid using the vehicle if it shows signs of electrical overheating until the firmware update is complete.
- Call E-One customer service at 1-352-237-1122 with questions about the software update.
What happens at the repair
At the dealer, an E-One technician updates the vehicle multiplex system firmware supplied by Weldon so the system can shut off the output pin after a short circuit or wiring failure. The software update is free under the recall, and parts and labor are covered. If you already paid for related multiplex system firmware work before the recall notice, ask E-One customer service how to submit documentation under the manufacturer's standard reimbursement plan.
| Reimbursement | Reimbursement available |
|---|
Timeline
| January 8, 2024 | NHTSA published the recall |
|---|---|
| January 12, 2024 | Dealer notification began |
| January 24, 2024 | Owner notification mailed |
| January 24, 2024 | Dealer notification ended |
| January 24, 2024 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 24V006?
Recall 24V006 covers 408 2020-2024 E-One vehicles with vehicle multiplex firmware that can leave an output pin on after a short circuit or wiring failure. That can overload electrical circuits and increase fire risk. Weldon will update the firmware for free.
What should I do if my 2020-2024 E-One Typhoon N, Commercial, Cyclone E, Cyclone N, Arff, Typhoon, or Cyclone Ii is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 24V006. If it is, contact an E-One dealer or E-One customer service at 1-352-237-1122 to arrange the Weldon firmware update. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the recall remedy at no cost, and the recall remedy states that Weldon will update the firmware free of charge. Use recall number 24V006 when you call an E-One dealer or E-One customer service.
What is the safety risk in recall 24V006?
The safety risk is fire from overheated electrical circuits. In recall 24V006, the vehicle multiplex system firmware can fail to shut off an output pin after a short circuit or wiring failure, leaving the circuit overloaded until the firmware is updated.
When were owners notified about recall 24V006?
E-One mailed owner notification letters on January 24, 2024. If you own one of the listed 2020-2024 E-One vehicles and did not receive a letter, check your VIN and call E-One customer service with recall number 24V006.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/24V006000 |
|---|---|
| E-One customer service | 1-352-237-1122 |
| NHTSA recall # | 24V006 |
| NHTSA recall # (full) | 24V006000 |
Source documents
-
Download Quarterly Report (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 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →