Recall 21V084 affects 2 2022 Blue Bird All American Transit Bus vehicles for incorrect brake ECU programming. Free repair at any franchised Blue Bird dealer.
Blue Bird is recalling 2 2022 All American Transit Bus vehicles because incorrect hydraulic brake control unit programming can keep electronic stability control from working properly. If ESC does not function as designed, crash or injury risk increases; Blue Bird dealers will complete the repair free of charge.
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What's wrong?
The hydraulic brake modulator on the 2022 Blue Bird All American Transit Bus is part of the brake system that works with Electronic Stability Control, or ESC. The modulator helps control hydraulic brake pressure when the ESC system detects that the bus needs stability assistance. The ESC system depends on the brake control unit using the correct vehicle settings.
On affected buses, the hydraulic brake control unit was not programmed with the right vehicle-specific parameters during assembly. That programming error means the ESC system does not operate as designed for that bus. In an accident, the stability system is less able to provide the intended control support, which raises the injury risk for occupants.
There is no audible warning before this programming problem shows up. The sign an owner or driver notices is the ESC light coming on randomly, including while driving straight on dry pavement.
Who's affected?
| 2022 Blue Bird All American Transit Bus | Electronic stability control (esc) |
|---|---|
| Units affected | 2 |
| Field incidents | NHTSA has logged no field incidents to date. |
Not every 2022 Blue Bird All American Transit Bus is on the list. Check your VIN to confirm whether your specific bus is included.
What's the safety risk?
Improper electronic stability control operation reduces the system's ability to help keep the bus stable, increasing the risk of a crash or injury. There is no audible warning, and the ESC light can come on randomly. Schedule the inspection soon and watch for that light. Repair is free at any franchised Blue Bird dealer.
What should I do?
- Check your VIN to confirm your 2022 Blue Bird All American Transit Bus is included in this recall.
- Contact a franchised Blue Bird dealer to schedule the free hydraulic-brake ECU inspection and repair that fixes the electronic stability control malfunction.
- Bring the recall notice if Blue Bird mailed one. If not, reference recall number 21V084 when you call.
- Drive with extra care until the repair is complete, since a malfunctioning electronic stability control system can increase crash or injury risk.
What happens at the repair
At the dealer, a Blue Bird technician inspects the hydraulic brake ECU on the affected 2022 All American Transit Bus and repairs the control unit as needed. The inspection and repair are free under the recall, with parts and labor covered. Blue Bird has a general reimbursement plan on file for eligible out-of-pocket repairs already paid. Ask Blue Bird customer service how to submit prior repair documentation.
| Reimbursement | Reimbursement available |
|---|
Timeline
| February 17, 2021 | NHTSA published the recall |
|---|---|
| April 9, 2021 | Owner notification mailed |
| April 14, 2021 | Dealer notification began |
| April 14, 2021 | Dealer notification ended |
| April 14, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V084?
Recall 21V084 covers 2 2022 Blue Bird All American Transit Bus vehicles with hydraulic brakes and electronic stability control. The hydraulic brake ECU was programmed incorrectly, which can cause the ESC system to malfunction and increase the risk of a crash or injury.
What should I do if my 2022 Blue Bird All American Transit Bus is on this recall?
Check your VIN to confirm your specific bus is included in recall 21V084. If it is, contact a franchised Blue Bird dealer to schedule the hydraulic brake ECU inspection and repair. Reference recall number 21V084 or Blue Bird recall R21BC-NSB when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Blue Bird dealers will inspect the hydraulic brake ECU and repair it as necessary free of charge.
What is the safety risk in recall 21V084?
The safety risk is loss of proper electronic stability control function. If the ESC system does not work correctly, the bus has a higher risk of crash or injury, especially in situations where stability control is needed to help the driver maintain control.
When did Blue Bird begin this recall?
Blue Bird began this recall on April 9, 2021. Owners can contact Blue Bird customer service at 1-478-822-2242 and use Blue Bird recall number R21BC-NSB when asking about the hydraulic brake ECU inspection and repair.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V084000 |
|---|---|
| Blue Bird customer service | 1-478-822-2242 |
| NHTSA recall # | 21V084 |
| NHTSA recall # (full) | 21V084000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 24, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →