Arboc Spirit Of Equess, model years 2018 to 2021. Filed by ARBOC Specialty Vehicles, LLC and reported to NHTSA on 18 March 2021. 41 vehicles potentially affected.
What the notice says ARBOC Specialty Vehicles, LLC (ARBOC) is recalling certain 2018-2021 Spirit of Equess buses equipped with Cummins Westport Inc. B6.7N natural gas engines. The engine control module software may be calibrated incorrectly, causing the engine to not limit engine speed or torque as intended for certain safety-related …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
What owners ask about this recall
- Which vehicles does recall 21V187 cover?
- Arboc Spirit Of Equess, model years 2018-2021.
- What is wrong with them?
- ARBOC Specialty Vehicles, LLC (ARBOC) is recalling certain 2018-2021 Spirit of Equess buses equipped with Cummins Westport Inc. B6.7N natural gas engines.
- What can happen if it is not put right?
- If safety-related functions such as vehicle braking, stability, speed, and collision avoidance do not function properly, it can increase the risk of a crash.
- Is there a fix yet?
- Yes, and it is free. ARBOC will work with the engine manufacturer, Cummins, Inc., to notify owners, and Cummins dealers will recalibrate the engine control module, free of charge. The recall began April 5, 2021. Owners may contact ARBOC customer service at 1-866-953-5555.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “If safety-related functions such as vehicle braking, stability, speed, and collision avoidance do not function properly, it can increase the risk of a crash.”
affected
in the notice
caught
| Campaign | 21V187 |
|---|---|
| Filed by | ARBOC Specialty Vehicles, LLC |
| System at fault | Engine |
| Reported to NHTSA | 18 March 2021 |
| Model years | 2018-2021 |
| Vehicles named | ARBOC SPIRIT OF EQUESS |
What the notice says today
The consequence
If safety-related functions such as vehicle braking, stability, speed, and collision avoidance do not function properly, it can increase the risk of a crash.
The remedy
ARBOC will work with the engine manufacturer, Cummins, Inc., to notify owners, and Cummins dealers will recalibrate the engine control module, free of charge. The recall began April 5, 2021. Owners may contact ARBOC customer service at 1-866-953-5555.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 116 notices in the record whose component field names engine. Across that group the median wait before owners were written to was 50 days.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Arboc notices we hold
- 26V479: 2017-2026 Spirit of Independence transit buses
- 26V349: 2025 Spirit of Equess, 2026 Spirit of Freedom, Spirit of Independence, and Spirit of Mobility transit buses
- 26V137: 2018-2026 Spirit of Freedom and Spirit of Mobility transit buses
- 25V842: 2025 Spirit of Freedom transit buses
- 25V841: 2025 Spirit of Mobility and Spirit of Freedom transit buses
- 24V500: 2023-2024 Spirit of Freedom
- 21V174: 2021 Spirit of Freedom Ford E450
- 20V335: 2016-2020 Spirit of America and 2014-2019 Spirit of Liberty buses built on a Freightliner Custom Chassis Corporation (FCCC) chassis
All 14 Arboc campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 21V187 on 23 August 2026, they were:
- Defect summary
febf3a61 - Consequence
2ca512be - Remedy
bf5444c8
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 21V187 · how the whole register is watched
Put this notice on your site
A small badge that links here and names the register's reference. It costs one line of HTML and needs no key.
The badge is free to use. It links to this page and nowhere else, and it never shows advertising.
Owners of these cars
No register publishes what happens after the letter. Owners do: tell us, in two taps.
Anonymous: no account, no cookie, nothing you type is stored beyond these choices. Figures appear once 3 owners have answered, and are published with the record under CC BY 4.0.