Recall 21V121 affects 35 2019-2020 Fccc Xba chassis for incorrect engine-control software. Repair is free at any franchised Fccc dealer.
Fccc is recalling 35 2019-2020 Xba chassis because incorrectly calibrated Cummins B6.7N engine control module software can prevent engine speed or torque limits from working as intended. When braking, stability, speed control, or collision avoidance functions do not work properly, crash risk increases; Fccc dealers will complete the recall repair free of charge.
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What's wrong?
The engine control module on 2019-2020 Fccc Xba chassis is the computer that tells the Cummins B6.7N engine how much speed and torque to allow. It also listens to electronic requests from other vehicle systems over the truck data network. When braking, traction control, stability control, speed control, or collision avoidance needs engine power reduced, the module is supposed to limit the engine response.
On affected Xba chassis, the engine software calibration is wrong. When a safety-related system sends a TSC1 request over the J1939 data link, the engine does not limit speed or torque the way it is supposed to. That means those systems do not get the expected engine-power reduction during the moment they ask for it.
There is no warning sign before failure. The problem is in software, so the owner is not given a dashboard clue or a change in normal driving feel before the engine ignores one of these safety-related requests.
Who's affected?
Scope spans the 2019 and 2020 model years, with both engine and engine-control software components named for Xba.
| 2019 Fccc Xba | Software |
|---|---|
| 2019 Fccc Xba | Engine |
| 2020 Fccc Xba | Software |
| 2020 Fccc Xba | Engine |
| Units affected | 35 |
| 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 this recall applies to your specific vehicle.
What's the safety risk?
When vehicle braking, stability, speed, or collision avoidance functions do not work properly, the driver has less control and crash risk increases. There is no listed warning sign, so schedule the recall repair soon and use extra caution until it is complete. Repair is free at any franchised Fccc dealer.
What should I do?
- Check your VIN to confirm your 2019-2020 Fccc Xba is included in this recall.
- Contact a franchised Fccc dealer to schedule the free engine control module recalibration that corrects engine speed and torque limits for braking, traction and stability control, speed control, and collision avoidance functions.
- Bring the recall notice if Fccc mailed one. If not, reference recall number 21V121 when you call.
- Call Fccc customer service at 1-800-547-0712 with questions before scheduling.
- Drive carefully until the recalibration is complete, and leave extra following distance.
What happens at the repair
At the dealer, an Fccc technician recalibrates the engine control module software at no charge. The update corrects the engine control settings so the module applies the intended engine speed and torque limits for safety related functions, including braking, traction and stability control, speed control, and collision avoidance. The recall repair is free, and the dealer handles the software update under campaign 21V121.
Timeline
| February 25, 2021 | NHTSA published the recall |
|---|---|
| March 29, 2021 | Owner notification mailed |
| April 25, 2021 | Dealer notification began |
| April 25, 2021 | Dealer notification ended |
| April 25, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V121?
Recall 21V121 covers 35 2019-2020 Fccc Xba chassis with Cummins B6.7N engines and incorrect engine control module software calibration. The issue affects engine speed or torque limits tied to braking, traction control, stability control, speed control, and collision avoidance. Cummins dealers will recalibrate the engine control module for free.
What should I do if my 2019-2020 Fccc Xba is on this recall?
Check your VIN to confirm your specific chassis is included in recall 21V121. If it is, contact a franchised Fccc dealer or Cummins dealer to schedule the engine control module recalibration. Reference recall number 21V121 or Fccc recall number FL-879 when you call.
Does the recall repair cost anything?
No. Federal recall law requires the recall remedy to be completed at no cost, and the manufacturer remedy for recall 21V121 is free. Cummins dealers will recalibrate the engine control module software without charging for parts or labor.
What is the safety risk?
The safety risk is that braking, stability, speed control, and collision avoidance functions can fail to operate as intended. If those safety-related functions do not work properly, crash risk increases. Confirm the VIN, then arrange the free engine control module recalibration.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V121000 |
|---|---|
| Fccc customer service | 1-800-547-0712 |
| NHTSA recall # | 21V121 |
| NHTSA recall # (full) | 21V121000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Misc. Document (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall 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 →