Recall 22V631 covers 1,601 2023 Peterbilt and Kenworth trucks for an ECM short that stalls the engine. Free repair at a franchised Peterbilt dealer.
Peterbilt is recalling 1,601 2023 trucks, including the 520, 579, T680, and W900, because the engine control module can short circuit and stall the engine. An unexpected stall raises crash risk, and the dealer repair is free.
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What's wrong?
The engine control module on the affected 2023 trucks is the computer that manages engine operation. It reads sensor signals and sends commands for fuel, timing, and other engine functions so the diesel engine keeps running as intended. The module sits in the engine control system, so a fault inside it affects more than a dashboard light.
The problem starts inside the module during production. A screw in a supplier solder fixture moved out of position and pushed an electrolytic capacitor frame into the printed circuit board, the flat board that carries the module's electrical paths. That contact creates an internal electrical short-circuit. When the short occurs, the engine control module stops working correctly and the engine stalls.
There is no warning sign before failure. The first thing an owner or driver notices is the stall itself, with the engine losing power because the control module has failed.
Who's affected?
Peterbilt and Kenworth trucks in this scope use the same engine control module part number, CM2450A (5572391).
| 2023 Peterbilt 520 | Engine control module (ecu/ecm) |
|---|---|
| 2023 Peterbilt 579 | Engine control module (ecu/ecm) |
| 2023 Kenworth T680 | Engine control module (ecu/ecm) |
| 2023 Kenworth T800B | Engine control module (ecu/ecm) |
| 2023 Kenworth W900 | Engine control module (ecu/ecm) |
| 2023 Kenworth T280 | Engine control module (ecu/ecm) |
| 2023 Kenworth T380 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 536 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 537 | Engine control module (ecu/ecm) |
| 2023 Kenworth T440 | Engine control module (ecu/ecm) |
| 2023 Kenworth T480 | Engine control module (ecu/ecm) |
| 2023 Kenworth T880 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 567 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 389 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 367 | Engine control module (ecu/ecm) |
| 2023 Kenworth W990 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 548 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 348 | Engine control module (ecu/ecm) |
| 2023 Kenworth K270 | Engine control module (ecu/ecm) |
| 2023 Kenworth K370 | Engine control module (ecu/ecm) |
| 2023 Peterbilt 220 | Engine control module (ecu/ecm) |
| Units affected | 1,601 |
| 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 truck.
What's the safety risk?
An unexpected engine stall can leave the driver without normal engine power and increase the risk of a crash. There is no warning sign before failure, so treat any stall as a reason to stop in a safe place and arrange dealer service. Repair is free at any franchised Peterbilt dealer.
What should I do?
- Check your VIN to confirm your listed 2023 Peterbilt or Kenworth model is included in this recall.
- Contact a franchised Peterbilt dealer to schedule the free ECM replacement for the internal short circuit that can stall the engine.
- Bring the recall notice if you have it. If not, reference recall number 22V631 when you call.
- Drive cautiously until the repair is complete. Move out of traffic and stop in a safe place if the engine stalls.
What happens at the repair
At the dealer, a Peterbilt technician replaces the engine control module. The replacement parts and labor are free under recall 22V631. If you've already paid out of pocket for an ECM repair tied to this recall before the owner notice, Peterbilt's standard reimbursement plan covers documented expenses. Bring receipts or repair paperwork to the service desk and ask how to submit them through the recall reimbursement process.
| Reimbursement | Reimbursement available |
|---|
Timeline
| August 17, 2022 | NHTSA published the recall |
|---|---|
| September 26, 2022 | Owner notification mailed |
| October 16, 2022 | Dealer notification began |
| October 16, 2022 | Dealer notification ended |
| October 16, 2022 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| October 16, 2022 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 22V631?
Recall 22V631 covers 1,601 2023 Peterbilt and Kenworth trucks with an engine control module electrical short that can cause the engine to stall. An unexpected stall increases crash risk. Dealers will replace the ECM for free.
What should I do if my 2023 Peterbilt or Kenworth truck is on this recall?
Check your VIN to confirm your specific truck is included in recall 22V631. If it is, contact a franchised Peterbilt dealer to schedule the ECM replacement. Reference recall number 22V631 and PACCAR recall number 22PBG when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and PACCAR says dealers will replace the engine control module free of charge. Parts and labor are covered at the franchised dealer.
What is the safety risk?
The safety risk is an unexpected engine stall. The recall says the engine control module can experience an internal electrical short, which can stop the engine while the truck is in use and increase crash risk. The fix is an ECM replacement at the dealer.
What if I bought this truck used?
The free repair still applies. Recall repairs follow the vehicle, not the first owner. Check your VIN to confirm whether your exact 2023 Peterbilt or Kenworth truck is included, then give the dealer recall number 22V631 when you schedule service.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/22V631000 |
|---|---|
| Peterbilt customer service | 1-425-828-5888 |
| NHTSA recall # | 22V631 |
| NHTSA recall # (full) | 22V631000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Owner Notice (PDF)
- Download Owner Notification Letter (PDF)
- Download Recall Document (PDF) (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 →