Engine control module calibrated incorrectly
Defect Summary
Paccar incorporated (paccar) is recalling one 2021 peterbilt 536 vehicle equipped with a cummins westport inc. B6.7n engine that has certain engine control module calibrations. 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 functions such as vehicle braking, traction and stability control, speed control, or collision avoidance.
Safety 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.
Corrective Action
Paccar owns the vehicle affected, and it was repaired as of march 3, 2021. owners may contact paccar customer service at 1-940-591-4220. paccar's number for this recall is 21pbc.
Similar Recalls
Other recalls from Paccar Incorporated or involving N/A.
FAQ: Recall 21V181000
Your rights, the repair process, and what each field on this page means.
What is recall 21V181000?
NHTSA recall 21V181000 was issued by Paccar Incorporated on March 16, 2021. It addresses: Engine control module calibrated incorrectly. The recall affects approximately 1 vehicles, with the defect involving the N/A component.
How do I get this recall repaired?
Contact any authorized Paccar Incorporated dealer and reference NHTSA recall ID 21V181000 or the manufacturer campaign number 21PBC. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.