PETERBILT 2021 PETERBILT 536 Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2021 PETERBILT 536
Brand
PETERBILT
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2021
PACCAR Incorporated is recalling certain 2021 PETERBILT 536 vehicles due to engine and engine cooling:engine:engine control module (ecu/ecm):software issues. If safety-related functions such as vehicle braking, stability, speed, and collision avoidance do not function properly, it can increase the risk of a.
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
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.
Reported concern (NHTSA)
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.
Recommended Action
Per NHTSA guidance
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.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026