2021 Kenworth T440 recalls and problems
The 2021 Kenworth T440 has 4 safety recalls and 1 owner complaint filed with NHTSA. Recall repairs are free at any Kenworth dealer.
Recalls may cover only some 2021 Kenworth T440 vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.
2021 Kenworth T440 recalls
Recall 24V-915: Electrical System, Service Brakes, Hydraulic
Problem: PACCAR Incorporated (PACCAR) is recalling certain 2021-2025 Peterbilt and Kenworth vehicles, equipped with Bendix EC80 Advanced Electronic Control Units (ECU). Please see the recall report for a complete list of models. Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning.
Risk: Safety systems that depend on the ECU (Automatic Traction Control, ABS, Electronic Stability Control, Active Cruise Control, and Collison Mitigation System) may not function properly or at all, increasing the risk of a crash.
Fix: Dealers will reprogram the ECU software, free of charge. Owner notification letters were mailed February 3, 2025. Owners may contact Kenworth's customer service at 1-425-828-5888 and Peterbilt's customer service at 1-940-591-4220. PACCAR's numbers for this recall are 24KWL and 24PBL.
Recall 24V-145: Service Brakes, Air
Problem: PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Risk: Insufficient air volume can reduce braking performance and increase the risk of a crash.
Fix: Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 24KWD.
Recall 21V-601: Fuel System, Diesel
Problem: PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Peterbilt 536, 537, 548 and Kenworth T270, T280, T370, T380, T440, T470, and T480 vehicles equipped with Cummins L9 diesel engines. A fuel leak may occur from the fuel hose between the fuel pump and the remote fuel filter head.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Fix: Cummins will replace the fuel hoses, free of charge. Owner notification letters are expected to be mailed in October 2021. Owners may contact PACCAR's customer service at 1-425-828-5888 (Kenworth) and 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21PBG and 21KWF.
Recall 21V-391: Fuel System, Diesel
Problem: PACCAR Incorporated (PACCAR) is recalling certain 2018-2021 Peterbilt 337, 348, 365, 367, 520, 567, Kenworth T270, T370, T440, T470, T800 and T880 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.
Fix: Dealers will inspect the rail threads and fuel lines, and replace the rail as necessary, free of charge. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWC and 21PBD.
2021 Kenworth T440 problems reported by owners
| Problem area | Reports | |
|---|---|---|
| Service Brakes | 1 |
Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.
Recent 2021 Kenworth T440 complaints
Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.
Other Kenworth T440 years
Frequently asked questions
Does the 2021 Kenworth T440 have any recalls?
Yes — NHTSA lists 4 recalls for the 2021 Kenworth T440: 24V-915 (electrical system, service brakes, hydraulic), 24V-145 (service brakes, air), 21V-601 (fuel system, diesel), 21V-391 (fuel system, diesel). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.
What is the most common problem with the 2021 Kenworth T440?
Owners report service brakes problems most often (1 reports).
Are Kenworth recall repairs free?
Yes. Safety recall repairs are free at authorized Kenworth dealers, whether you are the first owner or bought the car used.