NHTSA vehicle safety data
2021 Kenworth T440 Recalls & Complaints
The 2021 Kenworth T440 has 4 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Kenworth dealer.
NHTSA recall and complaint data for the 2021 Kenworth T440. Recall data is refreshed daily from NHTSA.
2021 Kenworth T440 owner complaints
Owners have filed 1 complaint with NHTSA about the 2021 Kenworth T440, describing incidents dated March 10, 2022.
Most-cited components
- Service Brakes 1 complaint
Newest complaints
ODI #11456828 · Filed
While driving the factory floor mat can slide under the rear of the brake pedal while it is being applied. Once pedal is released it will still hold brake pressure causing brakes to remain engaged while still allowing vehicle to move down the road in turn causing brakes to heat up and either lockup/…
Loss of ABS and Electronic Stability Control
NHTSA #24V915000 · Service Brakes, Hydraulic — Antilock/Traction Control/Electronic Limited Slip — Control Unit/Module · NHTSA notice
Reported December 9, 2024 · PACCAR Incorporated
Potentially affected: 220,764 vehicles
Repair completion: 76.11% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 24KWL 24PBL · Owners notified February 3, 2025
Defect description
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.
Safety consequence
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.
Manufacturer remedy
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to nhtsa.gov.
Insufficient Air Volume in Brake System /FMVSS 121
NHTSA #24V145000 · Service Brakes, Air — Supply — Reservoir/Tank · NHTSA notice
Reported February 23, 2024 · PACCAR Incorporated
Potentially affected: 936 vehicles
Repair completion: 24.04% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 24KWD · Owners notified August 12, 2024 · Vehicles built through July 14, 2020 (per NHTSA)
Defect description
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."
Safety consequence
Insufficient air volume can reduce braking performance and increase the risk of a crash.
Manufacturer remedy
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Fuel Hose Leak
NHTSA #21V601000 · Fuel System, Diesel — Delivery — Hoses, Lines/Piping, and Fittings · NHTSA notice
Reported August 3, 2021 · PACCAR Incorporated
Potentially affected: 688 vehicles
Repair completion: 38.66% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 21PBG and 21KWF · Owners notified July 30, 2021
Defect description
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.
Safety consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Manufacturer remedy
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
High Pressure Fuel Rail Assembly May Leak Fuel
NHTSA #21V391000 · Fuel System, Diesel — Fuel Injection System — Fuel Rail · NHTSA notice
Reported May 26, 2021 · PACCAR Incorporated
Potentially affected: 612 vehicles
Repair completion: 49.67% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 21KWC, 21PBD · Owners notified July 30, 2021
Defect description
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.
Safety consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Manufacturer remedy
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.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Other Kenworth T440 model years
Check your 2021 Kenworth T440 VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Kenworth T440 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
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