Complaints over time
Complaints about the 2021 Kenworth T440 peaked in 2022, with 1 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model year
2021 Kenworth T440
Truck, diesel, 6x4, built in Mexico. Owner complaints on file from Mar 15, 2022 to Mar 15, 2022.
Recall campaigns covering this model year4223k vehicles or units across those campaigns
Owner complaints1Close to the median 2021 truck
Severity index0.02021 trucks average 15.0
First 24 months1Complaints in its first two years
Components
100% of complaints about the 2021 Kenworth T440 name brakes
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
4 recall campaigns cover the 2021 Kenworth T440
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 24V-915 | Dec 9, 2024 | Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning | Electrical system | 220,764 | Software update |
| 24V-145 | Feb 23, 2024 | Air tanks have an insufficient volume of air for the brake system | Brakes | 936 | Repair or modification |
| 21V-601 | Aug 3, 2021 | Fuel leak may occur from the fuel hose between the fuel pump and the remote fuel filter head | Fuel system | 688 | Part replacement |
| 21V-391 | May 26, 2021 | Sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak | Fuel system | 612 | Part replacement |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2021 Kenworth T440
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Mar 15, 2022Failure Mar 10, 2022Hanford, CAService brakes
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/ catch fire or once cooled become inoperable. We have heat marks on exterior of front drums and pads were glazed over.
NHTSA complaint 11456828
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
11 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.
- P001 Sep 11, 2026 · Service Bulletin/Repair Instructions
"Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list." - 24KWD Oct 28, 2025 · Service Bulletin/Repair Instructions
SAFETY RECALL Additional chassis have been included. The chassis list has been updated. Certain T370 / T440 / T470 / T480 / T660 / T680 / T800 / T880 / W900 / C500 chassis may be equipped with air tank reservoirs that have less than twelve times the combine… - 45-064 Oct 18, 2022 · Service Bulletin/Repair Instructions
Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to del… - 22KWB May 10, 2022 · Service Bulletin/Repair Instructions
Safety Recall â“ Interim Notification - The Dana D-Series front axle steer arm fasteners that attach the steer arm to the steering knuckle may fail, increasing the risk of a crash or injury. Repair information will be added when a repair procedure and parts… - 51-013 Feb 4, 2022 · Service Bulletin/Repair Instructions
Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a prim… - E282 Dec 17, 2021 · Service Bulletin/Repair Instructions
Information Only: Due to differences between the PACCAR MX-11 or MX-13 2021A and 2021B engines, technicians must be able to identify which of these engines are in a chassis. - S007 Nov 16, 2021 · Service Bulletin/Repair Instructions
Non-Safety Campaign - Convex mirrors are available. Parts will be shipped to dealers. - 43-071 Sep 21, 2021 · Service Bulletin/Repair Instructions
Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue op… - 02-168 Sep 20, 2021 · Service Bulletin/Repair Instructions
Information Only - Rear axle Quarter Fenders with less than two inches of clearance between the top of the quarter fender and the bottom of the trailer/equipment are susceptible to damage. The lack of clearance could result in cracked/broken quarter fenders… - 21 KWF Aug 6, 2021 · Service Bulletin/Repair Instructions
Safety Recall - Model year 2021 Cummins PX9 fuel hose assemblies may leak from the hoses between the fuel pump and the remote filter head. A fuel leak in the presence of an ignition source may increase the risk of a fire. A repair is now available. - 21KWC Jun 22, 2021 · Service Bulletin/Repair Instructions
Safety Recall – Cummins Fuel Rail Leak – NHTSA ID: 21V391 / TC: 2021-323, Cummins Recall: C2423. Cummins PX9 and ISX12 fuel rails may leak around a sealing washer, potentially resulting in fuel leaks. Undetected prolonged diesel fuel spray in the presence o…
Source: NHTSA manufacturer communications files.