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Manufacturer recall number

Kenworth recall 23KWJ, 23PBJ

Kenworth calls it 23KWJ, 23PBJ. NHTSA filed it as campaign 23V661000 on Sep 29, 2023: service brakes, air on the 2020–2024 Kenworth and Peterbilt, 254 vehicles potentially affected. One recall, two numbers — the dealer quotes the manufacturer’s, the federal record carries NHTSA’s.

What NHTSA has under this number

Source: 49 CFR Part 573 filings
NHTSA campaignVehiclesComponentFiledAffectedSeverity
23V6610002020–2024 Kenworth and PeterbiltService Brakes, AirSep 29, 2023254high
Problem PACCAR Incorporated (PACCAR) is recalling certain 2021-2024 Kenworth T280, T380, 2020-2024 Peterbilt 548, 536, 2024 Peterbilt 537, and 2020-2024 Kenworth T480 trucks. The timing of the trailer brake release may be delayed. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems." Risk A delay in the trailer brake release can create instability to the trailer and increase the risk of a crash. Fix Dealers will replace the fittings and hoses in the affected valves, free of charge. Owner letters were mailed January 15, 2024. 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 23KWJ and 23PBJ.

The manufacturer’s own words as filed for 23V661000. Every model year it covers, the build window and the filed PDFs →

Two numbers, one recall

Every safety recall carries two identifiers. 23KWJ, 23PBJ is the number Kenworth assigned in its own system: it is what appears on the owner letter, on the dealer’s service screen and on the repair order. 23V661000 is the number NHTSA filed the same recall under when the manufacturer reported it, and it is the one every federal record, this site included, is keyed on.

The repair is free by federal law for vehicles up to fifteen years old. Whether one particular vehicle is included is settled by its VIN against the manufacturer’s build list, not by its model year.

Check one specific vehicle

Both lookups check a VIN against the manufacturer’s own list and say whether the repair is still outstanding on that vehicle.

Common questions

Source: NHTSA, 49 CFR Part 573

Is 23KWJ, 23PBJ the same recall as 23V661000?

Yes. 23KWJ, 23PBJ is Kenworth’s own number for it; 23V661000 is NHTSA’s. One recall, two references.

Which vehicles does 23KWJ, 23PBJ cover?

2020–2024 Kenworth and Peterbilt, 254 vehicles by the manufacturer’s count. A recall covers a build range, so the VIN decides whether one particular vehicle is in it.

Does the 23KWJ, 23PBJ repair cost anything?

No. The manufacturer must remedy a safety defect at no charge for vehicles up to 15 years old from first sale.