Kenworth service campaign P001
Kenworth filed this with NHTSA as a service campaign dated Aug 27, 2026, received Jul 2, 2026, about the engine — 4 documents under this number. It names 6 model years (2025–2026). A service campaign is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication"KW: The chassis list has been updated to include 1 chassis. The total chassis count is now 53. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to include 8 chassis. The total chassis count is now 130. A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section."
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| P001 | Service bulletin | Aug 27, 2026 | 11036426 | PDF, 210 KB |
| P001 | Service bulletin | Aug 19, 2026 | 11036339 | PDF, 209 KB |
| P001 | Service bulletin | Aug 13, 2026 | 11036297 | PDF, 206 KB |
| P001 | Service campaign | Jun 30, 2026 | 11034397 | PDF, 203 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themAlso filed against: 2025 Kenworth T680; 2026 Kenworth T680; 2025 Kenworth T880; 2026 Kenworth T880; 2025 Kenworth W990; 2026 Kenworth W990.
None of these model years has a page on this site (it covers EPA-certified cars, trucks and SUVs from 2016), so the bulletin is listed here on its own.
Common questions
Source: NHTSA, 49 CFR 579.5Is Kenworth P001 a recall?
No. A service campaign is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls.
Is the P001 repair free?
A service campaign is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does P001 cover?
The manufacturer filed it against 6 model years: 2025 Kenworth T680, 2026 Kenworth T680, 2025 Kenworth T880, 2026 Kenworth T880, 2025 Kenworth W990, 2026 Kenworth W990. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.