PACCAR service campaign P001
What it says"KW: The chassis list has been updated to include 1 chassis. NHTSA’s full summary ↓
PACCAR filed this with NHTSA as a service campaign dated Sep 11, 2026, received Jul 2, 2026, about the engine — 7 documents under this number. It names 390 model years across Kenworth and Peterbilt (2016–2027). 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.
One page for every brand it was filed under. Each brand’s bulletins: Kenworth · Peterbilt.
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."
Trouble codes it names: P001A P001B P001C P001D all 4 read from the document itself; NHTSA’s summary names none
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| P001 | Service bulletin | Sep 11, 2026 | 11037541 | PDF, 209 KB |
| P001 | Service bulletin | Sep 3, 2026 | 11037449 | PDF, 210 KB |
| 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 bulletin | Aug 13, 2026 | 11036294 | PDF, 162 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 themKenworth 195 model years
Also filed against: 2016 Kenworth 963; 2016 Kenworth C500; 2017 Kenworth C500; 2018 Kenworth C500; 2019 Kenworth C500; 2020 Kenworth C500; 2021 Kenworth C500; 2022 Kenworth C500; 2023 Kenworth C500; 2024 Kenworth C500; 2025 Kenworth C500; 2025 Kenworth C500 EXP; 2024 Kenworth C500B; 2025 Kenworth C500B; 2016 Kenworth C540; 2016 Kenworth C550; 2016 Kenworth K170; 2016 Kenworth K270; 2017 Kenworth K270; 2018 Kenworth K270; 2019 Kenworth K270; 2020 Kenworth K270; 2021 Kenworth K270; 2022 Kenworth K270; 2023 Kenworth K270; 2024 Kenworth K270; 2025 Kenworth K270; 2026 Kenworth K270; 2016 Kenworth K300; 2016 Kenworth K370; 2017 Kenworth K370; 2018 Kenworth K370; 2022 Kenworth K370; 2023 Kenworth K370; 2024 Kenworth K370; 2025 Kenworth K370; 2026 Kenworth K370; 2024 Kenworth L770; 2025 Kenworth L770; 2026 Kenworth L770; 2016 Kenworth T170; 2017 Kenworth T170; 2018 Kenworth T170; 2019 Kenworth T170; 2020 Kenworth T170; 2021 Kenworth T170; 2022 Kenworth T170; 2023 Kenworth T170; 2021 Kenworth T180; 2022 Kenworth T180; 2023 Kenworth T180; 2024 Kenworth T180; 2025 Kenworth T180; 2016 Kenworth T270; 2017 Kenworth T270; 2018 Kenworth T270; 2019 Kenworth T270; 2020 Kenworth T270; 2021 Kenworth T270; 2022 Kenworth T270 and 135 more.
Peterbilt 195 model years
Also filed against: 2016 Peterbilt 210; 2017 Peterbilt 210; 2018 Peterbilt 210; 2021 Peterbilt 210; 2016 Peterbilt 220; 2017 Peterbilt 220; 2018 Peterbilt 220; 2019 Peterbilt 220; 2020 Peterbilt 220; 2021 Peterbilt 220; 2022 Peterbilt 220; 2023 Peterbilt 220; 2024 Peterbilt 220; 2025 Peterbilt 220; 2026 Peterbilt 220; 2016 Peterbilt 320; 2017 Peterbilt 320; 2018 Peterbilt 320; 2019 Peterbilt 320; 2020 Peterbilt 320; 2021 Peterbilt 320; 2022 Peterbilt 320; 2023 Peterbilt 320; 2016 Peterbilt 325; 2017 Peterbilt 325; 2018 Peterbilt 325; 2019 Peterbilt 325; 2020 Peterbilt 325; 2021 Peterbilt 325; 2022 Peterbilt 325; 2023 Peterbilt 325; 2016 Peterbilt 330; 2017 Peterbilt 330; 2018 Peterbilt 330; 2019 Peterbilt 330; 2020 Peterbilt 330; 2021 Peterbilt 330; 2022 Peterbilt 330; 2023 Peterbilt 330; 2016 Peterbilt 337; 2017 Peterbilt 337; 2018 Peterbilt 337; 2019 Peterbilt 337; 2020 Peterbilt 337; 2021 Peterbilt 337; 2022 Peterbilt 337; 2023 Peterbilt 337; 2021 Peterbilt 340; 2016 Peterbilt 348; 2017 Peterbilt 348; 2018 Peterbilt 348; 2019 Peterbilt 348; 2020 Peterbilt 348; 2021 Peterbilt 348; 2022 Peterbilt 348; 2023 Peterbilt 348; 2024 Peterbilt 348; 2025 Peterbilt 348; 2016 Peterbilt 357; 2021 Peterbilt 357 and 135 more.
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.
More bulletins about the engine
Source: same model, same component group19 other manufacturer communications filed against these PACCAR models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Kenworth list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| E340 | Emissions | Oct 16, 2026 | KW Certain vehicle model year 2026 Kenworth chassis equipped with EMY2025 PACCAR MX engines require an amended engine label. The engine labe… |
| 41-028 | Service campaign | Sep 5, 2026 | The campaign expiration date has been extended from 10/01/2026 to 04/01/2027. |
| P003 | Service campaign | Sep 3, 2026 | "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to incl… |
| P002 | Service campaign | Sep 3, 2026 | "KW: A link to the PACCAR Powertrain Prognostics Webcast has been added in the Links section. PB: The chassis list has been updated to incl… |
| E316 | Service campaign | Aug 1, 2026 | 235 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. 5 chassis have… |
| E335 | Emissions | Jul 18, 2026 | Expiration Date Format Update - Certain EPA21 compliant PACCAR MX-13 engines were built with intake valve springs that could fail. This fail… |
| CE033 | Warranty extension | Jun 25, 2026 | "KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy." |
| CE031 | Warranty extension | Jun 24, 2026 | "KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy." |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Kenworth and Peterbilt, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is PACCAR 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 390 model years across 2 brands (Kenworth and Peterbilt): 2016 Kenworth 963, 2016 Kenworth C500, 2017 Kenworth C500, 2018 Kenworth C500, 2019 Kenworth C500, 2020 Kenworth C500 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.