2017 Kenworth T800: common problems
The maker issued 30 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 30
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine and cooling | 0 | 0 | 8 |
| Electrical system | 0 | 0 | 6 |
| Engine | 0 | 0 | 5 |
| Equipment | 0 | 0 | 3 |
| Fuel system | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Wheels | 0 | 0 | 2 |
| Powertrain | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Vehicle speed control | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
| Other | 0 | 0 | 2 |
Comparison
What to check before buying
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- "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…
- The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to…
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
- The attached procedures document has been updated with more detail and explanations
This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
- Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values
- CARB Chassis Update - Chassis list updated with 5 KW and 31 PB additional chassis
- Procedure pictures updated for clarity
When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process but…
- Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air…
Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 âÂÂAir Brake SystemsâÂÂ. This bulletin will be updated when repair…
- Emissions Recall Certain Vehicle Model Year 2017-2019 chassis equipped with EPA2017 compliant PACCAR MX-13…
Emissions Recall Certain Vehicle Model Year 2017-2019 chassis equipped with EPA2017 compliant PACCAR MX-13 engines have an EGR flex pipe that can develop cracks and leak untreated exhaust. The EGR Flex pipe will be…
- Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins…
Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins ISX12/ISX15/X15 engines that had a previously failed DEF sensor and with DEF sensor software disabled due to industry DEF…
- E279
PACCAR MX-13/MX-11 Engine MY17 Software Incorrectly Sets DTC P1092 PACCAR MX-13/MX-11 Engine MY17 Software Incorrectly Sets DTC P1092 Emission Recall - PACCAR MX-13/MX-11 MY2017 software incorrectly sets DTC P1092…
- Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis…
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…
- Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid…
Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
NHTSA lists 30 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2017 Kenworth T800?
There are no owner complaints in the NHTSA data for this year; the data comes from 30 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2017 Kenworth T800?
NHTSA lists 30 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2017 Kenworth T800 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2017 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.