2021 KENWORTH T800
1 recalls, 0 complaints - 32 TSBs
24V145000 Feb 23, 2024
SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
Defect Description
PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 ve... Read more
Consequence
Insufficient air volume can reduce braking performance and increase the risk of a crash.
Remedy
Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 24KWD.
No complaints found for this vehicle.
Technical Service Bulletins, 2021 KENWORTH T800
32 manufacturer communications from 20 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.
Most Affected Components
| Component | Bulletins |
|---|---|
| 060000 ENGINE AND ENGINE COOLING | 8 |
| 130000 VISIBILITY | 3 |
| 350000 EQUIPMENT | 3 |
| 110000 ELECTRICAL SYSTEM | 2 |
| 220000 SEATS | 2 |
| 356000 EQUIPMENT ADAPTIVE/MOBILITY | 2 |
| 150000 SEAT BELTS | 2 |
| 070000 FUEL SYSTEM, GASOLINE | 2 |
24KWD
Apr 9, 2024
040000 SERVICE BRAKES, 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 ??A?A?Air Brake Systems??A?A?. This bulletin will be updated when repair parts and procedur
23KWK
Mar 1, 2024
350000 EQUIPMENT
Safety Recall Repair parts and procedures are now available. On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In
23KWK
Mar 1, 2024
220000 SEATS
Safety Recall Repair parts and procedures are now available. On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In
23KWK
Mar 1, 2024
150000 SEAT BELTS
Safety Recall Repair parts and procedures are now available. On certain Kenworth model years 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, a spacer was installed on the seatbelt mounting assembly. In
23KWK
Nov 28, 2023
220000 SEATS
Safety Recall Interim Notification On certain Kenworth model year 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, an additional spacer was installed on the seatbelt mounting assembly. In a severe colli
23KWK
Nov 28, 2023
150000 SEAT BELTS
Safety Recall Interim Notification On certain Kenworth model year 2018 through 2024 C500/T660/T800/W900 trucks with Sears Atlas 70 or 80 series seats, an additional spacer was installed on the seatbelt mounting assembly. In a severe colli
E290
Jun 28, 2023
070000 FUEL SYSTEM, GASOLINE
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
E290
Jun 28, 2023
060000 ENGINE AND ENGINE COOLING
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
43-072
Jun 2, 2023
063000 ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
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 sensor shortages will
43-072
Jun 2, 2023
060000 ENGINE AND ENGINE COOLING
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 sensor shortages will
E290
Mar 31, 2023
060000 ENGINE AND ENGINE COOLING
FIX-AS-FAIL Updated procedures and claim filing information. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Refer to E300 for in-tank additive information
E300
Mar 31, 2023
060000 ENGINE AND ENGINE COOLING
PACCAR will reimburse customers for the local purchase of in-tank fuel additive for EPA2021 compliant MX engines. This is a one-time reimbursement. Only customers who have received E290 injector cleaning qualify for this reimbursement. See
E303
Jan 12, 2023
060000 ENGINE AND ENGINE COOLING
This campaign is the final opportunity to replace the oil filter screw cap to reduce occurrences of broken bypass valve tabs. Broken oil valve tabs can cause oil flow obstruction to critical engine parts, resulting in serious engine damage.
45-064
Oct 18, 2022
060000 ENGINE AND ENGINE COOLING
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 c
E296
Aug 3, 2022
060000 ENGINE AND ENGINE COOLING
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.
22KWB
May 10, 2022
010000 STEERING
Safety Recall ??A?A? 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 repai
98-020
Mar 18, 2022
350000 EQUIPMENT
nformation Only a?? New Level 1 required tools are available to support MY21B MX engines.
S006
Jan 10, 2022
130000 VISIBILITY
Non-Safety Campaign a?? Sun Visors are available. Parts will be shipped to dealers.
E282
Dec 17, 2021
060000 ENGINE AND ENGINE COOLING
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
130000 VISIBILITY
Non-Safety Campaign - Convex mirrors are available. Parts will be shipped to dealers.
43-071
Sep 21, 2021
080000 FUEL SYSTEM, DIESEL
Fix-As-Fail a?? 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 veh
02-168
Sep 20, 2021
160000 STRUCTURE
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/broke
21KWC
Jun 22, 2021
070000 FUEL SYSTEM, GASOLINE
Safety Recall a?? Cummins Fuel Rail Leak a?? NHTSA ID: 21V391 / TC: 2021-323, Cummins Recall: C2423.A Cummins PX9 and ISX12 fuel rails may leak around a sealing washer, potentially resulting in fuel leaks.A Undetected prolonged diesel fuel
02-160
Feb 10, 2021
356000 EQUIPMENT ADAPTIVE/MOBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
350000 EQUIPMENT
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
136000 VISIBILITY:WINDSHIELD WIPER/WASHER
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
02-160
Feb 10, 2021
130000 VISIBILITY
Information Only a?? Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
26-037
Dec 18, 2020
118000 ELECTRICAL SYSTEM:SOFTWARE
Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
26-037
Dec 18, 2020
356000 EQUIPMENT ADAPTIVE/MOBILITY
Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
26-037
Dec 18, 2020
100000 POWER TRAIN
Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
32-014
Oct 12, 2020
110000 ELECTRICAL SYSTEM
Fix-As-Fail a?? The Battery Management System (BMS) may report the incorrect battery condition. Additional diagnostics are available to correctly determine and repair the root cause of the issue.
32-015
Jun 8, 2020
110000 ELECTRICAL SYSTEM
Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplet
KENWORTH T800 - All Years Overview
Complete safety history for the KENWORTH T800 across all model years (1987, 2025).
318
Total Recalls
49
Total Complaints
0
Investigations
5
Reported Crashes
7
Reported Fires
0
Reported Deaths
KENWORTH T800 - Year by Year
Compare recalls and complaints across model years. Click any year to see full details.
| Year | Recalls | Complaints | |
|---|---|---|---|
| 2025 | 1 | 0 | View |
| 2024 | 4 | 0 | View |
| 2023 | 1 | 0 | View |
| 2022 | 1 | 0 | View |
| 2021 (current) | 1 | 0 | |
| 2020 | 9 | 0 | View |
| 2019 | 8 | 0 | View |
| 2018 | 11 | 1 | View |
| 2017 | 8 | 0 | View |
| 2016 | 12 | 1 | View |
| 2015 | 12 | 0 | View |
| 2014 | 12 | 0 | View |
| 2013 | 8 | 0 | View |
| 2012 | 10 | 1 | View |
| 2011 | 13 | 1 | View |
| 2010 | 11 | 1 | View |
| 2009 | 19 | 2 | View |
| 2008 | 25 | 2 | View |
| 2007 | 21 | 1 | View |
| 2006 | 13 | 4 | View |
| 2005 | 12 | 6 | View |
| 2004 | 12 | 3 | View |
| 2003 | 7 | 1 | View |
| 2002 | 6 | 0 | View |
| 2001 | 10 | 1 | View |
| 2000 | 10 | 6 | View |
| 1999 | 12 | 4 | View |
| 1998 | 8 | 1 | View |
| 1997 | 9 | 8 | View |
| 1996 | 8 | 1 | View |
| 1995 | 5 | 2 | View |
| 1994 | 3 | 2 | View |
| 1993 | 1 | 0 | View |
| 1992 | 1 | 0 | View |
| 1991 | 4 | 0 | View |
| 1990 | 3 | 0 | View |
| 1989 | 3 | 0 | View |
| 1988 | 2 | 0 | View |
| 1987 | 2 | 0 | View |