Complaints over time
Complaints about the 2021 Peterbilt 389 peaked in 2025, with 1 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model year
2021 Peterbilt 389
Heavy truck, diesel, 6x4, built in United States. Owner complaints on file from Nov 12, 2025 to Nov 12, 2025.
Recall campaigns covering this model year6294k vehicles or units across those campaigns
Owner complaints1Close to the median 2021 heavy truck
Severity index0.02021 heavy trucks average 14.3
First 24 months0Complaints in its first two years
Components
100% of complaints about the 2021 Peterbilt 389 name electrical system
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
6 recall campaigns cover the 2021 Peterbilt 389
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 24V-915 | Dec 9, 2024 | Electrical noise and low signal to the power line carrier may cause the ECU to incorrectly process commands or stop functioning | Electrical system | 220,764 | Software update |
| 24V-190 | Mar 20, 2024 | Right-hand gear shifter stalk connectors may have been improperly crimped, resulting in a loss of communication | Powertrain | 70,509 | Part replacement |
| 21V-906 | Nov 19, 2021 | Work brake (winch brake) may unintentionally disengage the service brakes during winching operations, causing the vehicle to roll | Electrical system | 908 | Software update |
| 21V-648 | Aug 19, 2021 | Cross member mounted Hill Start Assist valve assembly may have insufficient clearance to the rear axle, causing damage to the rear brake hose and… | Brakes | 163 | Inspection |
| 21V-080 | Feb 17, 2021 | Capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach | Engine and cooling | 132 | Repair or modification |
| 20V-506 | Aug 26, 2020 | Axles may have lower rear pivot bolts that are not long enough to sufficiently engage the locking feature of the corresponding nuts | Powertrain | 1,097 | Part replacement |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2021 Peterbilt 389
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Nov 12, 2025Failure Nov 12, 2025671,000 milesLake Wales, FLSpeedometer/odometer
Odometer Fraud. The contact purchased a 2021 Peterbilt 389. The contact stated that while attempting to restart the vehicle after running out of diesel, it was discovered that there was a mileage discrepancy. The contact stated that while restarting the vehicle, the fuel filters needed to be refilled with diesel. The contact stated that whenever a trailer was serviced, the date and mileage were written on the filters. The contact stated that the mileage was significantly higher as written on the filter than what was written on the sales contract and shown on the odometer. The vehicle was a dealer sale. At the time of purchase, the mileage was 411,000, and while refilling the fuel filters, the mileage was 671,000.
NHTSA complaint 11698892
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
73 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.
- P001 Sep 11, 2026 · Service Bulletin/Repair Instructions
"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 chassis list." - E343 Sep 5, 2026 · Service Bulletin/Repair Instructions
An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines. - 24KWL/PBL Aug 13, 2026 · Service Bulletin/Repair Instructions
The verbiage in the Introduction section has been updated. - 43-088 Aug 13, 2026 · Service Bulletin/Repair Instructions
The procedure has been updated to include additional steps for verifying the software level on the vehicle electronic control unit (VECU2) and digital display (DD). Steps have also been added to the PACCAR Common Rail Injection 2 (PCI2) software verification. - E316 Aug 1, 2026 · Service Bulletin/Repair Instructions
235 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. 5 chassis have been added to the chassis list. The total chassis population is now 15,637. - 43-088 Jul 21, 2026 · Service Bulletin/Repair Instructions
This optional software update is now available for chassis equipped with EMY 2021B-2023 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related derate occurs. The software is being off… - E318 Jul 10, 2026 · Service Bulletin/Repair Instructions
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage. The Warranty section has also been updated to include Peterbilt specific SRT codes for filing cross-divi… - E316 Jul 10, 2026 · Service Bulletin/Repair Instructions
The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage. - 43-088 Jul 7, 2026 · Service Bulletin/Repair Instructions
"The software is not yet available. The bulletin will be updated when more information is available." - 43-088 Jun 29, 2026 · Service Bulletin/Repair Instructions
"An optional software update will be available on 07/06/2026 for chassis equipped with EMY 2021B-2023PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service theirtrucks before a DEF-related derate occurs. The software … - CE030 Jun 24, 2026 · Warranty Program/Extension
"KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy." - 43-080 Jun 3, 2026 · Service Bulletin/Repair Instructions
"KW: A new recommended repair has been added to verify the software level and close the campaign in SIR.The repair procedure has been updated with additional note boxes for clear instructions. PB: The repair procedure has been updated with additional note … - R2103 Jun 2, 2026 · Service Bulletin/Repair Instructions
Updated the point of contact for sourcing the MX Engine Overlay Harness Kits. This retrofit should have been completed by 5/15/2022 per the Action section of the bulletin. However, trucks still open in SIR are still eligible for the repairs. - 43-087 May 5, 2026 · Service Bulletin/Repair Instructions
(KW) Certain T680 / T800 / T880 / W900 / W990 have updated GHG labels available for order and installation. - 45-070 Apr 17, 2026 · Service Bulletin/Repair Instructions
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. - E326 Apr 1, 2026 · Emissions
EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines. - E335 Mar 25, 2026 · Emissions
Expiration Date Format Update - Certain EPA21 compliant PACCAR MX-13 engines were built with intake valve springs that could fail. This failure can cause significant damage to the engine. New intake valve springs will be installed. - 24PBE_KWE Feb 11, 2026 · Service Bulletin/Repair Instructions
The Parts section has been updated to clarify that freight charges for safety recall orders should not be passed on to the end customer. - 45-070 Jan 31, 2026 · Service Bulletin/Repair Instructions
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 bu… - 24PBE Nov 26, 2025 · Service Campaign
The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereb… - E311 Aug 20, 2025 · Other
Condition, Chassis Affected, and Warranty sections updated with the following verbiage “E311 must be flagged and open in Service Information Record (SIR) at the time of RO open date to qualify.” Also, “Through Standard Warranty or any applicable active Exte… - E318 Jun 7, 2025 · Service Bulletin/Repair Instructions
Newly designed fuel injectors are available for EPA2021 compliant PACCAR MX-series engines to optimize engine performance. Injectors must be replaced as a full set (6 injectors) and associated software must be updated at the same time. - T016 / 26-040 May 22, 2025 · Service Bulletin/Repair Instructions
T016: Warranty section updated to include 0.5 hours for test drive. Recommended Repair T016C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25-17A for 6.9 hours created to replace all other codes. 26-040: Warra… - 43-080 PB Mar 26, 2025 · Service Campaign
As of 03/25/2025, this campaign has resumed. Software updates are now available to complete this campaign. - E327 Feb 27, 2025 · Emissions
"Vehicles equipped with PACCAR MX engines with Engine Software Version NA202 or NA206 may display a dash STOP lamp incorrectly. PCI-2 software on these chassis must be reverted from NA202 to NA201 (Pack 2 injectors) or from NA206 to NA191 (Pack 1 injectors… - 24PBL Jan 10, 2025 · Service Bulletin/Repair Instructions
Safety Recall Updated software and procedures are now available. Certain Vehicle Model Year 2021-2025 Peterbilt chassis configured for trailer towing require a software update for the Bendix EC80 ABS ECU. Software update procedures for certain Battery-Elect… - 32-025 Nov 22, 2024 · Service Bulletin/Repair Instructions
Info Only Unnecessary starter replacements can result from customer complaints regarding engine starting issues. A new Starter Troubleshooting Guide has been created to provide a comprehensive list of starting system checks, which should reduce unnecessary… - 02-194 Nov 11, 2024 · Service Bulletin/Repair Instructions
Fix-As-Fail The window switch fails prematurely due to excessive amperage flowing through the window switch circuit. A new door harness design has been developed to prevent failures. Fix-As-Fail start date is 11/11/2024. - 7-700 Oct 22, 2024 · Warranty Program/Extension
7/700 Service Agreement - Letter Only. - E290 Sep 24, 2024 · Service Bulletin/Repair Instructions
FIX-AS-FAIL Updated to include EPA2024 compliant engines. Fuel Filters must be changed before first cleaning. EPA2021 injector cleaning is referenced in RMI for certain injector faults. Complete the procedures in E290. Discard any previous versions of E2… - E316 Aug 16, 2024 · Service Bulletin/Repair Instructions
Bulletin updated to include oil pan drain plug in parts list and incorporated QR code to direct dealers to informational resources for new Programmable Torque Tool. - 16-044 Jul 30, 2024 · Service Bulletin/Repair Instructions
Fix As Fail The height control valve (HCV) rod on vehicles with low air leaf suspensions is prone to toggling over center during rough road conditions. With full suspension articulation, HCV bracket flexes and toggles over center the HCV linkage, which res… - E316 May 21, 2024 · Service Campaign
Campaign Certain PACCAR MX-13 engines contain bolts for the main bearing caps which may fail under certain conditions. - 24PBE Mar 25, 2024 · Service Bulletin/Repair Instructions
INTERIM Safety Recall Parts are not currently available for this safety recall. This bulletin will be updated once repair parts are available. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector… - R2105 Feb 14, 2024 · Service Bulletin/Repair Instructions
Peterbilt has determined that certain model year 2021, pre-production chassis are eligible to have specific parts updated to production level. - E273 Nov 2, 2023 · Service Bulletin/Repair Instructions
Fix As Fail Updated: Two part numbers added: 1818119 DPF Delta Pressure Sensors for MX-13-2 EMY18 2200138 DPF Delta Pressure Sensors for MX-13 -2, EMY19 Per Environment and Climate Change Canada (ECCC) regulations and guidance (Canadian Environmental … - E290 Nov 20, 2023 · Service Bulletin/Repair Instructions
Updated procedures and SRT time to include Fuel Filter replacement during cleaning process. Removed in-tank additive references. - E292 PB Oct 2, 2023 · Service Bulletin/Repair Instructions
Campaign Certain EPA2021 chassis equipped with PACCAR MX engines have Selective Catalytic Reduction (SCR) Catalyst contamination that occurred during manufacturing. SCR Catalyst assemblies will be inspected and replaced as necessary. - E306 Oct 18, 2023 · Service Bulletin/Repair Instructions
Incorrect fuel filter drain and replacement procedures on EPA21 MX-11 and MX-13 engines can result in the following: .Debris and contaminants introduced into the high-pressure fuel system. .Denial of warranty claims for injector and/or fuel system faults… - E283 Jun 9, 2023 · Service Bulletin/Repair Instructions
UPDATE - 06-09-2023 - This Campaign is being extended to December 30, 2023. - E300 May 3, 2023 · Service Bulletin/Repair Instructions
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 bulletin for limi… - E290 Apr 3, 2023 · Service Bulletin/Repair Instructions
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. - 03-087(E295) Feb 27, 2023 · Service Bulletin/Repair Instructions
Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until are vised sensor strategy is developed. - 01-082 Nov 18, 2022 · Service Bulletin/Repair Instructions
Certain model 389 chassis are experiencing freezing of the A/C evaporator or frosting of the compressor and suction line. A field resolution is available to solve this issue. - 34-093 Nov 10, 2022 · Service Bulletin/Repair Instructions
34-093 Model 389 78-inch Sleeper 12V Power Port Supplier Change - 23-005 Oct 6, 2022 · Service Bulletin/Repair Instructions
Clutch pedal linkage lubrication service interval information is missing from the Service manual for Model 365, 367, and 389 chassis. - 45-064 Oct 18, 2022 · Service Bulletin/Repair Instructions
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 cs hardware to del… - 14-043 Sep 9, 2022 · Service Bulletin/Repair Instructions
Fix-As-Fail On certain chassis with Low Air Leaf Suspension or Low-Low Air Leaf Suspension, the Height Control Valve (HCV) arm may be rubbing on other components when the bend in the arm is facing outboard. Flipping the bend in the HCV arm inboard prevents … - 13-060 Aug 3, 2022 · Service Bulletin/Repair Instructions
The service information for Bendix Air Dryer maintenance is being updated to include new procedures. - 56-005 Aug 2, 2022 · Service Bulletin/Repair Instructions
During PTO mode, the engine will not ramp up to the set RPM speed. - 02-169 Jun 10, 2022 · Service Bulletin/Repair Instructions
Info Only - Chassis equipped with a flush mounted battery box between the frame rails, and containing 3 batteries, may experience battery movement on the side where the single battery resides. This bulletin contains a procedure to fabricate a bracket to hol… - E294 May 12, 2022 · Service Bulletin/Repair Instructions
Information Only - This bulletin is to provide information about the availability of a fuel filter set for Pre-Production or Validation level chassis. This fuel filter set is available directly from a PACCAR dealership parts department. - E286 Mar 22, 2022 · Service Bulletin/Repair Instructions
Fix-As-Requested - Engine Model Year 2021B and later PACCAR MX-11 & MX-13 Fuel Injector Adjustment During First C Service - TIB 98-020 Mar 18, 2022 · Service Bulletin/Repair Instructions
Information Only – New Level 1 required tools are available to support MY21B MX engines. - 13-057 Mar 3, 2022 · Service Bulletin/Repair Instructions
Fix-As-Fail ⓠA hill start assist (HSA) valve plumbing revision eliminates ice buildup in the HSA valve exhaust in cold weather. - 51-013 Feb 4, 2022 · Service Bulletin/Repair Instructions
Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a primar… - 34-090 Feb 4, 2022 · Service Bulletin/Repair Instructions
A frame mounted left-hand marker light bracket interferes with the rear fuel tank fill location. A redesigned bracket can be purchased that relocates the marker bracket to the front fuel tank bracket to eliminate interference. - 21PBM Dec 2, 2021 · Service Bulletin/Repair Instructions
âSafety Recall â“ Work Brake May Unintentionally Disengage â“ NHTSA ID: 21V906, TC: 2021-713. The work brake (also known as winch brake) may unintentionally disengage during winching operations, releasing the service brakes, increasing the risk of crash or … - E280 Dec 2, 2021 · Service Bulletin/Repair Instructions
Non-Safety Campaign: Certain DC tools were incorrectly calibrated. The resulting torque issue could affect the EPA21 MX-11 and MX-13 Oil Pan and/or the Exhaust Manifold. - E282 Dec 17, 2021 · Service Bulletin/Repair Instructions
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.
Source: NHTSA manufacturer communications files.