# Service bulletin 43\-069

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10200929
- Published by NHTSA: 2021\-09\-03
- Manufacturer's number: 43\-069
- Manufacturer's date: 2021\-08\-17
- NHTSA component: EQUIPMENT; ELECTRICAL SYSTEM

## NHTSA's summary

A DPF regeneration two\-position switch parameter is causing inhibited DPF regeneration. A parameter update, via Cummins Insite, restores proper DPF regeneration function.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200929-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10200929-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system, Equipment and accessories

## Vehicles listed

- 2021 KENWORTH T280
- 2021 KENWORTH T380
- 2021 KENWORTH T480
- 2021 KENWORTH T680
- 2021 KENWORTH T880

## Recalls for the same vehicles and component

- [25V181000](/recalls/nhtsa/25V181000.md), 2025-03-24: ELECTRICAL SYSTEM:PROPULSION SYSTEM
- [24V915000](/recalls/nhtsa/24V915000.md), 2024-12-09: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [21V00N000](/recalls/nhtsa/21V00N000.md), 2021-12-29: ELECTRICAL SYSTEM:WIRING
- [21V906000](/recalls/nhtsa/21V906000.md), 2021-11-19: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, AIR

## Other bulletins for the same vehicles and component

- [32\-014](/bulletins/11037549.md), 2026-09-29, Service bulletin: ELECTRICAL SYSTEM. This bulletin, the troubleshooting procedure, and the BMS Troubleshooting Checklist have been updated to show that the Autometer tool test results can be used in place of the Midtronics tool test results for fulfilling service and warranty requirements.
- [43\-080](/bulletins/11033918.md), 2026-06-17, Service bulletin: ELECTRICAL SYSTEM. "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 boxes for clear instructions."
- [02\-177](/bulletins/11033351.md), 2026-06-03, Service bulletin: ELECTRICAL SYSTEM. Troubleshooting procedures for 2.1m cab power windows are now available.
- [E326](/bulletins/11032284.md), 2026-05-06, Emissions: ENGINE; ELECTRICAL SYSTEM. EPA17\-24 MX Fuel Injector Connector \- This bulletin has been revised to include all EPA17\-24 and CARB24 PACCAR MX engines.
- [24PBE\_KWE](/bulletins/11029738.md), 2026-03-05, Service bulletin: ELECTRICAL SYSTEM. The Parts section has been updated to clarify that freight charges for safety recall orders should not be passed on to the end customer.
- [24KWE / 24PBE](/bulletins/11028318.md), 2026-02-05, Service bulletin: ELECTRICAL SYSTEM. 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, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [24PBE\_24KWE](/bulletins/11028308.md), 2026-02-05, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. 24PBE\_24KWE RH Shift Stalk Update Warranty section has been updated with revised verbiage for picture requirements.
- [24PBE/KWE](/bulletins/11027063.md), 2026-01-06, Warranty extension: POWER TRAIN; ELECTRICAL SYSTEM. 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, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [24KWE](/bulletins/11026414.md), 2025-12-05, Service campaign: ELECTRICAL SYSTEM; POWER TRAIN. 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, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “\!” next to DNR/DNRP indicator, “\-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
- [25KWC](/bulletins/11017901.md), 2025-05-06, Service bulletin: ELECTRICAL SYSTEM. Safety Recall – Interim Notification Certain Kenworth T680E Battery Electric Vehicle \(BEV\) chassis equipped with certain Accelera High VoltageInterlock Loop \(HVIL\) circuit configurations may experience a sudden loss of high voltage power with unintended opening of electrical contractors, which may occur without warning. This can result in a loss of propulsion and may increase the risk of a crash. This bulletin will be updated when parts and procedures are available.

JSON: [/v1/bulletins/10200929](/v1/bulletins/10200929)

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