# Service bulletin E271

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: 10198760
- Published by NHTSA: 2021\-07\-06
- Manufacturer's number: E271
- Manufacturer's date: 2021\-06\-08
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198760-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10198760-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2014 to 2018 KENWORTH T680
- 2014 to 2018 KENWORTH T800
- 2014 to 2018 KENWORTH T880
- 2014 to 2018 KENWORTH W900
- 2014 to 2018 PETERBILT 320
- 2014 to 2018 PETERBILT 365
- 2014 to 2018 PETERBILT 367
- 2014 to 2018 PETERBILT 389
- 2014 to 2016 PETERBILT 520
- 2017 to 2018 PETERBILT 520
- 2014 to 2018 PETERBILT 567
- 2014 to 2018 PETERBILT 579
- 2014 to 2018 PETERBILT 587

## Recalls for the same vehicles and component

- [19V282000](/recalls/nhtsa/19V282000.md), 2019-04-09: ENGINE; ELECTRICAL SYSTEM
- [18V657000](/recalls/nhtsa/18V657000.md), 2018-09-21: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [2016289](/recalls/tc/2016289.md), 2016-06-08: Engine
- [15V597000](/recalls/nhtsa/15V597000.md), 2015-09-24: ELECTRICAL SYSTEM:IGNITION:MODULE; ENGINE AND ENGINE COOLING:ENGINE
- [2015418](/recalls/tc/2015418.md), 2015-09-23: Engine
- [15V309000](/recalls/nhtsa/15V309000.md), 2015-05-26: ENGINE AND ENGINE COOLING:ENGINE
- [2015211](/recalls/tc/2015211.md), 2015-05-15: Engine
- [2014046](/recalls/tc/2014046.md), 2014-02-19: Engine
- [14V086000](/recalls/nhtsa/14V086000.md), 2014-02-18: ENGINE AND ENGINE COOLING:ENGINE

## Other bulletins for the same vehicles and component

- [P001](/bulletins/11037541.md), 2026-09-29, Service bulletin: ENGINE. "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](/bulletins/11037451.md), 2026-09-23, Service bulletin: ENGINE. An exhaust manifold slip joint seal kit is now available for EPA 2017\-2024 PACCAR MX\-13 engines.
- [E311](/bulletins/11035343.md), 2026-07-30, Service bulletin: ENGINE. 105 chassis have been removed from the chassis list and unflagged in PRWS due to expiration of applicable warranty coverage. Total chassis population is 732.
- [E311](/bulletins/11035111.md), 2026-07-21, Service bulletin: ENGINE. The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
- [E311](/bulletins/11033916.md), 2026-06-17, Service bulletin: ENGINE. The PACCAR Powertrain Prognostics Webcast video link has been removed. It will be included with updated information at a later date.
- [E311](/bulletins/11033373.md), 2026-06-03, Service bulletin: ENGINE. Kenworth \- The Warranty section has been updated to include Peterbilt\-specific SRT codes for cross\-division repair filing.
- [41\-024](/bulletins/11032876.md), 2026-05-20, Service bulletin: ENGINE. Procedures have been updated to include additional truck models in the service intervals table.
- [45\-070](/bulletins/11032293.md), 2026-05-06, Service bulletin: ENGINE. 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](/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.
- [E326](/bulletins/11030922.md), 2026-04-07, Emissions: ENGINE. EPA17\-24 MX\-13 Fuel Injector Connector \- This bulletin has been revised to include EPA24 PACCAR MX\-13 engines.

JSON: [/v1/bulletins/10198760](/v1/bulletins/10198760)

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