# Service bulletin TSB170120\-112020

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: 10127391
- Published by NHTSA: 2018\-01\-29
- Manufacturer's number: TSB170120\-112020
- Manufacturer's date: 2017\-11\-28
- NHTSA component: FUEL SYSTEM, DIESEL; ENGINE

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of Aftertreatment Diesel Particulate Filter \(DPF\) soot load and regeneration fault codes on International IC Buses. The air cleaner accordion boot seal does not seal properly when hood is closed and lead to to hot engine compartment air entering intake air stream and cause engine to not meet required performance targets.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127391-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10127391-0001.pdf)

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

## Components

Engine, Fuel system

## Vehicles listed

- CUMMINS B6.7
- CUMMINS ISB6.7

JSON: [/v1/bulletins/10127391](/v1/bulletins/10127391)

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