# Service bulletin C2291B

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: 10188834
- Published by NHTSA: 2021\-03\-15
- Manufacturer's number: C2291B
- Manufacturer's date: 2021\-02\-18
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This In\-Shop Campaign is being issued to address high levels of engine out smoke on certain MY16, ISB6.7 CM2350 B101 engines. This In\-Shop Campaign authorizes certified repair locations to remove and clean the EGR Valve and clean the Intake Air Connection Exhaust Gas Entrance Ports, any time the unit is in for maintenance or repairs, with certain restrictions on reimbursement. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188834-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188834-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS ISB6.7

JSON: [/v1/bulletins/10188834](/v1/bulletins/10188834)

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