# Service bulletin TSB101120\-043020

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: 10193399
- Published by NHTSA: 2021\-05\-17
- Manufacturer's number: TSB101120\-043020
- Manufacturer's date: 2021\-04\-30
- NHTSA component: EQUIPMENT

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of engine surge, usually with high counts of Fault Codes 1861, 2776 and/or 3847. The cause is found to be contamination of the air/fuel mixer and partial or complete blockage of the mixer's fuel ports. 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-10193399-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10193399-9999.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- CUMMINS ISB5.9 G
- CUMMINS WESTPORT ISL G
- CUMMINS WESTPORT ISX12 G

JSON: [/v1/bulletins/10193399](/v1/bulletins/10193399)

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