# Service bulletin T2084D

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: 10170445
- Published by NHTSA: 2020\-01\-21
- Manufacturer's number: T2084D
- Manufacturer's date: 2019\-12\-13
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Temporary Repair Practice authorizes certified repair locations to upfit certain ISB and ISL CM2350 engines with an improved Selective Catalytic Reduction \(SCR\) Catalyst. MY2013 thru MY2014 engines that qualify, a new wiring harness and calibration update is required. The engine must show open for this field action, experience a complaint or symptom in which troubleshooting results in the replacement of the SCR, and the SCR part number must match the Affected Part Number list. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10170445-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10170445-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS ISB
- CUMMINS ISL

JSON: [/v1/bulletins/10170445](/v1/bulletins/10170445)

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