# Service bulletin KC\-2126

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: 10199697
- Published by NHTSA: 2021\-08\-02
- Manufacturer's number: KC\-2126
- Manufacturer's date: 2021\-07\-19
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Turbo\-Compound Engines \- P049D00 EGR Valve Exceeded Learning Limit \- US21\+OBD20 And US21\+OBD21 Emissions

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199697-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10199697-9999.pdf)

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

## Components

Engine

## Trouble codes named

P049D

## Vehicles listed

- MACK ASET

JSON: [/v1/bulletins/10199697](/v1/bulletins/10199697)

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