# Service bulletin KC\-274

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: 10189802
- Published by NHTSA: 2021\-04\-05
- Manufacturer's number: KC\-274
- Manufacturer's date: 2021\-03\-01
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Mack Chassis \- Vehicles Equipped With A Vertical Selective Catalytic Reduction \(SCR\) System \- Diagnostic Trouble Codes \( DTC \) P1031 With Possible P24DA Lighting The Malfunction Indicator Lamp \( MIL \) \- US17\+OBD16 \(GHG17, Common Rail Fuel System\)

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189802-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10189802-9999.pdf)

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

## Components

Engine

## Trouble codes named

P1031, P24DA

## Vehicles listed

- MACK MACK

JSON: [/v1/bulletins/10189802](/v1/bulletins/10189802)

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