# Service bulletin KC\-456

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: 10207662
- Published by NHTSA: 2022\-02\-06
- Manufacturer's number: KC\-456
- Manufacturer's date: 2022\-01\-21
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Exhaust Gas Recirculation \(EGR\) System \- Fault Codes SPN 412 FMI 0,2,5; Diagnostic Trouble Codes \(DTC\) P040A, P040B, P1121 \- Temperature Sensor Inspection

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207662-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207662-9999.pdf)

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

## Components

Engine

## Trouble codes named

P040A, P040B, P1121

## Vehicles listed

- MACK MACK

JSON: [/v1/bulletins/10207662](/v1/bulletins/10207662)

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