# Service bulletin TSB150163

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: 10212884
- Published by NHTSA: 2022\-06\-06
- Manufacturer's number: TSB150163
- Manufacturer's date: 2022\-02\-10
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution to fault codes: 146, 151, 1962, 2646, 2963; improper function of the coolant thermostat; excessive coolant temperature; and/or, engine unable to reach operating temperature as caused by a fatigue malfunction caused by internal pressure. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212884-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10212884-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS ISL9
- CUMMINS L9

JSON: [/v1/bulletins/10212884](/v1/bulletins/10212884)

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