# Service bulletin TSB210272\-121020

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: 10206509
- Published by NHTSA: 2022\-01\-18
- Manufacturer's number: TSB210272\-121020
- Manufacturer's date: 2021\-12\-10
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\)

## NHTSA's summary

This Technical Service Bulletin describes the process to re\-enable Fault Code 6637 after an Engine Control Module \(ECM\) Calibration Code Update. This Fault Code was previously disabled.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206509-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10206509-9999.pdf)

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

## Components

Electrical system, Engine, Engine control module

## Vehicles listed

- CUMMINS ISX12

JSON: [/v1/bulletins/10206509](/v1/bulletins/10206509)

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