# Service bulletin TSB210054\-110820

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: 10204431
- Published by NHTSA: 2021\-12\-13
- Manufacturer's number: TSB210054\-110820
- Manufacturer's date: 2021\-11\-08
- NHTSA component: ENGINE

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of false occurrences of Fault Code 555 or 556 when the Fault Code 555 or 556 is active or has more than one inactive count within the last 25 engine operating hours due to an incorrect calibration code. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204431-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10204431-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS X15

JSON: [/v1/bulletins/10204431](/v1/bulletins/10204431)

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