# Service bulletin TSB230012

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: 10231923
- Published by NHTSA: 2023\-02\-21
- Manufacturer's number: TSB230012
- Manufacturer's date: 2023\-01\-24
- NHTSA component: BACK OVER PREVENTION

## NHTSA's summary

This technical service bulletin was issued for Symptom: ?Cycle the key switch? message appears immediately, and test will not display any results when technician performs Aftertreatment Intake NOx Sensor Test or Aftertreatment Outlet NOx Sensor Test. Fault Codes: 1885;1887;3583;3649;3748;3749;5655;6459;6463 Root Cause: ECM calibration code issue Verification: Compare the ECM code and revision number in the ECM to the calibration revision listed in the ECM calibration revision history for applicable changes. Resolution: If an ECM calibration code update for improvement to NOx Sensor Service Test, the ECM calibration revision must be that revision or higher.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231923-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10231923-9999.pdf)

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

## Components

Driver assistance, Backup camera

## Vehicles listed

- CUMMINS B

JSON: [/v1/bulletins/10231923](/v1/bulletins/10231923)

[Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20TSB230012&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10231923&vehicle=Service%20bulletin%20TSB230012)