# Service bulletin 22502

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: 10237447
- Published by NHTSA: 2023\-06\-06
- Manufacturer's number: 22502
- Manufacturer's date: 2023\-05\-10
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Per agreement with EPA and CARB, Cummins, Inc. provided an emergency calibration for Cummins ISB, B6.7, ISL9, L9, and X15 engines when a DEF Quality Sensor \(DQS\) was not available. This action addressed the Diesel Exhaust Fluid \(DEF\) Quality Sensor failures in the field and the unavailability of parts due to the worldwide chip shortage. This recall is step two of this program designed to revert all affected vehicles back to the certified calibration and to provide them with the latest improved DQS and Coolant Control Valve \(CCV\) designs. Additionally, the emergency calibration and the restoration to the certified calibration with the latest improved DQS and Coolant Control Valve \(CCV\) designs have no effect on vehicle Emissions.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237447-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237447-9999.pdf)

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

## Components

Engine

## Vehicles listed

- 2017 to 2022 IC BUS CE
- 2017 to 2023 IC BUS CESB
- 2017 to 2019 IC BUS HC
- 2019 to 2021 IC BUS RECB
- 2019 to 2022 IC BUS RESB
- 2020 to 2021 IC BUS TC
- 2018 to 2020 INTERNATIONAL 1300FBC
- 2017 INTERNATIONAL 9900I
- 2017 to 2020 INTERNATIONAL DURASTAR
- 2019 to 2022 INTERNATIONAL HV
- 2017 to 2022 INTERNATIONAL HX
- 2017 to 2022 INTERNATIONAL LONESTAR
- 2018 to 2023 INTERNATIONAL LT
- 2019 to 2023 INTERNATIONAL MV
- 2017 INTERNATIONAL PAYSTAR
- 2017 to 2018 INTERNATIONAL PROSTAR
- 2017 to 2020 INTERNATIONAL WORKSTAR

JSON: [/v1/bulletins/10237447](/v1/bulletins/10237447)

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