# Service bulletin 18521

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: 10154774
- Published by NHTSA: 2019\-03\-18
- Manufacturer's number: 18521
- Manufacturer's date: 2019\-02\-06
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## NHTSA's summary

Engine software On Board Diagnostic \(OBD\) issues will be corrected which will aid in engine malfunction identification and proper diagnosis. In addition, Diesel Exhaust Fluid \(DEF\) quality sensor monitors will be corrected to proper operating function.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154774-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2019/MC-10154774-9999.pdf)

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

## Components

Engine, Exhaust and emissions

## Vehicles listed

- 2016 to 2018 INTERNATIONAL HX
- 2016 to 2018 INTERNATIONAL PAYSTAR
- 2016 to 2018 INTERNATIONAL PROSTAR
- 2016 to 2018 INTERNATIONAL WORKSTAR

JSON: [/v1/bulletins/10154774](/v1/bulletins/10154774)

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