# Service bulletin E232

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: 10136223
- Published by NHTSA: 2018\-05\-07
- Manufacturer's number: E232
- Manufacturer's date: 2018\-03\-01
- NHTSA component: ENGINE; ELECTRICAL SYSTEM:SOFTWARE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

## NHTSA's summary

Non Safety Campaign \-Software update for PACCAR MX\-13/MX\-11 MY2017 Engines to correct the detection of reduced SCR \(selective catalytic reduction\) performance, which may result in an increase in tailpipe emissions. Update the engine software to RC5 or higher to resolve the issue.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10136223-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10136223-0001.pdf)

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

## Components

Electrical system, Engine, Exhaust and emissions, Exhaust manifold, pipes and muffler, Software

## Vehicles listed

- PACCAR PACCAR

JSON: [/v1/bulletins/10136223](/v1/bulletins/10136223)

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