# Service bulletin E178

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: 10110797
- Published by NHTSA: 2017\-08\-07
- Manufacturer's number: E178
- Manufacturer's date: 2017\-04\-13
- NHTSA component: ENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

## NHTSA's summary

Fix\-As\-Fail \- On the MX\-13 EPA13 engine, water may buildup and freeze on the EGR Pressure Difference Sensor \(F751\), causing a P1490 \(EGR \- Valve Stuck in open position fault\) and resulting in a stop engine lamp.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110797-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10110797-0001.pdf)

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

## Components

Engine, Exhaust and emissions

## Trouble codes named

P1490

## Vehicles listed

- 2013 to 2016 PACCAR MX\-13

JSON: [/v1/bulletins/10110797](/v1/bulletins/10110797)

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