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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10110797
Published by NHTSA2017-08-07
Manufacturer's numberE178
Manufacturer's date2017-04-13
NHTSA componentENGINE 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

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions

Trouble codes named

P1490

Vehicles listed
PACCAR MX-132013 to 2016

Listing a model year does not mean every vehicle of it is concerned: the document says which.