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Service bulletin E254

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 id10169703
Published by NHTSA2020-01-04
Manufacturer's numberE254
Manufacturer's date2019-12-19
NHTSA componentEQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; FUEL SYSTEM, DIESEL

NHTSA's summary

Fix-As-Fail. Vehicle may present with noise emitting from the after-treatment DOC, or with fault codes P3778, P3776, P3807, P3930, P3796, P3936, P3792, P3800, P3799, or P3877.

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

Equipment and accessories, Fuel system

Trouble codes named

P3776, P3778, P3792, P3796, P3799, P3800, P3807, P3877, P3930, P3936

Vehicles listed
PACCAR MX-112017
PACCAR MX-132017

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