WenmarOpen by Wenmar Pro

Service bulletin K54101221

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 id10145540
Published by NHTSA2018-10-15
Manufacturer's numberK54101221
Manufacturer's date2018-09-25
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; POWER TRAIN; EQUIPMENT

NHTSA's summary

** Tech Tip ** TT - 001 - 2015 - How And When To Diagnose A P0402 Code

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, Transmission and driveline

Trouble codes named

P0402

Vehicles listed
MACK CHU
MACK CXU
MACK GU
MACK LEU2007 to 2017
MACK LR
MACK MRU2007 to 2018
MACK TD

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