WenmarOpen by Wenmar Pro

Service bulletin TSB260076

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 id11034582
Published by NHTSA2026-07-07
Manufacturer's numberTSB260076
Manufacturer's date2026-06-09
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution steps for pack management unit contactor low-voltage wiring harness of the battery electric system which may be damaged, resulting in fault codes 54, 55, 12144 or 12146 being set.

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

Fuel system

Vehicles listed
CUMMINS BES

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