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Service bulletin TSB260091

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 id11034575
Published by NHTSA2026-07-07
Manufacturer's numberTSB260091
Manufacturer's date2026-06-23
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution steps for the HVIL loop of the battery electric system which may includes a 2A-rated HVIL circuit within the traction inverter, resulting in conditions where if the HVIL loop experiences a short to ground, the traction inverter HVIL circuit will fail first because of the current capacity rating of 2A such that failure can be misinterpreted as an internal traction inverter fault when the actual root cause is external to the traction inverter.

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.