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Service bulletin TSB200116-030220

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 id10190752
Published by NHTSA2021-04-26
Manufacturer's numberTSB200116-030220
Manufacturer's date2021-03-02
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of units experiencing fault codes while operating at lower ambient air temperatures 0°C [ 32°F ]. This is an update to a previously submitted communication.

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

Electrical system

Vehicles listed
CUMMINS B6.7
CUMMINS L9

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